AMD Ryzen 9 7900X vs Ryzen 9 3900X: performance comparison
VS
AMD Ryzen 9 7900X
AMD Ryzen 9 3900X
We compared two 12-core desktop CPUs: the 4.7 GHz AMD Ryzen 9 7900X against the 3.8 GHz Ryzen 9 3900X. On this page, you’ll find out which processor has better performance in benchmarks, games and other useful information.
- Review
- Differences
- Performance
- Specs
- Comments
Review
General overview and comparison of the processors
Single-Core Performance
Performance in single-threaded apps and benchmarks
Ryzen 9 7900X
100
Ryzen 9 3900X
68
Performance
Measure performance when all cores are involved
Ryzen 9 7900X
100
Ryzen 9 3900X
86
Power Efficiency
The efficiency score of electricity consumption
Ryzen 9 7900X
70
Ryzen 9 3900X
58
NanoReview Final Score
Generic CPU rating
Ryzen 9 7900X
96
Ryzen 9 3900X
75
Key Differences
What are the key differences between 3900X and 7900X
Advantages of AMD Ryzen 9 7900X
- Newer — released 3-years and 3-months later
- More modern manufacturing process – 5 versus 7 nanometers
- Newer PCI Express version – 5.
0
- 22% higher Turbo Boost frequency (5.6 GHz vs 4.6 GHz)
- Includes an integrated GPU AMD Radeon Graphics
Advantages of AMD Ryzen 9 3900X
- Consumes up to 38% less energy than the Ryzen 9 7900X – 105 vs 170 Watt
Benchmarks
Comparing the performance of CPUs in benchmarks
Cinebench R23 (Single-Core)
Ryzen 9 7900X
+53%
2026
Ryzen 9 3900X
1321
Cinebench R23 (Multi-Core)
Ryzen 9 7900X
+55%
29091
Ryzen 9 3900X
18710
Passmark CPU (Single-Core)
Ryzen 9 7900X
n/a
Ryzen 9 3900X
2735
Passmark CPU (Multi-Core)
Ryzen 9 7900X
n/a
Ryzen 9 3900X
32996
Geekbench 5 (Single-Core)
Ryzen 9 7900X
n/a
Ryzen 9 3900X
1329
Geekbench 5 (Multi-Core)
Ryzen 9 7900X
n/a
Ryzen 9 3900X
12075
▶️ Submit your Cinebench R23 result
By purchasing through links on this site, we may receive a commission from Amazon.
This does not affect our assessment methodology.
Specifications
Full technical specification of AMD Ryzen 9 7900X and Ryzen 9 3900X
General
| Vendor | AMD | AMD |
| Released | September 29, 2022 | July 7, 2019 |
| Type | Desktop | Desktop |
| instruction set | x86-64 | x86-64 |
| Codename | Raphael | Zen 2 |
| Socket | AM5 | AM4 |
| Integrated GPU | Radeon Graphics | No |
Performance
| Cores | 12 | 12 |
| Threads | 24 | 24 |
| Base Frequency | 4. 7 GHz |
3.8 GHz |
| Turbo Boost Frequency | 5.6 GHz | 4.6 GHz |
| Bus frequency | 100 MHz | 100 MHz |
| Multiplier | 47x | 38x |
| L1 Cache | 64K (per core) | 64K (per core) |
| L2 Cache | 1MB (per core) | 512K (per core) |
| L3 Cache | 64MB (shared) | 64MB (shared) |
| Unlocked Multiplier | Yes | Yes |
| Transistors | 6.57 billions | 3.8 billions |
| Fabrication process | 5 nm | 7 nm |
| TDP | 170 W | 105 W |
| Max. temperature | 95°C | 95°C |
| Integrated Graphics | AMD Radeon Graphics | — |
| GPU Boost Clock | 2200 MHz | — |
Memory support
| Memory types | DDR5-5200 | DDR4-3200 |
| Memory Size | 128 GB | 128 GB |
Max. Memory Channels |
2 | 2 |
| Max. Memory Bandwidth | — | 47.68 GB/s |
| ECC Support | — | Yes |
| Official site | AMD Ryzen 9 7900X official page | AMD Ryzen 9 3900X official page |
| PCI Express Version | 5.0 | 4.0 |
| PCI Express Lanes | 24 | 16 |
Cast your vote
Choose between two processors
Ryzen 9 7900X
17 (53.1%)
Ryzen 9 3900X
15 (46.9%)
Total votes: 32
ompetitors
1.
Ryzen 7 5800X and Ryzen 9 7900X
2.
Ryzen 9 5900X and Ryzen 9 7900X
3.
Core i9 12900K and Ryzen 9 7900X
4.
Core i7 13700K and Ryzen 9 7900X
5.
Ryzen 7 7700X and Ryzen 9 7900X
6.
Ryzen 7 5800X and Ryzen 9 3900X
7.
Ryzen 9 5950X and Ryzen 9 3900X
8.
Core i7 12700K and Ryzen 9 3900X
9.
Ryzen 7 5700X and Ryzen 9 3900X
So which CPU will you choose: AMD Ryzen 9 3900X or Ryzen 9 7900X?
Name
Message
Promotion
AMD Ryzen 9 3900X vs Intel Core i9-7900X
UserBenchmark: AMD Ryzen 9 3900X vs Intel Core i9-7900X
- CPU
- GPU
- SSD
- HDD
- RAM
- USB
BX80673I97900X
100-100000023BOX
VS
YouTube*NEW*
About
Real World Speed
Performance profile from 201,429 user samples
Benchmark your CPU here
19,695 User Benchmarks
Best Bench: 95% Base clock 3.
