AMD Ryzen 9 3900 Review: a Taste of Eco Mode
Tom’s Hardware Verdict
The Ryzen 9 3900 offers incredible performance-per-watt within a friendlier 65W TDP envelope, which equates to less power consumption and lighter cooling requirements.
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We recently took the then-unannounced Ryzen 9 3900 on a record-breaking overclocking spin with liquid nitrogen, but now we have the elusive chip here in our labs for standard performance testing.
AMD’s 12-core 24-thread Ryzen 9 3900 takes the goodness of the impressive Ryzen 9 3900X and shrinks it down from a 105W TDP envelope to 65W. AMD accomplished this feat by trimming the base and boost frequencies, thus squeezing the lion’s share of performance from AMD’s current flagship Ryzen 9 3900X into desktop PCs with smaller form factors that focus on power efficiency.
With AMD’s inaugural Ryzen lineup, the X-branded models served as the faster and more expensive models in the product stack, while less expensive «non-X» models featured the same physical design as the X-branded models but had lower performance at stock settings. That trade-off came with a hefty discount, and enthusiasts soon learned that overclocking unleashed nearly the same performance from non-X chips as the X models. That was a win in the value department, and non-X models quickly became the go-to chip for enthusiasts on a budget.
With the Ryzen 9 3900X, AMD dashed the hopes of enthusiasts and didn’t release a non-X version. It turns out there is a non-X model, but it is headed to OEM and system integrator (SI) builds, meaning you’ll have to buy the chip in pre-built systems.
However, the Ryzen 9 3900 also gives us a taste of what to expect from AMD’s new Eco-Mode feature, which allows you to downshift AMD processors into lower TDP envelopes with a single click in the BIOS or Ryzen Master software.
Ryzen 9 3900 Specifications and Availability
Swipe to scroll horizontally
| Header Cell — Column 0 | SEP (USD) | Cores / Threads | TDP | Base Frequency | Boost Frequency | Total Cache | PCIe 4.0 Lanes (Processor / Chipset) |
|---|---|---|---|---|---|---|---|
| AMD Ryzen 9 3900X | $499 | 12 / 24 | 105W | 3.8 GHz | 4.6 GHz | 70MB | 24 / 16 |
| AMD Ryzen 9 3900 | N/A | 12 / 24 | 65W | 3.1 GHz | 4.3 GHz | 70MB | 24 / 16 |
| AMD Ryzen 9 PRO 3900 | N/A | 12 / 24 | 65W | 3. 1 GHz |
4.3 GHz | 70MB | 24 / 16 |
| Ryzen 7 3700X | $329 | 8 / 6 | 65W | 3.6 GHz | 4.4 GHz | 36MB | 24 / 16 |
| Ryzen 5 3600 | $199 | 6 / 12 | 65W | 3.6 GHz | 4.2 GHz | 35MB | 24 / 16 |
| Ryzen 5 3500X | N/A | 6 / 6 | 65W | 3.6 GHz | 4.1 GHz | 35MB | 24 / 16 |
AMD designed the Ryzen 9 3900 to offer most of the 12-core, 24-threaded horsepower of the impressive Ryzen 9 3900X, but within a much lower 65W TDP range than its 105W sibling.
The 3900’s reduced power consumption manifests as a lower 3.
1 GHz base clock than the 3900X’s 3.8 GHz base frequency. AMD also pared back the boost clock from 4.6 GHz to 4.3 GHz.
AMD tunes its «X» models to the very edge of the frequency/voltage curve to extract the utmost performance from TSMC’s 7nm node, some of which we see with the chips’ relatively lackluster overclockability. The Ryzen 3000 series processors aren’t known for their overclocking headroom, but that’s because AMD pushes the 7nm process near its limits for its retail silicon.
The company has even employed an innovative new binning technique paired with smart engineering to extract the last few percentage points of performance from each core. However, that tuning is designed to satisfy the enthusiast market’s need for speed, and there is a diminishing point of power efficiency returns as AMD climbs the voltage/frequency curve. It’s a simple concept: High-performance chips exchange higher power consumption, and thus thermal output, for higher performance. Dialing back the frequency reduces peak performance, but can offer much better power efficiency while retaining most of the performance.
