AMD Ryzen 7 5800 Complete review with benchmarks
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April 19, 2022
Table of Contents
In today’s article, I am going to review AMD Ryzen 7 5800. I’m going to review its Cinebench R23 (Single-Core) and (Multi-core), Geekbench 5 (Single-Core) and (Multi-Core), Performance, Power Consumption, Integrated GPU, Ram support, and gaming experience.
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AMD Ryzen 7 5800:
|Cinebench R23 (Single-Core)||1566|
|Cinebench R23 (Multi-Core)||13973|
For decent Gaming-Performance, you should make sure you are above 1000 Cinebench R23 Single-Core Points, and this processor just smashed the other processors in the new record-breaking scores of Cinebench R23 Single-Core 1566. In 3D rendering the higher the Multi-Core Score. The better the performance you will see. Anything above 20k+ Multi-Core Points will boost the performance and will render complex scenes in less time. And this processor scores 13973. This will also help in gaming. As most of you will know that the more the single cores scores are the faster will it open and close the applications. The multicore will also help in rendering and in gaming. This processor has the speeds of whapping 4.6GHz and can be overclocked further with precautions.
|Geekbench 5 (Single-Core)||1604|
|Geekbench 5 (Multi-Core)||9141|
Geekbench 5 Test system’s potential for gaming, image processing, and video editing with the Compute Benchmark. This also tests your GPU’s power with support for the CUDA, OpenCL, and Metal APIs. This processor scored the best in the Geekbench 5. This processor also beats some of the latest and most powerful processors with new record-breaking scores of single-core and multi-core performance. The single-core scores are 1604, and the multi-core scores are 9141. As you guys know. The higher the Geekbench 5 score the higher performance of the processor. Geekbench 5 score that is twice as high will mean the processor is twice as powerful. Ranking of single-core processors by Geekbench 5 score performance worldwide 2022. This processor is faster than the Ryzen 5 3600 which is the most valuable CPU at this time.
|Released||January 12, 2021|
AMD Ryzen 7 5800 is a desktop processor produced by AMD. This processor supports the socket AM4 which most important fact of the new AMD Ryzen processors. This processor has 8 cores and 16 threads. The base clock frequency of the AMD Ryzen 7 5800 is 3400 MHz, but with the new Turbo Boost technology, it can go up to 4600MHz. The size of the L3 cache is whopping 32 MB. Unlike intel, this processor doesn’t have also integrated graphics. The instruction set architecture is based on x64 and can support x86. As the x64 will make more bandwidth then this x64 will be the best choice. This processor is based on Zen 3 architecture which is 25% faster and more efficient than the Zen 2 architecture. The model number of this processor is Vermeer.
|Base Frequency||3.4 GHz|
|Turbo Boost Frequency||4.6 GHz|
|Bus frequency||100 MHz|
|L1 Cache||64K (per core)|
|L2 Cache||512K (per core)|
|L3 Cache||32MB (shared)|
This processor has 8 cores and 16 threads with a base clock of 3. 4GHz and, a boost clock of 4.6GHz. The bus frequency is 100MHz. which will help PCI lanes in terms of performance. This processor is also unlocked with a multiplier of 34x. This will help in overclocking this processor with the right amount of power consumption. This processor has the fastest L1, L2, and L3 cache memories. The L1 cache memory is 64K per core which means 8 cores have their own L1 cache memories. The L2 cache memory is also 512KB per core on these 8 cores. The L3 cache memory is also 32MB which is also shared with the system. If you are looking for the best value processor then this AMD Ryzen 7 5800 is the best choice. In terms of gaming, this processor performs very great with good compatibility with the Nvidia GPU’s and with the AMD GPU’s. In terms of video editing and graphics rendering this processor also shows the best performance. Because of its base clock of 3.4GHz and the boost clock of 4.6GHz. This processor can be more powerful if you chose the right motherboard for it. Because this processor can be overclocked. But I would say no to overclocking because 4.6GHz is enough for today’s gaming and editing.
|Fabrication process||7 nm|
This processor is based on 7Nm process fabrication. The TDP shows 65W of power consumption. This processor can also be overclocked. So, you can increase the voltage in the motherboard interface if the motherboard supports the unlocked processors. The most amazing fact about this processor is that the max temperature support of this processor is 90C which is awesome. You can play games as long as you want and this will not affect the speeds or any thermal throttling issues if you have a good CPU cooler or water cooler. Sometimes when this processor takes a bunch of loaded applications then the processor increases the speeds of each core to the needs. This increases power consumption, thus making the CPU hotter. AMD is known for overheating so this will help in the state of the CPU performance and make it cooler.
