AMD Epyc 7643 VS Intel Core i3-11100B

Comparing AMD Epyc 7643 vs Intel Core i3-11100B

Comparison of video cards AMD Epyc 7643 vs Intel Core i3-11100B in benchmarks and specifications.

Differences Specifications

Differences

Top features of AMD Epyc 7643

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Top features of Intel Core i3-11100B

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Higher clock speed

3.60 GHz 2.30 GHz

Around 36% better clock speed
Performance per watt

65 W 280 W

About 0.23 times less performance per watt

Specifications

Complete list of technical specifications

AMD Epyc 7643 Intel Core i3-11100B

CPU generation and family

Let's find out which one of AMD Epyc 7643 and Intel Core i3-11100B is of a more recent generation, and what segment it belongs to.

Specification	Value
Name	AMD Epyc 7643 Intel Core i3-11100B
Segment	Desktop / Server Desktop / Server
Family	AMD Epyc Intel Core i3
Generation	3 11
CPU group	AMD Epyc 7003 Intel Core i 11000
Predecessor	AMD Epyc 7642 --
Successor	-- Intel Core i3-12100

CPU Cores and Base Frequency

In this block we are going to compare AMD Epyc 7643 vs Intel Core i3-11100B by main technical specifications: number of cores and threads, base and maximum frequencies, process technology and cache size. The higher these specifications are, the more powerful your CPU will be.

Specification	Value
Frequency	2.30 GHz 3.60 GHz
Overclocking	No No
Core architecture	normal normal

Internal Graphics

Common specifications for integrated graphics cards in AMD Epyc 7643 and Intel Core i3-11100B along with supported interfaces and connection options. This block has no effect on the final efficiency of the CPU.

Specification	Value
GPU name	no iGPU Intel UHD Graphics 11th Gen (16 EU)
GPU frequency	0.35 GHz
GPU (Turbo)	No turbo 1.40 GHz
Execution units	16
Shader	128
Max. GPU Memory	-- 64 GB
Max. displays	3
Generation	11
Technology	10 nm
Release date	Q2/2021

Hardware codec support

Let's compare the support of video codecs between AMD Epyc 7643 and Intel Core i3-11100B. Hardware support of video decoding by embedded graphics cards directly affects the speed and quality of rendering videos.

Specification	Value
h265 / HEVC (8 bit)	No Decode / Encode
h265 / HEVC (10 bit)	No Decode / Encode
h264	No Decode / Encode
VP9	No Decode / Encode
VP8	No Decode / Encode
AV1	No Decode
AVC	No Decode / Encode
VC-1	No Decode
JPEG	No Decode / Encode

Memory & PCIe

To choose the best model between AMD Epyc 7643 and Intel Core i3-11100B you need to pay special attention to memory type, clock frequency, multi-channel features, and PCIe version. The higher these numbers are, the better your CPU will be. Keep in mind that the maximum memory and frequency may also depend on the model of the motherboard.

Specification	Value
Memory type	DDR4-3200 DDR4-3200
Max. Memory	128 GB
ECC	Yes No
Memory channels	8 2 (Dual Channel)

Thermal Management

Let's find out what TDP value would be better for AMD Epyc 7643 or Intel Core i3-11100B? The Thermal Design Power (TDP) indicates the maximum amount of heat that should be dissipated by the chip cooling system. However, the value of TDP gives only a rough indication of the real power consumption of the CPU.

Specification	Value
TDP (PL1)	280 W 65 W
Tjunction max.	-- 100 \xc2\xb0C

Technical details

Here you can find a comparison of 2nd and 3rd level cache sizes for AMD Epyc 7643 and Intel Core i3-11100B CPUs along with a list of ISA extensions.

Specification	Value
Instruction set (ISA)	x86-64 (64 bit) x86-64 (64 bit)
Virtualization	AMD-V, SVM VT-x, VT-x EPT, VT-d
ISA extensions	SSE4a, SSE4.1, SSE4.2, AVX2, FMA3 SSE4.1, SSE4.2, AVX2, AVX-512
L3-Cache	256.00 MB 12.00 MB
Architecture	Milan (Zen 3) Rocket Lake S
Technology	7 nm 14 nm
Socket	SP3 LGA 1200
Release date	Q1/2021 Q2/2021