Aside from those alterations, the Ryzen 9 3900 is physically identical to the 3900X, meaning it features the threaded grunt of the company’s Zen 2 architecture and the fruits of the 7nm process, like lower power consumption and higher performance. It also has the same 64MB of L3 cache, access to 24 lanes of PCIe 4.0, supports overclocking, and comes with and all of the other high-level features of the Ryzen 9 3900X. AMD also recently announced the PRO variant of the 3900, which sports the same specifications but includes a few optimizations for the professional market.
Image 1 of 1
(Image credit: AMD)
During its Ryzen 9 3950X launch, AMD revealed that it is also rolling out a new Eco-Mode feature that allows you to cram an incredible amount of horsepower into a small form factor build, like a Plexbox or DIY NAS. This feature downshifts the processor from its rated TDP to the next lower ‘grade,’ meaning you can drop a 105W processor to 65W, or a 65W processor to 45W. AMD will make this feature available for all Ryzen processors via a motherboard firmware update, after which you can make the adjustments in either the BIOS or Ryzen Master software.
The easy-to-use feature should prove very handy for SFF enthusiasts, though making a few manual adjustments to the power thresholds would provide many of the same benefits.
AMD has only provided comparative data for Eco Mode on the 3950X, but these general trends should apply to all Ryzen models. AMD claims the 65W mode on the 3950X offers 77% of the chip’s full performance in a multi-threaded CineBench workload, but at a 44% power savings that results in a 7C reduction in temperatures.
In effect, this feature gives you the option to create a Ryzen 9 3900 out of your 3900X, affording the same advantages of reduced power consumption and thermal output while retaining the majority of its performance. It also opens the door to pairing the chip with less expensive motherboards without robust power circuitry. You just don’t get the cost savings of buying a non-X model.
Ryzen 9 3900 Boost Testing
Image 1 of 2
(Image credit: Future)(Image credit: Future)
Ryzen 3000 debuted to some criticism due to the chips’ inability to hit the rated boost clock speeds, but AMD said it identified the issue and issued AGESA code updates that motherboard vendors injected into their firmwares, largely rectifying the issue.
We recorded the frequencies of each core during a series of benchmarks (LAME, POV-RAY, Cinebench, PCMark 10, Geekbench, and VRMark) to expose the 3900’s peak frequencies and thermal output. The per-core frequency recordings create almost unintelligible charts, so we only plotted the maximum and minimum frequencies recorded during each 1-second measurement interval. These measurements could come from any one core, but it makes the charts easier to digest. We’ve also plotted chip temperature on the right axis (the dark red line). We used the Corsair h215i AIO cooler for these tests.
The Ryzen 9 3900 officially has a 4.3 GHz boost clock, but we recorded frequent peaks of 4.35 GHz at stock settings. The chip operates between ~35C and ~65C, with most of its time spent around 45C. Meanwhile, the Ryzen 9 3900X hits 4.65 GHz frequently, but also has a temperature range that extends from ~35C to ~80C, highlighting the huge power and thermal savings of stepping down to a lower TDP range with the Ryzen 9 3900.
We designed that series of tests to measure performance in lightly- and multi-threaded tests, but comparisons with extended x265 HandBrake encoding are indicative of a heavier multi-core AVX load. The Ryzen 9 3900 peaked at 69C and spent the majority of its time during the benchmark at ~60C, while the Ryzen 9 3900X peaked at 87C and hovered around 80C. That isn’t a bad trade-off for the 8.75% reduction in performance we measured during the benchmark.
Ryzen 9 3900 Power Consumption
Image 1 of 9
(Image credit: Future)(Image credit: Future)(Image credit: Future)(Image credit: Future)(Image credit: Future)(Image credit: Future)(Image credit: Future)(Image credit: Future)(Image credit: Future)
It’s important to remember that TDP isn’t a one-to-one measure of power consumption. In the simplest terms, this rating quantifies the required performance of the CPU cooler based upon the chips’ thermal dissipation – not power consumption. That means we won’t see the Ryzen 9 3900 operate at 65W of power consumption.
Here we can see the stock 3900 match the 65W 3700X’s power consumption in nearly all of our stress and application tests. That’s notable because we’re looking at a power budget for an eight-core processor against a 12-core, but you’ll notice in our scatter charts that the 3900 is significantly faster than the 3700X during the application benchmarks. It’s also either as fast, or faster, than Intel’s 95W Core i9-9900K in some workloads, but with lower power consumption. That equates to solid power efficiency metrics.