This processor doesn’t have an integrated GPU. If you don’t have a GPU and you put this processor in a motherboard and you want to check the system performance, then sorry my friend because without a GPU this processor will not give a display.
|Memory Size||128 GB|
|Max. Memory Channels||2|
AMD Ryzen 7 5800 can support the DDR4 Ram with a memory frequency of 3200MHz. The max memory support of this AMD Ryzen 7 5800 is 128GB of ram. The max memory channel support is 2 channels of Ram. The max memory bandwidth is also 47.68 GB/s which is incredibly fast. There is no ECC support on this AMD Ryzen 7 5800.
This processor is a good option for gamers. Considering its capabilities, it performs well in almost any situation like editing, gaming, rendering, streaming, etc. So, if you are looking for a processor under $300 then I highly recommend buying this processor. There are more alternatives to this processor like core i7 12TH Gen and other AMD CPU’s. In this processor, you got 12 cores, 24 threads, and a boost clock of 4.6GHz. This will play every game at high FPS with a good combination of Graphics card and Ram. You will see no issues in the performance unless there is a bottleneck. So, to avoid that, I will make complete another article on the best compatible Ram, storage, and GPU for this processor. Just let me know in the comment.
So, this was my review of the AMD Ryzen 7 5800. If you guys learned something new then make sure to check out my other articles in the review, as well as my YouTube channel.
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AMD Ryzen 7 5800X3D Review: Gaming-First CPU
The Ryzen 7 5800X3D is the first processor to feature AMD’s 3D V-cache technology that was announced last October. AMD promised 3D V-cache would bring a ~15% boost to gaming performance used alongside the Zen 3 architecture thanks to a much larger L3 cache.
Since then, we’ve tested and confirmed that L3 cache heavily influences gaming performance (see our feature «How CPU Cores & Cache Impact Gaming Performance» for details). That article was inspired by endless claims that more cores were the way to go for gamers, despite the fact that games are really bad at using core-heavy processors… and we don’t expect that to change any time soon.
As a quick example, we found many instances where increasing the L3 cache of a 10th-gen Core series processor from 12 to 20 MB – a 67% increase – could boost gaming performance by around 20%, whereas increasing the core count from 6 to 10 cores – also a 67% increase – would only improve performance by 6% or less.
In other words, making the cores faster, rather than adding more of them, is the best way to boost performance in today’s games. Acknowledging this, AMD has opted to supercharge their 8-core, 16-thread Ryzen 7 5800X with 3D V-cache, creating the 5800X3D.
|Ryzen 9 5950X||Ryzen 9 5900X||Ryzen 7 5800X3D||Ryzen 7 5800X||Ryzen 5 5600X|
|Release Date||November 5, 2020||April 20, 2022||November 5, 2020|
|Price $ MSRP||$800||$550||$450||$550|
|Cores / Threads||16/32||12/24||8 / 16||6/12|
|Base Frequency||3.4 GHz||3.7 GHz||3.4 GHz||3.8 GHz||3.7 GHz|
|Turbo Frequency||4.9 GHz||4.8 GHz||4. 5 GHz||4.7 GHz||4.6 GHz|
|L3 Cache||64 MB||64 MB||96 MB||32 MB||32 MB|
|TDP||105 watts||65 watts|
This new CPU sees an incredible 200% increase in L3 cache capacity, going from the standard 32 MB to an impressive 96 MB. This is achieved by stacking a 41mm2 die containing nothing but L3 cache over the Zen 3 core complex die, extending the L3 cache by 64 MB.