3 GHz
Worst Bench: 73% Base clock 3.3 GHz, turbo 0.85 GHz (avg)
Poor: 73%
Great: 95%
SPEED RANK: 154th / 1368
|
Gaming 83% Aircraft carrier |
Desktop 84% Aircraft carrier |
Workstation 90% Nuclear submarine |
181,734 User Benchmarks
Best Bench: 97% Base clock 4.4 GHz, turbo 4.35 GHz (avg)
Worst Bench: 80% Base clock 3.8 GHz, turbo 1.35 GHz (avg)
Poor: 80%
Great: 97%
SPEED RANK: 102nd / 1368
|
Gaming 88% Aircraft carrier |
Desktop 89% Aircraft carrier |
Workstation 102% UFO |
| Effective Speed Effective CPU Speed |
82. 9 % |
88.2 % | Slightly faster effective speed. +6% |
| 14 Nov19|PCGamer AMD Ryzen 9 3950X review |
SotTR 2%, ACO 3%, Divis2 2% | 6 % | Hitm2 1%, FarC5 16%, StrangeB 7%, TWarW2 25%, MetroEx 5%, MESoW 6% | |||
| 10 Mar21|HardwareLUXX Processor non grata: Rocket Lake-S… |
11 % | BFV 5%, SotTR 4%, MetroEx 31%, Divis2 4% |
| Memory Avg. Memory Latency |
76.4 Pts | +1% | 76 Pts | |||
| 1-Core Avg.  Single Core Speed
|
125 Pts | 139 Pts | Faster single-core speed. +11% |
|||
| 2-Core Avg. Dual Core Speed |
247 Pts | 275 Pts | Faster dual-core speed. +11% |
|||
| 4-Core Avg. Quad Core Speed |
479 Pts | 537 Pts | Faster quad-core speed. +12% |
|||
| 8-Core Avg. Octa Core Speed |
917 Pts | 1025 Pts | Faster octa-core speed. +12% |
| Memory OC Memory Latency |
88.5 Pts | 88. 8 Pts |
+0% | |||
| 1-Core OC Single Core Speed |
141 Pts | 148 Pts | +5% | |||
| 2-Core OC Dual Core Speed |
281 Pts | 293 Pts | +4% | |||
| 4-Core OC Quad Core Speed |
552 Pts | 580 Pts | Slightly faster OC quad-core speed. +5% |
|||
| 8-Core OC Octa Core Speed |
1073 Pts | 1122 Pts | +5% |
Market Share
Based on 56,304,549 CPUs tested.
See market share leaders
| Market Share Market Share (trailing 30 days) |
0. 04 % |
0.29 % | Hugely higher market share. +625% |
|||
| Value Value For Money |
69.8 % | 83.1 % | Better value. +19% |
|||
| User Rating UBM User Rating |
55 % | 73 % | Much more popular. +33% |
|||
| Price Price (score) |
$520 | $345 | Much cheaper. +34% |
| Age Newest |
64 Months | 39 Months | Much more recent. +39% |
|||
| TDP Thermal Design Power (TDP) |
140 Watts | 105 Watts | More energy efficient. +25% |
|||
| Cores CPU Processing Cores |
10 cores | 12 cores | Higher core count. +20% |
|||
| Threads CPU Processing Threads |
20 threads | 24 threads | Higher thread count. +20% |
|||
| Lithography Manufacturing process |
14 nm | 7 nm | Much newer manufacturing. +50% |
|||
| Base Clock Base Clock Speed |
3.8 GHz | 3.8 GHz | ||||
| Turbo Clock Turbo Clock Speed |
4.3 GHz | 4.6 GHz | Slightly faster turbo frequency. +7% |
|||
| 64-Core OC Multi Core Speed |
1877 Pts | 2218 Pts | Faster OC 64-core speed. +18% |
|||
| 64-Core Avg. Multi Core Speed |
1639 Pts | 2052 Pts | Faster 64-core speed. +25% |
| Series CPU Architecture |
Skylake-X | Zen2 | ||||
| Socket Motherboard Socket |
LGA2066 | AM4 | ||||
| Graphics Integrated Graphics |
None | None |
ADVERTISEMENT
Custom PC Builder (Start a new build)
Build your perfect PC: compare component prices, popularity, speed and value for money.
CHOOSE A COMPONENT:
CPU GPU SSD HDD RAM MBD
Processor Rankings (Price vs Performance)
November 2022 CPU Rankings.
We calculate effective speed which measures real world performance for typical users. Effective speed is adjusted by current prices to yield a value for money rating. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top CPUs. [CPUPro]
ADVERTISEMENT
Group Test Results
- Best user rated — User sentiment trumps benchmarks for this comparison.
- Best value for money — Value for money is based on real world performance.
- Fastest real world speed — Real World Speed measures performance for typical consumers.
How Fast Is Your CPU? (Bench your build)
Size up your PC in less than a minute.
Welcome to our freeware PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best upgrades.
UserBenchmark of the month
Gaming
Desktop
ProGaming
CPUGPUSSDHDDRAMUSB
How it works
- — Download and run UserBenchmark.
- — CPU tests include: integer, floating and string.
- — GPU tests include: six 3D game simulations.
- — Drive tests include: read, write, sustained write and mixed IO.