The chip did exhibit some odd behavior when we flipped into the auto-overclocked PBO mode. The overclocked 3900 consumes the same amount of power that it does at stock during our synthetic AVX and non-AVA AIDA64 stress tests, but we see the expected increase in overclocked power consumption when we switch over to actual workloads. That could be an oddity with AMD’s power control algorithms, but it certainly is interesting.
Synthetic stress tests aside, after uncorking the power limits via overclocking, the 3900’s increased power consumption during the application benchmarks largely equates to the consumption of the overclocked 3900X (except for the multi-threaded AVX y-cruncher workload).
As expected, that results in the tuned 3900 delivering roughly the same performance as the 3900X in all of the tests. Oddly, it even offers the same performance in y-cruncher as the 3900X, but consumes 12W less. This could simply boil down to silicon quality.
Overall, these results bode well. The stock Ryzen 9 3900 gives you significantly more performance-per-watt than the eight-core 3700X in these tests, but you gain some thermal headroom compared to the standard Ryzen 9 3900X. That means the chip can slip into smaller form factor PCs with smaller coolers.
That’s promising for switching a Ryzen 9 3900X into Eco Mode. Let’s see what the results look like throughout the rest of our suite of benchmarks.
CONTENT
1: Cramming 12 Cores & 24 Threads into a 65W TDP
2: AMD Ryzen 9 3900 Gaming
3: AMD Ryzen 9 3900 Application Testing
4: Conclusion
MORE: Best CPUs
MORE: Intel & AMD Processor Hierarchy
MORE: All CPUs Content
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Paul Alcorn is the Deputy Managing Editor for Tom’s Hardware US.
He writes news and reviews on CPUs, storage and enterprise hardware.
The Best CPU You CAN’T Buy
As you can probably tell by the title this review is going to be a bit of a tease, and so I’m going to be very Canadian right now and say I’m sorry. The review this review is going to be a tease is because we are gonna be talking about the Ryzen 9 3900, and not the X version or the recently announced XT version. The regular lower power 3900 is a processor that has been flying under the radar since launch for about a year.
That regular this processor is so uncommon is because AMD only made it available on prebuilt systems, or if you’re lucky enough you can find a 3900 floating around on AliExpress or eBay every now and then.
The sample that I have was pulled straight out of the HP Omen 30L, which I did a complete teardown of recently. In fact, if you’re interested in checking that out you can click here. The purpose for this review is that I wanted to find out what the true potential of this processor is when it’s not tied down to a basic HP-designed B450 motherboard.
And you know what? The more we looked at the performance numbers, and especially overclocking, the more I wished AMD would sell it. This is really a wolf in sheep’s clothing, but at the same time I also understand why they don’t want people to get their hands on these CPUs directly from the retail channel.
Specs
From a specs perspective, the 3900 is basically a more efficient 65W version of AMD’s Ryzen 9 3900X. In order to get that lower TDP rating AMD reduced the clock speeds and voltage making it identical to the Ryzen 9 Pro 3900. It still has 12 cores/24 threads, and the same amount of cache as its bigger brother.
But why even create this thing and not sell it to people like you and I? Well basically AMD launched processor so that system builders have a higher-end but power efficient 24-thread processor that they can sell at a premium. If you look at it this CPU consumes less power, which means they don’t have to spend more money on more expensive components to support a 105W 3900X.
I will give you a perfect example, if you look at the HP Omen 30L there is just no way that the cooling solution and the motherboard can support a higher watt TDP for an extended period of time. If they had put a higher spec processor in there, it would have been necessary to add a better motherboard with expanded power delivery and more PCB layers along with a less generic CPU heatsink. Then again, if you look at the Intel systems that HP Omen is offering, they are working with better Z490 motherboards and liquid cooling options. Why they don’t offer those better components on AMD systems is a conversation for another day.
For most people, the thought of sacrificing performance for better efficiency isn’t really appealing. For the small form factor (SFF) crowd though, well this kind of CPU would be absolutely perfect in my opinion. I mean, sure, it’s simply a de-tuned Ryzen 3900X and you can get very similar results by simply undervolting that processor. However, this is a simple drop-in solution that has supposedly been binned for its ability to run at maximum efficiency, while delivering consistent frequencies.