AMD claims this boosts performance by 15% on average over the Ryzen 9 5900X, which is no small feat. They also claim the 5800X3D is overall faster than Intel’s i9-12900K while costing significantly less, so that’ll be interesting to look at.
In terms of pricing, the 5800X3D has been set at $450 which is the original price of the standard 5800X, which has now dropped down to around $340. Intel’s Core i9-12900K is around $600, so should the 5800X3D hit the intended MSRP, it’s going to be considerably cheaper than the competition.
Another advantage of the 5800X3D is that it can be dropped into any AM4 motherboard that already supports Ryzen 5000 series processors, meaning inexpensive B450 boards do support this new CPU, though ideally you’d probably want a decent X570 board to justify spending so much on the processor.
It’s worth noting that this is a gaming focused CPU. We’re sure there will be some productivity workloads that can benefit from the extra L3 cache, but AMD has refrained from giving any examples if they exist. Instead, AMD is 100% pushing this as a gaming CPU, and once you see the data it will make sense why there isn’t a «5950X3D.»
Not to worry, we have included some productivity benchmarks in this review as we’re sure many of you want to see how it compares with the 5800X.
Speaking of which, when compared to the 5800X, the new 3D version is clocked slightly lower with a boost frequency of 4.5 GHz, down 200 MHz from the original. Also, while you can overclock the 5800X, you can’t do the same with the 5800X3D as AMD has locked core overclocking for this part, meaning you can only tune the memory.
For testing the Ryzen 7 5800X3D and all Zen 3 CPUs in this review, we’re using the MSI X570S Carbon Max WiFi with the latest BIOS using AGESA version 18.104.22.168b. Then for the Intel 12th-gen processors, MSI’s Z690 Unify was used with the latest BIOS revision. All of this testing is fresh, and the gaming benchmarks have been updated with the GeForce RTX 3090 Ti using the latest graphics drivers.
The default memory configuration was DDR4-3200 CL14 dual-rank, but we’ve also included some configurations using G.Skill’s DDR4-4000 CL16 memory set to 3800 CL16, as the highest FCLK our 5800X3D sample can handle without memory errors is 1900MHz and this is the norm for all quality Zen 3 chips. For Intel processors we’ve also added a DDR5-6400 CL32 memory configuration. Both platforms were tested with ReSizable BAR enabled and Windows 11. Let’s now get into it.
Starting with Cinebench R23, we see that the 5800X3D is actually 7% slower than the 5800X. This of course is due to the fact that it’s clocked lower, operating at an all-core frequency of 4.3 GHz in this test, whereas the 5800X ran at 4.6 GHz. This is to be expected and AMD provided their own Cinebench data which aligned with our findings.
On a side note, some AMD users claim our Cinebench R23 data is off as their Zen 3 CPU scores higher. What you’re seeing here is the stock behavior of each CPU. If your model scores higher, it’s either because the motherboard is auto-overclocking or you have PBO enabled, but by default this is the scores each model should produce.
Interestingly, the single core performance has dropped by 12% according to the Cinebench R23 results when compared to what we see with the 5800X. That’s a large reduction which typically wouldn’t bode well for gaming performance, but we’ll look at that shortly.
The 7-Zip File Manager decompression performance is about the same as what we saw from the 5800X, with no noteworthy changes.
The same is true of the Corona benchmark. We’re looking at a 1 second difference between the 5800X and 5800X3D.
The Adobe Photoshop 2022 benchmark relies heavily on single core performance and here we see a 6% reduction in performance for the 5800X3D when compared to the 5800X. That fat L3 cache clearly isn’t helping for these productivity benchmarks.
The 3800X3D’s code compilation performance was similar to the 5800X. We’re looking at a miniscule 1% difference.
We like to include Factorio in the application benchmarks as we’re not measuring fps, but updates per second. This automated benchmark calculates the time it takes to run 1,000 updates. This is a single-thread test which apparently relies heavily on cache performance.
Case in point, unlike previous application benchmarks, we’re looking at a massive improvement in Factorio with the 5800X3D. Amazingly, the new CPU was 56% faster than the 5800X and that meant it was 26% faster than Intel’s 12900KS using DDR5-6400 memory.
