Intel Core i9-11900K vs. AMD Ryzen 9 5900X

CPU comparison with benchmarks


Intel Core i9-11900K CPU1 vs CPU2 AMD Ryzen 9 5900X
Intel Core i9-11900K AMD Ryzen 9 5900X
Intel Core i9 Family AMD Ryzen
Intel Core i 11000 CPU group AMD Ryzen 5000
11 Generation 4
Rocket Lake S Architecture Vermeer (Zen 3)
Desktop / Server Segment Desktop / Server
Intel Core i9-10900K Predecessor AMD Ryzen 9 3900X
Intel Core i9-12900K Successor --

CPU Cores and Base FrequencyCPU Cores and Base Frequency

8 Cores 12
16 Threads 24
3.50 GHz Frequency 3.70 GHz
5.30 GHz Turbo (1 Core) 4.80 GHz
4.80 GHz Turbo (All Cores) 4.50 GHz
normal Core architecture normal
Yes Hyperthreading Yes
Yes Overclocking ? Yes

Internal GraphicsInternal Graphics

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 Execution units
256 Shader
Max. GPU Memory
12 DirectX Version

Hardware codec supportHardware codec support

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 & PCIeMemory & PCIe

DDR4-3200 Memory DDR4-3200
128 GB Max. Memory 128 GB
2 Memory channels 2
No ECC Yes
4.00 MB L2 Cache 6.00 MB
16.00 MB L3 Cache 64.00 MB
4.0 PCIe version 4.0
20 PCIe lanes 20

Thermal ManagementThermal Management

125 W TDP (PL1) 105 W
251 W @ 56 s TDP (PL2) 142 W
-- TDP up --
95 W TDP down --
100 °C Tjunction max. 95 °C

Technical detailsTechnical details

14 nm Technology 7 nm
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 AM4
VT-x, VT-x EPT, VT-d Virtualization AMD-V, SVM
Yes AES-NI Yes
Q1/2021 Release date Q4/2020
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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
8x 3.50 GHz (5.30 GHz) HT
1686 (100%)
Amazon
AMD Ryzen 9 5900X AMD Ryzen 9 5900X
12x 3.70 GHz (4.80 GHz) HT
1622 (96%)
Amazon
Show all Cinebench R23 (Single-Core) results



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
8x 3.50 GHz (5.30 GHz) HT
16211 (74%)
Amazon
AMD Ryzen 9 5900X AMD Ryzen 9 5900X
12x 3.70 GHz (4.80 GHz) HT
21878 (100%)
Amazon
Show all Cinebench R23 (Multi-Core) results



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
8x 3.50 GHz (5.30 GHz) HT
650 (100%)
Amazon
AMD Ryzen 9 5900X AMD Ryzen 9 5900X
12x 3.70 GHz (4.80 GHz) HT
637 (98%)
Amazon
Show all Cinebench R20 (Single-Core) results



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
8x 3.50 GHz (5.30 GHz) HT
6187 (73%)
Amazon
AMD Ryzen 9 5900X AMD Ryzen 9 5900X
12x 3.70 GHz (4.80 GHz) HT
8468 (100%)
Amazon
Show all Cinebench R20 (Multi-Core) results



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
8x 3.50 GHz (5.30 GHz) HT
262 (97%)
Amazon
AMD Ryzen 9 5900X AMD Ryzen 9 5900X
12x 3.70 GHz (4.80 GHz) HT
270 (100%)
Amazon
Show all Cinebench R15 (Single-Core) results



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
8x 3.50 GHz (5.30 GHz) HT
2515 (68%)
Amazon
AMD Ryzen 9 5900X AMD Ryzen 9 5900X
12x 3.70 GHz (4.80 GHz) HT
3684 (100%)
Amazon
Show all Cinebench R15 (Multi-Core) results



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
8x 3.50 GHz (5.30 GHz) HT
1878 (100%)
Amazon
AMD Ryzen 9 5900X AMD Ryzen 9 5900X
12x 3.70 GHz (4.80 GHz) HT
1646 (88%)
Amazon
Show all Geekbench 5, 64bit (Single-Core) results



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
8x 3.50 GHz (5.30 GHz) HT
11645 (79%)
Amazon
AMD Ryzen 9 5900X AMD Ryzen 9 5900X
12x 3.70 GHz (4.80 GHz) HT
14650 (100%)
Amazon
Show all Geekbench 5, 64bit (Multi-Core) results



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. Tested with XMRig v6.x under the operation system HiveOS.

Intel Core i9-11900K Intel Core i9-11900K
8x 3.50 GHz (5.30 GHz) HT
7.25 (50%)
Amazon
AMD Ryzen 9 5900X AMD Ryzen 9 5900X
12x 3.70 GHz (4.80 GHz) HT
14.5 (100%)
Amazon
Show all Monero Hashrate kH/s results



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%)
Amazon
AMD Ryzen 9 5900X AMD Ryzen 9 5900X
--
0 (0%)
Amazon
Show all iGPU - FP32 Performance (Single-precision GFLOPS) results



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
8x 3.50 GHz (5.30 GHz) HT
28465 (72%)
Amazon
AMD Ryzen 9 5900X AMD Ryzen 9 5900X
12x 3.70 GHz (4.80 GHz) HT
39564 (100%)
Amazon
Show all Estimated results for PassMark CPU Mark results



Devices using this processorDevices using this processor

Intel Core i9-11900K AMD Ryzen 9 5900X
Unknown Unknown
the CPU comparison between the Intel Core i9-11900K and the AMD Ryzen 9 5900X shows a slightly higher raw IPC performance on the side of the AMD Ryzen 9 5900X. However, due to the higher single-core clock of the Intel Core i9-11900K, Intel can neutralize this disadvantage and so both desktop processors are about the same in single-core benchmarks.

If applications or benchmarks can use all CPU cores of the processors, Intel's 11th generation Core i9 only sees the rear lights of the AMD Ryzen 9 5900X. This can set itself apart from the Intel Core i9 by between 25 and 30%, which is due to the significantly higher number of cores of 12 (24 threads) compared to only 8 (16 threads) of the i9.

Actually, Intel wanted to manufacture the "Rocket Lake S" processors with a new architecture in 10 nm. Presumably due to delivery or production problems, Intel has decided to implement a backport to the tried and tested, but outdated 14 nm production. This is probably the reason why Intel has given the "Rocket Lake S" processors a maximum of 8 CPU cores.

AMD has more room here and can implement up to 16 CPU cores on the AM4 socket. The successor socket should even come with twice the number of CPU cores. New in the Intel Core i9-11900K is the support of PCIe 4.0, which AMD has supported since the previous generation (Ryzen 3xxx). This allows new M.2 SSDs to be connected to the system very quickly. Transfer rates of 7.5 GB / s are possible via four PCIe 4.0 lines.

Both CPUs support 128 GB of RAM of the DDR4-3200 type in two memory channels and achieve transfer rates of approx. 55-60 GB per second. If you want to use faster memory, you can do so with both processors. Intel uses the so-called XMP overclocking profiles that AMD uses with D.O.C.P. similarly supported. Manual overclocking is of course also possible. Both processors manage up to DDR4-3600 without any problems.

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