Intel Core i9-11900K vs AMD Ryzen Threadripper PRO 3955WX

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CPU comparison with benchmarks


Intel Core i9-11900K CPU1 vs CPU2 AMD Ryzen Threadripper PRO 3955WX
Intel Core i9-11900K AMD Ryzen Threadripper PRO 3955WX

CPU comparison

In this CPU comparison, we compare the Intel Core i9-11900K and the AMD Ryzen Threadripper PRO 3955WX and use benchmarks to check which processor is faster.

We compare the Intel Core i9-11900K 8 core processor released in Q1/2021 with the AMD Ryzen Threadripper PRO 3955WX which has 16 CPU cores and was introduced in Q1/2021.
Intel Core i9 (78) Family AMD Ryzen Threadripper PRO (15)
Intel Core i 11000 (22) CPU group AMD Ryzen Threadripper PRO 3000 (4)
11 Generation 3
Rocket Lake S Architecture Castle Peak (Zen 2)
Desktop / Server Segment Desktop / Server
Intel Core i9-10900K Predecessor --
Intel Core i9-12900K Successor AMD Ryzen Threadripper PRO 5955WX

CPU Cores and Base Frequency

The Intel Core i9-11900K is a 8 core processor with a clock frequency of 3.50 GHz (5.30 GHz). The processor can compute 16 threads at the same time. The AMD Ryzen Threadripper PRO 3955WX clocks with 3.90 GHz (4.30 GHz), has 16 CPU cores and can calculate 32 threads in parallel.

Intel Core i9-11900K Characteristic AMD Ryzen Threadripper PRO 3955WX
8 Cores 16
16 Threads 32
normal Core architecture normal
Yes Hyperthreading Yes
Yes Overclocking ? Yes
3.50 GHz Frequency 3.90 GHz
5.30 GHz Turbo Frequency (1 Core) 4.30 GHz
4.80 GHz Turbo Frequency (All Cores) 4.00 GHz

Artificial Intelligence and Machine Learning

Processors with the support of artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. Algorithms for ML improve their performance the more data they have collected via software. ML tasks can be processed up to 10,000 times faster than with a classic processor.

Intel Core i9-11900K Characteristic AMD Ryzen Threadripper PRO 3955WX
-- AI hardware --
-- AI specifications --

Internal Graphics

Graphics (iGPU) integrated into the processor not only enable image output without having to rely on a dedicated graphics solution, but can also efficiently accelerate video playback.

Intel UHD Graphics 750 GPU no iGPU
0.35 GHz GPU frequency --
1.30 GHz GPU (Turbo) --
12 GPU Generation --
14 nm Technology
3 Max. displays
32 Compute units --
256 Shader --
No Hardware Raytracing No
No Frame Generation No
64 GB Max. GPU Memory --
12 DirectX Version --

Hardware codec support

A photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos.

Intel UHD Graphics 750 GPU no iGPU
Decode / Encode Codec h265 / HEVC (8 bit) No
Decode / Encode Codec h265 / HEVC (10 bit) No
Decode / Encode Codec h264 No
Decode / Encode Codec VP9 No
Decode Codec VP8 No
Decode Codec AV1 No
Decode / Encode Codec AVC No
Decode Codec VC-1 No
Decode / Encode Codec JPEG No

Memory & PCIe

Up to 128 GB of memory in a maximum of 2 memory channels is supported by the Intel Core i9-11900K, while the AMD Ryzen Threadripper PRO 3955WX supports a maximum of 2048 GB of memory with a maximum memory bandwidth of 51.2 GB/s enabled.

Intel Core i9-11900K Characteristic AMD Ryzen Threadripper PRO 3955WX
DDR4-3200 Memory DDR4-3200
128 GB Max. Memory 2048 GB
2 (Dual Channel) Memory channels 8 (Octa Channel)
51.2 GB/s Max. Bandwidth 51.2 GB/s
No ECC Yes
4.00 MB L2 Cache 8.00 MB
16.00 MB L3 Cache 64.00 MB
4.0 PCIe version 4.0
20 PCIe lanes 128
39.4 GB/s PCIe Bandwidth 252.0 GB/s

Thermal Management

The Intel Core i9-11900K has a TDP of 125 W. The TDP of the AMD Ryzen Threadripper PRO 3955WX is 280 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution.

Intel Core i9-11900K Characteristic AMD Ryzen Threadripper PRO 3955WX
125 W TDP (PL1 / PBP) 280 W
251 W @ 56 s TDP (PL2) --
-- TDP up --
95 W TDP down --
100 °C Tjunction max. 95 °C

Technical details

The Intel Core i9-11900K has 20.00 MB cache and is manufactured in 14 nm. The cache of AMD Ryzen Threadripper PRO 3955WX is at 72.00 MB. The processor is manufactured in 7 nm.