Briefly back to application benchmarks, we have Blender and like all the other applications tested, the 5800X3D is a little slower than the 5800X, lagging behind by a 5% margin.
Time for the gaming tests, and what do we have here… Far Cry 6 has been a poor title for Zen 3’s battle against Alder Lake, but the 5800X3D looks to change all that.
Using the same DDR4-3200 memory as the 5800X, we’re looking at a 44% increase in gaming performance, from 120 fps to 173 fps. That was also a 10% increase over the 12900K when using the same DDR4 memory.
But it gets better for AMD. Even when arming the 12900K with insanely expensive DDR5-6400 CL32 memory, the 5800X3D was faster using DDR4-3200, and faster again with DDR4-3800 memory. Granted, the margin wasn’t huge, but with the fastest stock memory you can get for each part, the 5800X3D was still 6% faster.
Moving on to Horizon Zero Dawn, we’re mostly GPU bound despite testing at 1080p with an RTX 3090 Ti and the second highest quality settings. Truth is, a lot of games are more GPU bound than CPU bound, which is why we include this data.
We’re looking at a 13% increase for the 5800X3D over the 5800X and that places it slightly ahead of the 12900K.
Tom Clancy’s Rainbow Six Extraction is also maxed out with the RTX 3090 Ti at 1080p using the second highest quality preset with these high-end CPUs. There is a little wiggle room as the 5800X3D proves, along with the 12900KS, but we’re talking about a negligible 6% improvement from 311 fps to 329 fps.
The Watch Dogs: Legion performance improvement is mighty impressive. Here the 5800X3D was 33% faster than the 5800X when using the same DDR4-3200 memory.
That also made it 10% faster than the 12900K, again when using the same memory. For maximum performance we paired the 5800X3D with DDR4-3800 memory and this pushed the average frame rate up to 161 fps, just a few frames shy of what the 12900K achieved with DDR5-6400.
The Riftbreaker is a difficult title for AMD, but the 5800X3D does help, boosting performance by 32% over the original 5800X. This is a great result because using the same DDR4 memory the 5800X3D and 12900K are then comparable in terms of performance.
Faster DDR4-3800 memory didn’t help further though and the 12900KS with DDR5-6400 runs away with it, delivering 12% more performance or a whopping 27% more when looking at the 1% lows.
As was the case with Rainbow Six and Horizon Zero Dawn, we appear to be maxing out what the RTX 3090 Ti can do at 1080p in Shadow of the Tomb Raider, with GPU bound limits of around 190 fps.
This still saw a 19% performance increase for the 5800X, and when using the same DDR4-3200 memory the 5800X3D was 4% faster than the 12900K.
Hitman 3 saw a 24% performance improvement from the 5800X to the 5800X3D when comparing the average frame rate and a 40% increase for the 1% lows.
This allowed the 5800X3D to match the 12900K when using the same DDR4-3200 memory, an impressive result. The DDR4-3800 configuration only improved performance by 5%, whereas the 12900K became 22% faster with DDR5-6400 memory.
Cyberpunk 2077 isn’t kind to AMD although over 100 fps is plenty for playing this game, and given it’s not a competitive title you don’t need hundreds of frames per second. The 5800X3D gains are pretty tame compared to other games, just a 15% boost, and DDR4-3800 didn’t help further performance.
Using the same DDR4-3200 memory, the 12900K was up to 16% faster and then up to 32% faster when using ultra expensive DDR5 memory.
Power Consumption and Cooling
Interestingly, even though Blender rendering did not take any advantage of the massive L3 cache, the 5800X3D used less power than the 5800X, reducing total system consumption by 15%. The fact that it’s clocked lower and probably uses higher quality silicon is likely the major contributing factor here.
For cooling we used the Corsair iCUE h250i Elite Capellix 360mm AIO liquid cooler and this saw the 5800X3D hit a peak die temperature of 83C after 30 minutes of stress testing using Cinebench R23. This result was recorded in an enclosed case (Corsair Obsidian 500D) with an ambient room temperature of 21 degrees.
