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Intel Core i7-6700K vs AMD Ryzen 9 3900XT

Intel Core i7-6700K

The Intel Core i7-6700K operates with 4 cores and 8 CPU threads. It run at 4.20 GHz base 4.00 GHz all cores while the TDP is set at 91 W.The processor is attached to the LGA 1151 CPU socket. This version includes 8.00 MB of L3 cache on one chip, supports 2 memory channels to support RAM and features 3.0 PCIe Gen 16 lanes. Tjunction keeps below -- degrees C. In particular, Skylake S Architecture is enhanced with 14 nm technology and supports VT-x, VT-x EPT, VT-d. The product was launched on Q3/2015

Intel Core i7-6700K

The AMD Ryzen 9 3900XT operates with 12 cores and 8 CPU threads. It run at 4.70 GHz base 4.60 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 Q2/2020


Compare Detail

4.00 GHz Frequency 4.10 GHz
4 Cores 12
4.20 GHz Turbo (1 Core) 4.70 GHz
4.00 GHz Turbo (All Cores) 4.60 GHz
check Yes Hyperthreading Yes check
check Yes Overclocking Yes check
normal Core Architecture normal
Intel HD Graphics 530 GPU no iGPU
1.15 GHz GPU (Turbo) No turbo
14 nm Technology 7 nm
1.15 GHz GPU (Turbo) No turbo
12 DirectX Version
3 Max. displays
Memory DDR4-3200
2 Memory channels 2
Max memory
uncheck No ECC Yes check
-- L2 Cache --
8.00 MB L3 Cache 64.00 MB
3.0 PCIe version 4.0
16 PCIe lanes 20
14 nm Technology 7 nm
LGA 1151 Socket AM4 (LGA 1331)
91 W TDP 105 W
VT-x, VT-x EPT, VT-d Virtualization AMD-V, SVM
Q3/2015 Release date Q2/2020

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.

Intel Core i7-6700K 1,131 (53%)
53% Complete
AMD Ryzen 9 3900XT 1,362 (62%)
62% 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.

Intel Core i7-6700K 5,641 (8%)
8% Complete
AMD Ryzen 9 3900XT 18,515 (28%)
28% 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.

51% Complete
AMD Ryzen 9 3900XT 547 (61%)
61% 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.

Intel Core i7-6700K 2,060 (8%)
8% Complete
AMD Ryzen 9 3900XT 7,248 (29%)
29% 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.

61% Complete
AMD Ryzen 9 3900XT 227 (66%)
66% 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.

8% Complete
AMD Ryzen 9 3900XT 3,197 (30%)
30% 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.

Intel Core i7-6700K 1,158 (55%)
55% Complete
AMD Ryzen 9 3900XT 1,422 (63%)
63% 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.

Intel Core i7-6700K 4,462 (12%)
12% Complete
AMD Ryzen 9 3900XT 12,978 (26%)
26% 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.

4% Complete
0% 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.

Intel Core i7-6700K 369.33 (18%)
18% Complete
0% Complete

Geekbench 3, 64bit (Single-Core)

Geekbench 3 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.

Intel Core i7-6700K 4,765 (69%)
69% Complete
0% Complete

Geekbench 3, 64bit (Multi-Core)

Geekbench 3 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.

Intel Core i7-6700K 17,031 (18%)
18% Complete
0% Complete

Cinebench R11.5, 64bit (Single-Core)

Cinebench 11.5 is based on the Cinema 4D Suite, a software that is popular to generate forms and other stuff in 3D. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.

Intel Core i7-6700K 2.29 (84%)
84% Complete
0% Complete

Cinebench R11.5, 64bit (Multi-Core)

Cinebench 11.5 is based on the Cinema 4D Suite, a software that is popular to generate forms and other stuff in 3D. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.

Intel Core i7-6700K 9.95 (18%)
18% Complete
0% Complete

Cinebench R11.5, 64bit (iGPU, OpenGL)

Cinebench 11.5 is based on the Cinema 4D Suite, a software that is popular to generate forms and other stuff in 3D. The iGPU test uses the CPU internal graphic unit to execute OpenGL commands.

Intel Core i7-6700K 41.48 (67%)
67% 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.

Intel Core i7-6700K 11,111 (13%)
13% Complete
AMD Ryzen 9 3900XT 32,996 (31%)
31% 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

0% Complete
15% Complete
Electric Usage Estimate

Electric Usage Estimate

Electric Usage Estimate

Electric Usage Estimate

Intel Core i7-6700K AMD Ryzen 9 3900XT
91 W Max TDP 105 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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