Intel Core i9-11900K Characteristic AMD Ryzen Threadripper PRO 3955WX
14 nm Technology 7 nm
Monolithic Chip design Chiplet
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4.1, SSE4.2, AVX2, AVX-512 ISA extensions SSE4a, SSE4.1, SSE4.2, AVX2, FMA3
LGA 1200 Socket WRX8 (sWRX8)
VT-x, VT-x EPT, VT-d Virtualization AMD-V, SVM
Yes AES-NI Yes
Windows 10, Windows 11, Linux Operating systems Windows 10, Windows 11, Linux
Q1/2021 Release date Q1/2021
539 $ Release price 1149 $
show more data show more data


Rate these processors

Here you can rate the Intel Core i9-11900K to help other visitors make their purchasing decisions. The average rating is 4.0 stars (7 ratings). Rate now:
Here you can rate the AMD Ryzen Threadripper PRO 3955WX to help other visitors make their purchasing decisions. The average rating is 5.0 stars (2 ratings). Rate now:


Average performance in benchmarks

⌀ Single core performance in 2 CPU benchmarks
Intel Core i9-11900K (100%)
AMD Ryzen Threadripper PRO 3955WX (68%)
⌀ Multi core performance in 4 CPU benchmarks
Intel Core i9-11900K (71%)
AMD Ryzen Threadripper PRO 3955WX (100%)

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 i9-11900K Intel Core i9-11900K
8C 16T @ 5.30 GHz
1878 (100%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
16C 32T @ 4.30 GHz
1310 (70%)

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 i9-11900K Intel Core i9-11900K
8C 16T @ 4.80 GHz
11645 (74%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
16C 32T @ 4.00 GHz
15679 (100%)

Geekbench 6 (Single-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The single-core benchmark only evaluates the performance of the fastest CPU core, the number of CPU cores in a processor is irrelevant here.
Intel Core i9-11900K Intel Core i9-11900K
8C 16T @ 5.30 GHz
2491 (100%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
16C 32T @ 4.30 GHz
1656 (66%)

Geekbench 6 (Multi-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The multi-core benchmark evaluates the performance of all of the processor's CPU cores. Virtual thread improvements such as AMD SMT or Intel's Hyper-Threading have a positive impact on the benchmark result.
Intel Core i9-11900K Intel Core i9-11900K
8C 16T @ 4.80 GHz
12679 (92%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
16C 32T @ 4.00 GHz
13740 (100%)

Estimated results for PassMark CPU Mark

Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’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 i9-11900K Intel Core i9-11900K
8C 16T @ 4.80 GHz
25385 (57%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
16C 32T @ 4.00 GHz
44270 (100%)

CPU-Z Benchmark 17 (Multi-Core)

The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
Intel Core i9-11900K Intel Core i9-11900K
8C 16T @ 3.50 GHz
6539 (60%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
16C 32T @ 3.90 GHz
10843 (100%)

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 i9-11900K Intel Core i9-11900K
8C 16T @ 5.30 GHz
1686 (100%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
16C 32T @ 4.30 GHz
0 (0%)

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 i9-11900K Intel Core i9-11900K
8C 16T @ 4.80 GHz
16211 (100%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
16C 32T @ 4.00 GHz
0 (0%)

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.
Intel Core i9-11900K Intel Core i9-11900K
8C 16T @ 5.30 GHz
650 (100%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
16C 32T @ 4.30 GHz
0 (0%)

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 i9-11900K Intel Core i9-11900K
8C 16T @ 4.80 GHz
6187 (100%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
16C 32T @ 4.00 GHz
0 (0%)

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.
Intel Core i9-11900K Intel Core i9-11900K
Intel UHD Graphics 750 @ 1.30 GHz
666 (100%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
@ 0.00 GHz
0 (0%)

Blender 3.1 Benchmark

In the Blender Benchmark 3.1, the scenes "monster", "junkshop" and "classroom" are rendered and the time required by the system is measured. In our benchmark we test the CPU and not the graphics card. Blender 3.1 was presented as a standalone version in March 2022.
Intel Core i9-11900K Intel Core i9-11900K
8C 16T @ 4.80 GHz
243 (100%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
16C 32T @ 4.00 GHz
0 (0%)

CPU-Z Benchmark 17 (Single-Core)

The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
Intel Core i9-11900K Intel Core i9-11900K
8C 16T @ 4.80 GHz
676 (100%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
16C 32T @ 4.00 GHz
0 (0%)

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.
Intel Core i9-11900K Intel Core i9-11900K
8C 16T @ 5.30 GHz
262 (100%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
16C 32T @ 4.30 GHz
0 (0%)

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.
Intel Core i9-11900K Intel Core i9-11900K
8C 16T @ 4.80 GHz
2515 (100%)
AMD Ryzen Threadripper PRO 3955WX AMD Ryzen Threadripper PRO 3955WX
16C 32T @ 4.00 GHz
0 (0%)

Devices using this processor

Intel Core i9-11900K AMD Ryzen Threadripper PRO 3955WX
Unknown Unknown

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