For comparison, under the same test conditions, the original 5800X peaked at 87C, or 4C higher, and this is because it clocks the cores higher.
For comparing power consumption using the RTX 3090 Ti, we’ve gone and tested the 5800X3D and 12900K in three games: Cyberpunk 2077, Far Cry 6 and Hitman 3, all using DDR4-3200 for both CPUs.
In Cyberpunk 2077, the 12900K was faster and in Far Cry 6 the 5800X3D was faster. When it comes to power usage, the 12900K pushed total system usage 12% higher in Cyberpunk 2077, which isn’t bad given it was up to 16% faster.
Then in Far Cry 6, the 12900K was 9% slower which isn’t great given total system power usage was 20% higher. The Hitman 3 data is interesting because both CPUs delivered the same level of performance, but the 12900K pushed total system power usage 9% higher. While not always the fastest gaming CPU, the 5800X3D is the more efficient part.
8 Game Average Performance
To get this review ready in time, we were only able to test 8 games, but we plan on testing a lot more shortly. From this small sample though, we found that the 5800X3D is slightly faster than the 12900K when using the same DDR4 memory.
It’s a small 5% margin, but that did make it 19% faster than the 5900X on average, so AMD’s 15% claim is looking good.
When using premium memory, the 12900K did have the edge, and was 8% faster when comparing 1% low data. That’s still not a massive enough margin to justify the price delta, let alone the DDR5-6400 memory, so we’d say the 5800X3D has done mighty well overall.
What We Learned
We’ve got to say that after seeing just how fast the Core i9-12900K can be when paired with DDR5-6400 memory and the GeForce RTX 3090 Ti, we didn’t think the Ryzen 7 5800X3D was going to stack up all that well, but it’s really impressed us anyway.
We’ve tested a small sample of games so far, just eight, but it was good to see the 5800X3D edging out the 12900K when both were using DDR4 memory. High speed DDR5 does give the Core i9 processor an advantage, but it’s also very expensive, though pricing is tumbling quite quickly.
The DDR5-6400 kit we used, for example, cost $610 in February, then dropped to $530 in March, before sinking to $480 in April where it currently sits. Granted, that means the memory alone still costs more than the 5800X3D, but we’ve seen a 22% slide in DDR5-6400 pricing in just two months.
Then again, we’re talking about two different animals. The Core i9-12900K / DDR5-6400 combo will set you back $1,080, add to that $250 to $300+ on a mid-range Z690 motherboard. Alternatively, the Ryzen 7 5800X3D should cost $450 and DDR4-3800 CL16 memory can be had for as little as $265, making for a $715 combo. A good quality X570S board will set you back $220 — $250, or you could just get a boring old X570 board like the excellent value Asus TUF Gaming X570-Plus WiFi for $160.
All in all, you can purchase the 5800X3D + high-speed DDR4 memory + a quality X570 motherboard for $875. Compare that to the premium Intel package which would set you back $1,330, or about a 50% premium for a few percent more performance on average.
We’re also ignoring the 12900KS in these calculations because at almost $800, that CPU is rather pointless. Very powerful, but ultimately pointless since the 12900K delivers the same level of performance for $170 less. Using the same DDR4-3800 memory, the 12900K platform cost drops to $1,125, but that’s still a ~30% premium for what would now be the inferior performing option.
So as we see it, you either go big with high-speed DDR5 when buying the 12900K or you might as well just opt for the more efficient and easier to cool 5800X3D. Of course, we’d love to compare these two across 30 or more games, and we’re working on that right now to see beyond a shadow of a doubt which is the ultimate CPU for gamers.
In the meantime, we’re extremely impressed with what we’ve seen here, and we simply hope AMD can meet demand. If the 5800X3D turns into another Ryzen 3 3300X situation, gamers won’t be happy.
Stay tuned for a more in-depth gaming only follow up from us shortly.