Overclocking
Now don’t think for a second that AMD is using cores that wouldn’t make the cut for a full 3900X’s higher clock speeds, and that’s because at least the sample that we are over here can overclock like crazy. It was just incredible that with a bit of coaxing – 1.35V set in the BIOS plus Load-Line Calibration (LLC) – it didn’t have any problem hitting a stable 4.4GHz on all cores, while being cooled by a Noctua NH-U12S.
Going above that seemed to cause an immediate black screen, so it’s likely we had hit the maximum allowable input power. As you will see later, those speeds delivered some incredible benchmark results.
Power Consumption
Looking at power consumption, it’s really amazing to see what AMD has done with this processor. It needs almost 100W less than the Intel Core i9-10900K, but it has two dozen threads. Another thing I want to mention here is even though the 3900 is rated at 65W, it’s actual power draw is close to 90W. Under heavy multi-core load we saw package power readings around 88W, which is still super efficient, but a lot higher than what is being claimed.
Stock Benchmarks
Speaking of benchmarks, as always we ran our full suite of tests on this processor and it was a lot of fun. We had a lot of fun reviewing the results and comparing it to the rest of our CPU lineup. Now based on paper specs alone you would think that the 3900 would get kicked in the teeth by a 3900X, but that isn’t really the case even though it’s frequencies are between 300MHz and 700MHz lower. In most cases, it loses by at the most 12%, and in many cases the gap is even smaller. There is a reason for that too, even though AMD rates the Ryzen 9 3900 at much lower boosts and base frequencies those are just theoreticals. In real world speeds – in both lightly and heavy multi-threaded workloads – they are actually a lot closer to the 3900X. I have to say this processor is probably the best example of what AMD can do with its current generation architecture. It combines low power consumption with some really impressive benchmark results, but it also shows how much additional power they needed to get the relatively minor performance increase we are seeing with the 3900X and the 3900XT.
Gaming Benchmarks
As for gaming results, this is one area that I was a bit concerned about. It started off really poorly for the 3900 since Call of Duty seems to like higher clock over core counts, but moving on to other games the GPU itself becomes more of a bottleneck. This processor’s frame rates are not 100% aligned with the others, but there is just no way someone staring at the screen would notice a difference here. Even the 1% lows were super similar going from one CPU to the next, with only the i9-10900K offering anything close to a different experience, and even then it wasn’t all that much better.
Overclocking Benchmarks
What about those overclocking results I promised you at the beginning? Well here they are as promised. As you would ecpect, the Ryzen 9 3900 chugging along at a constant 4.4GHz is going to be a dominant beast in pretty much every application, especially the ones that rely on multi-core workloads. On the either hand, if there is a program like Adobe Premiere that relies more heavily on the GPU, increasing CPU frequencies has a pretty minor effect. In gaming though, well let’s just say that the 3900 goes from an okay gaming CPU to one of the best around. That is mostly because running at a constant 4.4GHz adds a bit more than 1GHz to the in-game frequencies I saw during stock speed runs.
Conclusion
So that pretty much wraps up this quick review of a very rare little CPU. Overall, I think that the Ryzen 9 3900 is one of the best processors AMD that has launched in this generation. It’s efficient, it runs cool, and it overclocks really, really well. Also, if you look at these stock clock speeds, you are actually not losing all that much in terms of performance compared to the Ryzen 9 3900X. This is basically the pinnacle of Zen 2, and it just really goes to show what the architecture can do: And it’s amazing.
It’s just too bad that they are only available for OEMs and other system integrators, but I also understand some of the questions that AMD would go through if they made this widely available. I mean would they market this from an efficiency standpoint and sell it for more compared to the 3900X or would they sell it for less targeting lower performance? Those are certainly some things to consider. Honestly, in the retail market, I think this would be a niche CPU without a real home. It would appeal to some small form factor enthusiasts or someone who wants lower power consumption without sacrificing core count. I know one thing for sure, I would totally rock this thing and it’s definitely not going back to that HP Omen 30L. In fact, it’s going onto a very special build coming very soon, so keep an eye out for that.
