Intel Core i9-11900KB vs AMD Ryzen 9 PRO 3900

Last updated: 2023-04-26

CPU comparison with benchmarks


Intel Core i9-11900KB		AMD Ryzen 9 PRO 3900
CPU comparison Intel Core i9-11900KB or AMD Ryzen 9 PRO 3900 - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results. The Intel Core i9-11900KB has 8 cores with 16 threads and clocks with a maximum frequency of 5.30 GHz. Up to 128 GB of memory is supported in 2 memory channels. The Intel Core i9-11900KB was released in Q2/2021. The AMD Ryzen 9 PRO 3900 has 12 cores with 24 threads and clocks with a maximum frequency of 4.30 GHz. The CPU supports up to 128 GB of memory in 2 memory channels. The AMD Ryzen 9 PRO 3900 was released in Q3/2019.

Intel Core i9 (78)	Family	AMD Ryzen 9 PRO (4)
Intel Core i 11000H (17)	CPU group	AMD Ryzen 3000 (15)
11	Generation	3
Tiger Lake H	Architecture	Matisse (Zen 2)
Mobile	Segment	Desktop / Server
--	Predecessor	--
--	Successor	--

CPU Cores and Base Frequency The Intel Core i9-11900KB is a 8 core processor with a clock frequency of 3.30 GHz (5.30 GHz). The AMD Ryzen 9 PRO 3900 has 12 CPU cores with a clock frequency of 3.10 GHz (4.30 GHz).
Intel Core i9-11900KB	Characteristic	AMD Ryzen 9 PRO 3900
8	Cores	12
16	Threads	24
normal	Core architecture	normal
Yes	Hyperthreading	Yes
Yes	Overclocking ?	Yes
3.30 GHz	Frequency	3.10 GHz
5.30 GHz	Turbo Frequency (1 Core)	4.30 GHz
4.90 GHz	Turbo Frequency (All Cores)	--

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 i9-11900KB	Characteristic	AMD Ryzen 9 PRO 3900
--	AI hardware	--
--	AI specifications	--

Internal Graphics The integrated graphics unit of a processor is not only responsible for the pure image output on the system, but can also significantly increase the efficiency of the system with the support of modern video codecs.
Intel UHD Graphics 11th Gen (32 EU)	GPU	no iGPU
0.35 GHz	GPU frequency	--
1.45 GHz	GPU (Turbo)	--
11	GPU Generation	--
10 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 11th Gen (32 EU)	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 / Encode	Codec VP8	No
Decode	Codec AV1	No
Decode / Encode	Codec AVC	No
Decode	Codec VC-1	No
Decode / Encode	Codec JPEG	No

Memory & PCIe The Intel Core i9-11900KB supports a maximum of 128 GB of memory in 2 memory channels. The AMD Ryzen 9 PRO 3900 can connect up to 128 GB of memory in 2 memory channels.
Intel Core i9-11900KB	Characteristic	AMD Ryzen 9 PRO 3900
DDR4-3200	Memory	DDR4-3200
128 GB	Max. Memory	128 GB
2 (Dual Channel)	Memory channels	2 (Dual Channel)
51.2 GB/s	Max. Bandwidth	51.2 GB/s
No	ECC	No
4.00 MB	L2 Cache	--
20.00 MB	L3 Cache	64.00 MB
3.0	PCIe version	4.0
16	PCIe lanes	20
15.8 GB/s	PCIe Bandwidth	39.4 GB/s
Thermal Management The TDP (Thermal Design Power) of a processor specifies the required cooling solution. The Intel Core i9-11900KB has a TDP of 65 W, that of the AMD Ryzen 9 PRO 3900 is 65 W.
Intel Core i9-11900KB	Characteristic	AMD Ryzen 9 PRO 3900
65 W	TDP (PL1 / PBP)	65 W
--	TDP (PL2)	--
--	TDP up	--
55 W	TDP down	--
100 °C	Tjunction max.	95 °C
Technical details The Intel Core i9-11900KB has a 24.00 MB cache, while the AMD Ryzen 9 PRO 3900 cache has a total of 64.00 MB.
Intel Core i9-11900KB	Characteristic	AMD Ryzen 9 PRO 3900
10 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
BGA 1787	Socket	AM4 (PGA 1331)
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
Q2/2021	Release date	Q3/2019
583 $	Release price	485 $

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Intel Core i9-11900KB 8C 16T @ 3.30 GHz (5.30 GHz) buy now on Amazon and save! AMD Ryzen 9 PRO 3900 12C 24T @ 3.10 GHz (4.30 GHz) buy now on Amazon and save!

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Average performance in benchmarks

⌀ Single core performance in 2 CPU benchmarks

Intel Core i9-11900KB (100%)

AMD Ryzen 9 PRO 3900 (70%)

⌀ Multi core performance in 2 CPU benchmarks

Intel Core i9-11900KB (87%)

AMD Ryzen 9 PRO 3900 (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 i9-11900KB 8C 16T @ 5.30 GHz	1878 (100%)
	AMD Ryzen 9 PRO 3900 12C 24T @ 4.30 GHz	1194 (64%)

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 i9-11900KB 8C 16T @ 5.30 GHz	2231 (100%)
	AMD Ryzen 9 PRO 3900 12C 24T @ 4.30 GHz	1688 (76%)

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 i9-11900KB 8C 16T @ 4.90 GHz	10645 (100%)
	AMD Ryzen 9 PRO 3900 12C 24T @ 3.10 GHz	10522 (99%)

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 i9-11900KB 8C 16T @ 4.90 GHz	23151 (74%)
	AMD Ryzen 9 PRO 3900 12C 24T @ 3.10 GHz	31440 (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 i9-11900KB 8C 16T @ 5.30 GHz	1663 (100%)
	AMD Ryzen 9 PRO 3900 12C 24T @ 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 i9-11900KB 8C 16T @ 4.90 GHz	12264 (100%)
	AMD Ryzen 9 PRO 3900 12C 24T @ 3.10 GHz	0 (0%)

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 i9-11900KB 8C 16T @ 4.90 GHz	0 (0%)
	AMD Ryzen 9 PRO 3900 12C 24T @ 3.10 GHz	10974 (100%)

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 i9-11900KB 8C 16T @ 5.30 GHz	640 (100%)
	AMD Ryzen 9 PRO 3900 12C 24T @ 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 i9-11900KB 8C 16T @ 4.90 GHz	4712 (100%)
	AMD Ryzen 9 PRO 3900 12C 24T @ 3.10 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 i9-11900KB Intel UHD Graphics 11th Gen (32 EU) @ 1.45 GHz	742 (100%)
	AMD Ryzen 9 PRO 3900 @ 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 i9-11900KB 8C 16T @ 4.90 GHz	0 (0%)
	AMD Ryzen 9 PRO 3900 12C 24T @ 3.10 GHz	234 (100%)

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 i9-11900KB 8C 16T @ 4.90 GHz	200 (100%)
	AMD Ryzen 9 PRO 3900 12C 24T @ 3.10 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 i9-11900KB 8C 16T @ 5.30 GHz	256 (100%)
	AMD Ryzen 9 PRO 3900 12C 24T @ 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 i9-11900KB 8C 16T @ 4.90 GHz	2144 (100%)
	AMD Ryzen 9 PRO 3900 12C 24T @ 3.10 GHz	0 (0%)

Devices using this processor
Intel Core i9-11900KB	AMD Ryzen 9 PRO 3900
Unknown	Unknown

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