- AMD Ryzen 7 5800X3D on Amazon
- AMD Ryzen 7 5800X on Amazon
- Intel Core i9-12900K on Amazon
- Intel Core i7-12700K on Amazon
- AMD Ryzen 9 5950X on Amazon
- AMD Ryzen 9 5900X on Amazon
- Nvidia GeForce RTX 3080 on Amazon
AMD Ryzen 7 5800 Processor Review: Specifications, Benchmark Tests
The Ryzen 7 5800 Processor was released by AMD, release date: 12 Jan 2021. The processor is designed for desktop computers and is based on the Zen 3 architecture.
The processor is locked for overclocking . The total number of cores is 8, threads are 16. The maximum clock frequency of the processor is 4.6 GHz. The maximum temperature is 95 °C. Technological process — 7 nm. Cache size: L1 — 512 KB, L2 — 4 MB, L3 — 32 MB.
Supported memory type: DDR4-3200.
Supported socket type: AM4. The maximum number of processors in the configuration is 1. Power consumption (TDP): 65 Watt.
Single thread mark
| 3DMark Fire Strike
|PassMark — Single thread mark||3401|
|PassMark — CPU mark||25916|
|3DMark Fire Strike — Physics Score||7302|
|Architecture name||Zen 3|
|Issue date||12 Jan 2021|
|Place in the ranking||332|
|Support 64 bit|
|Base frequency||3. 4 GHz|
|Level 1 cache||512KB|
|Level 2 cache||4MB|
|Level 3 cache||32MB|
|Maximum core temperature||95°C|
|Maximum frequency||4.6 GHz|
|Number of cores||8|
|Number of threads||16|
|Maximum number of memory channels||2|
|Supported memory types||DDR4-3200|
|Maximum number of processors in configuration||1|
|Power consumption (TDP)||65 Watt|
|Number of USB ports||4. 0|
|Enhanced Virus Protection (EVP)|
|Fused Multiply-Add 3 (FMA3)|
|Intel® Advanced Vector Extensions (AVX)|
|Intel® Advanced Vector Extensions 2 (AVX2)|
|Intel® AES New Instructions|
|AMD Virtualization (AMD-V™)|
AMD Ryzen 7 5800 vs other processors
Ryzen 7 5800
Ryzen 7 5800
Ryzen 5 5600GE
Ryzen 7 5800
Ryzen 5 PRO 5650G
Ryzen 7 5800
Ryzen 7 5700X
Ryzen 7 5800
Ryzen 7 5800
Test and review: AMD Ryzen 7 5800X3D is a great upgrade for socket AM4
A little over a week ago, the first tests of the Ryzen 7 5800X3D, a processor with 3D V-cache cache that is aimed at gamers, appeared on the Web. Meanwhile, the CPU began to appear in European retail. The Ryzen 7 5800X3D has made it to our test lab, so we’re excited to present our own benchmarks. The processor is also interesting in that it is AMD’s latest blow for Socket AM4, since the transition to AM5 should be expected in the second half of the year. The Ryzen 7 5800X3D will defend AMD’s position in the gaming segment until the new Zen 4 models arrive. Interestingly, AMD plans to expand its 3D-V cache strategy with the new generation, although the benefits are not visible in all scenarios.
AMD announced the first Ryzen processors with 3D V-cache back at Computex 2021. But then it was not entirely clear how AMD would use the new technology. The first CPUs were supposed to appear at the end of 2021, but they had to wait until April 20, 2022. On this day, sales of the Ryzen 7 5800X3D, the first CPU with a new cache, started, that is, many months after the official introduction. Such a long wait time led to criticism from gamers and AMD fans, yet the processor arrived quite late. And today it does not look as impressive as at the end of 2021.
For the first generation of Ryzen with 3D V-Cache, AMD opted for processors with only one CCD die, meaning eight cores. On the other hand, they are quite enough for games. Last year, 3D V-cache technology was introduced with a model containing 12 cores on two CCDs. Apparently, problems with the availability of crystals affected, nevertheless, EPYC processors with an increased cache can be sold for much more. In the AMD range, the Ryzen 7 5800X3D processor is positioned as follows.