Buy items in this review from Amazon at the links below:
Ryzen 9 3900XT – https://geni.us/R93900XT
Ryzen 9 3900X – https://geni.us/R93900X
Ryzen 7 3800XT – https://geni.us/R73800XT
Ryzen 7 – 3800X – https://geni.us/R3800X
be quiet! 500DX – https://geni.us/PB500DX
Ryzen 9 3900X [in 15 benchmarks]
AMD
Ryzen 9 3900X
- Interface
- Core frequency
- Video memory size
- Memory type
- Memory frequency
- Maximum resolution
Description
AMD started selling AMD Ryzen 9 3900X on July 7, 2019 at a suggested price of $499. This is a Matisse (Zen 2) architecture desktop processor primarily aimed at home systems. It has 12 cores and 24 threads and is manufactured using 7nm process technology, the maximum frequency is 4600MHz, the multiplier is unlocked.
This is a socket processor in terms of compatibility.
AMD socket AM4
with TDP 125W. It supports memory
DDR4
dual-channel.
It provides good performance in tests at the level of
26.38%
from the leader which is AMD EPYC 9654.
EPYC
9654
Compare
General information
Information about the type (desktop or laptop) and architecture of the Ryzen 9 3900X, as well as the start time and cost at that time.
| Performance ranking | July 7, 2019 (3 years ago) |
||
| Price at the time | $ 499 | Comers $470 (0.9x) | out of 25332 (Xeon Platinum 8276L) |
Price-quality ratio
- 0
- 50
- 100
Features
Ryzen 9 3900X quantitative parameters such as number of cores and threads, clock speeds, manufacturing process, cache size and multiplier lock status. They indirectly speak about the performance of the processor, but for an accurate assessment, you need to consider the results of the tests.
| of 1536 (EPYC Embeded 3401) | |||
| CASH 2nd level | 512K | 64 MB | of 32 (Ryzen Threadripper 1998) |
| Technological process | 7 Nm | of 4 (Ryzen 9 7940HS) 9005 9005 9005 9005 9005 9005 9005 9005 9005 9005 9005 9005 9005 9005 9005 9005
055 |
|
Compatible
Information on Ryzen 9 3900X compatibility with other computer components. Useful, for example, when choosing the configuration of a future computer or to upgrade an existing one.
Please note that the power consumption of some processors can significantly exceed their nominal TDP even without overclocking. Some may even double their claims if the motherboard allows you to adjust the power settings of the processor. 93900X technological solutions and sets of additional instructions. This information is needed if the processor is required to support specific technologies.
| AES-Ni | + | |
| AVX | + |
9002
Technologies supported by Ryzen 9 3900X that accelerate virtual machines are listed.
| AMD-V | + |
Memory support
Types, maximum amount and channels of RAM supported by Ryzen 9 3900X. Higher memory frequency may be supported depending on the motherboard.
| RAM types | DDR4 Dual-channel |
of 5600 (Ryzen — |
Integrated Video Specifications
General parameters of the integrated graphics card in Ryzen 9 3900X.
| GPU | — |
Benchmark tests
These are the results of the Ryzen 9 3900X performance tests in non-gaming benchmarks. The overall score is set from 0 to 100, where 100 corresponds to the fastest processor at the moment.
Overall benchmark performance
This is our overall performance rating. We regularly improve our algorithms, but if you find any inconsistencies, feel free to speak up in the comments section, we usually fix problems quickly.
Ryzen 9 3900X
26.38
- Passmark
- GeekBench 5 Single-Core
- GeekBench 5 Multi-Core
- Cinebench 10 32-bit single-core
- Cinebench 10 32-bit multi-core
- 3DMark06 CPU
- Cinebench 11.5 64-bit multi-core
- Cinebench 15 64-bit multi-core
- Cinebench 15 64-bit single-core
- Cinebench 11.
5 64-bit single-core
- TrueCrypt AES
- x264 encoding pass 2
- x264 encoding pass 1
- WinRAR 4.0
Passmark
Passmark CPU Mark is a widely used benchmark that consists of 8 different tests, including integer and floating point calculations, extended instruction tests, compression, encryption, and game physics calculations. Also includes a separate single-threaded test.
Benchmark coverage: 67%
Ryzen 9 3900X
32738
GeekBench 5 Single-Core
GeekBench 5 Single-Core is a cross-platform application designed as CPU benchmarks that independently recreate certain real world tasks that can accurately measure performance. This version uses only one processor core.
Benchmark coverage: 37%
Ryzen 9 3900X
1276
GeekBench 5 Multi-Core
GeekBench 5 Multi-Core is a cross-platform application designed as CPU benchmarks that independently recreate certain real world tasks that can accurately measure performance. This version uses all available processor cores.
