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AMD Ryzen 9 3900X vs Intel Core i9-12900K

AMD Ryzen 9 3900X

The AMD Ryzen 9 3900X operates with 12 cores and 24 CPU threads. It run at 4.60 GHz base 4.20 GHz all cores while the TDP is set at 105 W.The processor is attached to the AM4 (LGA 1331) CPU socket. This version includes 64.00 MB of L3 cache on one chip, supports 2 memory channels to support DDR4-3200 RAM and features 4.0 PCIe Gen 20 lanes. Tjunction keeps below 95 °C degrees C. In particular, Matisse (Zen 2) Architecture is enhanced with 7 nm technology and supports AMD-V, SVM. The product was launched on Q3/2019

AMD Ryzen 9 3900X

The Intel Core i9-12900K operates with 16 cores and 24 CPU threads. It run at 3.20 GHz (5.20 GHz) base 2.40 GHz (3.90 GHz) all cores while the TDP is set at 125 W.The processor is attached to the LGA 1700 CPU socket. This version includes 30.00 MB of L3 cache on one chip, supports 2 memory channels to support DDR4-3200DDR5-4800 RAM and features 5.0 PCIe Gen 20 lanes. Tjunction keeps below 100 °C degrees C. In particular, Alder Lake S Architecture is enhanced with 10 nm technology and supports VT-x, VT-x EPT, VT-d. The product was launched on Q4/2021


Compare Detail

3.80 GHz Frequency 3.20 GHz (5.20 GHz)
12 Cores 16
4.60 GHz Turbo (1 Core) 3.20 GHz (5.20 GHz)
4.20 GHz Turbo (All Cores) 2.40 GHz (3.90 GHz)
check Yes Hyperthreading Yes check
check Yes Overclocking Yes check
normal Core Architecture hybrid (big.LITTLE)
no iGPU GPU Intel UHD Graphics 770
No turbo GPU (Turbo) 1.55 GHz
7 nm Technology 10 nm
No turbo GPU (Turbo) 1.55 GHz
DirectX Version 12
Max. displays 3
DDR4-3200 Memory DDR4-3200DDR5-4800
2 Memory channels 2
Max memory
check Yes ECC Yes check
6.00 MB L2 Cache 14.00 MB
64.00 MB L3 Cache 30.00 MB
4.0 PCIe version 5.0
20 PCIe lanes 20
7 nm Technology 10 nm
AM4 (LGA 1331) Socket LGA 1700
105 W TDP 125 W
AMD-V, SVM Virtualization VT-x, VT-x EPT, VT-d
Q3/2019 Release date Q4/2021

Cinebench R23 (Single-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.

AMD Ryzen 9 3900X 1,309 (59%)
59% Complete
Intel Core i9-12900K 2,008 (91%)
91% Complete

Cinebench R23 (Multi-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.

AMD Ryzen 9 3900X 18,169 (28%)
28% Complete
Intel Core i9-12900K 27,478 (42%)
42% Complete

Cinebench R20 (Single-Core)

Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.

AMD Ryzen 9 3900X 509 (57%)
57% Complete
89% Complete

Cinebench R20 (Multi-Core)

Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.

AMD Ryzen 9 3900X 6,958 (27%)
27% Complete
Intel Core i9-12900K 10,517 (42%)
42% Complete

Cinebench R15 (Single-Core)

Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.

AMD Ryzen 9 3900X 222 (65%)
65% Complete
89% Complete

Cinebench R15 (Multi-Core)

Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.

AMD Ryzen 9 3900X 3,173 (30%)
30% Complete
Intel Core i9-12900K 4,116 (39%)
39% Complete

Geekbench 5, 64bit (Single-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.

AMD Ryzen 9 3900X 1,307 (58%)
58% Complete
Intel Core i9-12900K 2,000 (89%)
89% Complete

Geekbench 5, 64bit (Multi-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.

AMD Ryzen 9 3900X 12,458 (25%)
25% Complete
Intel Core i9-12900K 17,600 (35%)
35% Complete

iGPU - FP32 Performance (Single-precision GFLOPS)

The theoretical computing performance of the internal graphics unit of the processor with simple accuracy (32 bit) in GFLOPS. GFLOPS indicates how many billion floating point operations the iGPU can perform per second.

0% Complete
4% Complete

Blender 2.81 (bmw27)

Blender is a free 3D graphics software for rendering (creating) 3D bodies, which can also be textured and animated in the software. The Blender benchmark creates predefined scenes and measures the time (s) required for the entire scene. The shorter the time required, the better. We selected bmw27 as the benchmark scene.

AMD Ryzen 9 3900X 115.91 (6%)
6% Complete
0% Complete

Estimated results for PassMark CPU Mark

Some of the CPUs listed below have been benchmarked by CPU-Comparison. However the majority of CPUs have not been tested and the results have been estimated by a CPU-Comparison’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.

AMD Ryzen 9 3900X 31,952 (30%)
30% Complete
Intel Core i9-12900K 40,907 (38%)
38% Complete

Monero Hashrate kH/s

The crypto currency Monero has been using the RandomX algorithm since November 2019. This PoW (proof of work) algorithm can only efficiently be calculated using a processor (CPU) or a graphics card (GPU). The CryptoNight algorithm was used for Monero until November 2019, but it could be calculated using ASICs. RandomX benefits from a high number of CPU cores, cache and a fast connection of the memory via as many memory channels as possible

15% Complete
0% Complete
Electric Usage Estimate

Electric Usage Estimate

Electric Usage Estimate

Electric Usage Estimate

AMD Ryzen 9 3900X Intel Core i9-12900K
105 W Max TDP 125 W
NA Power consumption per day (kWh) NA
NA Running cost per day NA
NA Power consumption per year (kWh) NA
NA Running cost per year NA

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