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|Cores||Base frequency/Boost||L3 cache||TDP||Price|
|Ryzen 9 5900X||12||3. 7 / 4.8 GHz||64 MB||105 W||45.200 ₽|
|Ryzen 7 5800X3D||8||3.4 / 4.5 GHz||96 MB||105 W||EUR 489|
|Ryzen 7 5800X||8||3.8 / 4.7 GHz||32 MB||105 W||32.100 ₽|
Like the regular 5800X, the Ryzen 7 5800X3D has eight Zen 3 cores, but the base frequency and Boost are still lower. The TDP of 105W hasn’t changed, so the additional cache’s power consumption was probably the reason why AMD couldn’t set identical clock speeds. The 32MB of L3 cache in the Ryzen 7 5800X CCD of the Ryzen 7 5800X3D is complemented by 64MB of 3D V-cache, for a total capacity of 96MB. Therefore, the processor has even more L3 cache than a CPU with two CCD crystals (like the same Ryzen 95900X).
Otherwise, no difference. The Ryzen 7 5800X3D works with DDR4 memory in two channels and provides support for PCI Express 4. 0. The only unique advantage of the processor is the additional cache.
AMD has set the price tag at €489, which is significantly higher than the Ryzen 7 5800X and even more expensive than the 12-core model. Of the direct competitors of the Ryzen 7 5800X3D, we can note the Core i7 12700K (test) for 56,000 ₽ and the Core i9-12900K (test) for 71,800 ₽. The Core i9-12900KS processor (test), which has not yet appeared in Russia, costs significantly more. Ultimately, let’s see how the processors show themselves in terms of price / performance ratio.
3D V-Cache in detail
Here we would like to remind once again how the 3D V-Cache technology works. Enclosure technologies became the starting point for the development of a new cache. Whether it’s HBM in the GPU package or the shift to chiplets in the CPU segment, AMD can make a claim in these technologies. On the other hand, AMD is still heavily dependent on partners. It was only in collaboration with partners that AMD was able to develop a product in this form and bring it to market.
3D stacking technology is still the final stage of AMD development. But putting a layer of SRAM on the processor die is only the first step. In the future, we can expect multi-layer SRAM chips, which can significantly increase the cache capacity.
The 3D V-cache is connected to the CCD directly via TSV (through-silicon via), which was made possible thanks to the 3D packaging technology that AMD developed together with TSMC. The CCD, which is manufactured using a 7nm process, is rotated 180° and 95% of the crystal is sawn off. Of the thickness of 400 microns, only 20 microns remain. And just above this thin layer is the 3D V-Cache cache. It is also produced using a 7nm process technology, the crystal area is 41 mm².
The connection between CCD and SRAM is made with copper TSVs. As AMD points out, the adhesion of the TSV copper pads on both sides is sufficient to connect and hold the two dies. The connection bandwidth is more than 2 TB / s. An extra layer called «structural silicon» (D1A and D1B) adds height where the 3D V-Cache doesn’t, so the thickness of the CCD stays the same.
|Process technology||Chip area||Number of transistors|
|CCD||7 nm||80.7 mm²||4.15 billion|
|IOD||12 nm||125 mm²||2.09 billion|
|L3D||7 nm||41 mm²||4.7 billion|
In the table above you can see the number of transistors and area in relation to other chipsets. The CCD with eight Zen 3 cores and 32 MB of L3 cache has an area of 80.7 mm² and 4.15 billion transistors. The IOD adds 125 mm² and 2. 09 billion transistors to the package. IOD and two CCDs can already be called a rather complex structure in Ryzen and without 3D V-cache. If you add the L3D cache, then about half of the 80 mm² CCD die will be covered by the additional cache. You should also add 4.7 billion transistors to the final number. And here it means not only SRAM, but also control logic, power supply and other components.
There are no questions about the structure of the CCD with the L3D cache. But there seems to be a significant difference between diagrams and practical implementation.
According to information materials, it seems that SRAM is located on the CCD just in the center, above the L3 cache area. Layers of «Structural silicone» are added on the left and right to compensate for the difference in thickness. But after the ISSCC 2022 presentation, it became known that there is another layer of Support Silicon above them.