Benchmark coverage: 37%
Ryzen 9 3900X
11666
Cinebench 10 32-bit single-core
Cinebench R10 is a very outdated ray tracing benchmark for processors developed by the authors of Cinema 4D — Maxon. The Single-Core version uses a single CPU thread to render a futuristic motorcycle model.
Benchmark coverage: 20%
Ryzen 9 3900X
6019
Cinebench 10 32-bit multi-core
Cinebench Release 10 Multi Core is a variant of Cinebench R10 that uses all processor threads. The possible number of threads in this version is limited to 16.
Benchmark coverage: 19%
Ryzen 9 3900X
45539
3DMark06 CPU
3DMark06 is an outdated set of benchmarks based on DirectX 9 by Futuremark. Its processor part contains two tests, one of which calculates the pathfinding of game AI, the other emulates game physics using the PhysX package.
Benchmark coverage: 19%
Ryzen 9 3900X
14889
Cinebench 11.5 64-bit multi-core
Cinebench Release 11.5 Multi Core is a variant of Cinebench R11.5 that uses all processor threads. This version supports a maximum of 64 threads.
Benchmark coverage: 17%
Ryzen 9 3900X
34
Cinebench 15 64-bit multi-core
Cinebench Release 15 Multi Core (sometimes referred to as Multi-Thread) is a variant of Cinebench R15 that uses all of the processor threads.
Benchmark coverage: 14%
Ryzen 9 3900X
3049
Cinebench 15 64-bit single-core
Cinebench R15 (Release 15) is a benchmark created by Maxon, the creator of the popular Cinema 4D 3D modeling package. It was superseded by later versions of Cinebench using more modern variants of the Cinema 4D engine. The Single Core version (sometimes referred to as Single-Thread) uses only one CPU thread to render a room full of mirror balls and complexly shaped lights.
Benchmark coverage: 14%
Ryzen 9 3900X
207
Cinebench 11.5 64-bit single-core
Cinebench R11.5 is an old benchmark developed by Maxon. authors of Cinema 4D. It has been superseded by later versions of Cinebench which use more modern variants of the Cinema 4D engine. The Single Core version loads one CPU thread with ray tracing, rendering a glossy room full of crystal spheres and lights.
Benchmark coverage: 14%
Ryzen 9 3900X
2.4
TrueCrypt AES
TrueCrypt is a deprecated program that was widely used to encrypt disk partitions on the fly. It contains several built-in benchmarks, one of which is TrueCrypt AES. It measures the speed of data encryption using the AES algorithm. The result of the test is the encryption speed in gigabytes per second.
Benchmark coverage: 13%
Ryzen 9 3900X
11
x264 encoding pass 2
x264 Pass 2 is a slower MPEG4 x264 video compression benchmark, resulting in a variable bit rate output file. This results in a better quality of the resulting video file, as a higher bit rate is used when it is needed more. The benchmark result is still measured in frames per second.
Benchmark coverage: 12%
Ryzen 9 3900X
147
x264 encoding pass 1
The x264 benchmark uses the MPEG 4 x264 compression method to encode the sample video in HD (720p). Pass 1 is a faster option that produces an output file at a constant bit rate. Its result is measured in frames per second, that is, how many frames of the source video file were encoded in one second on average.
Benchmark coverage: 12%
Ryzen 9 3900X
268
WinRAR 4.0
WinRAR 4.0 is an outdated version of the popular archiver. It contains an internal speed test using maximum compression by the RAR algorithm on large amounts of randomly generated data. Results are measured in kilobytes per second.
Benchmark coverage: 12%
Ryzen 9 3900X
7534
Relative capacity
Overall performance of the Ryzen 9 3900X compared to its closest competitor in desktop processors.
Intel Core i9-10980XE
101.21
Intel Core i5-13600
100.68
AMD Ryzen 9 3900XT
100.27
AMD Ryzen 9 3900X
100
Intel Core i5-13500
98.98
AMD Ryzen Threadripper 2990WX
98.03
Intel Core i9-12900T
96.47
Competitor from Intel
We believe that the nearest equivalent to Ryzen 9 3900X from Intel is Core i5-13600, which is 1% faster on average and higher by 4 positions in our rating.
Core i5
13600
Compare
Here are some of Intel’s closest competitors to the Ryzen 9 3900X:
Intel Core i7-12700KF
105.46
Intel Core i9-10980XE
101. 21
Intel Core i5-13600
100.68
AMD Ryzen 9 3900X
100
Intel Core i5-13500
98.98
Intel Core i9-12900T
96.47
Intel Core i9-12900E
96.29
Other processors
Here we recommend several processors that are more or less similar in performance to the reviewed one.
Ryzen 9
3900XT
Compare
Core i9
10980XE
Compare
Ryzen Threadripper
2990WX
Compare
Core i9
12900T
Compare
Core i9
12900E
Compare
Ryzen 9
PRO 3900
Compare
Best graphics cards for Ryzen 9 3900X
We have 2235 configs based on Ryzen 9 3900X in our database.
According to statistics, these cards are most often used with the Ryzen 9 3900X:
GeForce RTX
3080
6.3%
GeForce RTX
3070
6.3%
GeForce RTX
3090
6%
GeForce RTX
2070 Super
5.1%
GeForce RTX
2080 Super
5%
GeForce RTX
3060
5%
GeForce RTX
2080 Ti
4.7%
GeForce RTX
2060
4%
Radeon RX
5700XT
3. 7%
GeForce RTX
3080 Ti
3.6%
Here are the most powerful graphics cards used with the Ryzen 9 3900X according to user statistics:
GeForce RTX
4090
0.3% (7/2235)
GeForce RTX
4070 Ti
0.09% (2/2235)
GeForce RTX
3090 Ti
1.7% (38/2235)
Radeon RX
6950XT
0.04% (1/2235)
GeForce RTX
3080 Ti
3.6% (81/2235)
GeForce RTX
3090
6% (134/2235)
Radeon RX
6900XT
1. 3% (29/2235)
GeForce RTX
3080 12GB
0.3% (7/2235)
GeForce RTX
3080
6.3% (141/2235)
Radeon RX
6800XT
0.9% (20/2235)
User rating
Here you can see the rating of the processor by users, as well as put your own rating.
Tips and comments
Here you can ask a question about the Ryzen 9 3900X processor, agree or disagree with our judgements, or report errors or inaccuracies on the site.
Please enable JavaScript to view the comments powered by Disqus.
AMD Ryzen 9 3900 Processor Review: Specifications, Benchmark Tests
The Ryzen 9 3900 Processor was released by AMD on 24 Sep 2019. The processor is designed for desktop computers and is based on the Zen 2 architecture.
The processor is unlocked for overclocking. The total number of cores is 12, threads — 24. The maximum clock frequency of the processor is 4300 MHz. The maximum temperature is 95 °C. Technological process — 7 nm. Cache size: L1 — 768 KB, L2 — 6 MB, L3 — 64 MB.
Supported memory type: DDR4-3200. Maximum supported memory size: 128 GB.
Supported socket type: AM4. Power consumption (TDP): 65 Watts.
Benchmarks
| CompuBench 1.5 Desktop Face Detection |
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| CompuBench 1.5 Desktop Ocean Surface Simulation |
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| CompuBench 1.5 Desktop T-Rex |
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| CompuBench 1.5 Desktop Video Composition |
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| CompuBench 1.5 Desktop Bitcoin Mining |
|
|
| Name | Meaning |
|---|---|
| CompuBench 1.5 Desktop — Face Detection | 30.970 mPixels/s |
| CompuBench 1.5 Desktop — Ocean Surface Simulation | 70.972 Frames/s |
| CompuBench 1. |
1.748 Frames/s |
| CompuBench 1.5 Desktop — Video Composition | 4.924 Frames/s |
| CompuBench 1.5 Desktop — Bitcoin Mining | 19.043 mHash/s |
Features
| Architecture name | Zen 2 |
| Production date | 24 Sep 2019 |
| OPN Tray | 100-000000070 |
| Place in the ranking | 748 |
| Applicability | Desktop |
| Support 64 bit | |
| Base frequency | 3100 MHz |
| Level 1 cache | 768KB |
| Level 2 cache | 6MB |
| Level 3 cache | 64MB |
| Process | 7 nm |
| Maximum core temperature | 95 °C |
| Maximum frequency | 4300 MHz |
| Number of cores | 12 |
| Number of threads | 24 |
| Unlocked | |
| Maximum number of memory channels | 2 |
| Maximum memory bandwidth | 47. |