AMD EPYC 7453 vs AMD EPYC 7643

Comparative analysis of AMD EPYC 7453 and AMD EPYC 7643 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, Peripherals, Advanced Technologies, Virtualization. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark.

AMD EPYC 7453

AMD EPYC 7643

Differences

Reasons to consider the AMD EPYC 7453

Around 7% lower typical power consumption: 225 Watt vs 240 Watt
Around 17% better performance in PassMark - Single thread mark: 2371 vs 2020

Specifications (specs)
Thermal Design Power (TDP)	225 Watt vs 240 Watt
Benchmarks
PassMark - Single thread mark	2371 vs 2020

Reasons to consider the AMD EPYC 7643

20 more cores, run more applications at once: 48 vs 28
40 more threads: 96 vs 56
Around 4% higher clock speed: 3.6 GHz vs 3.45 GHz
Around 71% more L1 cache; more data can be stored in the L1 cache for quick access later
Around 71% more L2 cache; more data can be stored in the L2 cache for quick access later
4x more L3 cache, more data can be stored in the L3 cache for quick access later
Around 14% better performance in PassMark - CPU mark: 91554 vs 80327

Specifications (specs)
Number of cores	48 vs 28
Number of threads	96 vs 56
Maximum frequency	3.6 GHz vs 3.45 GHz
L1 cache	3 MB vs 1792 KB
L2 cache	24 MB vs 14 MB
L3 cache	256 MB vs 64 MB
Benchmarks
PassMark - CPU mark	91554 vs 80327

Compare benchmarks

CPU 1: AMD EPYC 7453
CPU 2: AMD EPYC 7643

PassMark - Single thread mark

CPU 1

CPU 2

2371

2020

PassMark - CPU mark

CPU 1

CPU 2

80327

91554

Name	AMD EPYC 7453	AMD EPYC 7643
PassMark - Single thread mark	2371	2020
PassMark - CPU mark	80327	91554

Compare specifications (specs)

	AMD EPYC 7453	AMD EPYC 7643
Essentials
Architecture codename	Zen 3	Zen 3
Launch date	15 Mar 2021	15 Mar 2021
Launch price (MSRP)	$1570	$4995
OPN PIB	100-100000319WOF	100-100000326WOF
OPN Tray	100-000000319	100-000000326
Place in performance rating	177	178
Vertical segment	Server	Server
Performance
Base frequency	2.75 GHz	2.3 GHz
L1 cache	1792 KB	3 MB
L2 cache	14 MB	24 MB
L3 cache	64 MB	256 MB
Manufacturing process technology	7 nm+	7 nm+
Maximum frequency	3.45 GHz	3.6 GHz
Number of cores	28	48
Number of threads	56	96
Unlocked
Memory
ECC memory support
Max memory channels	8	8
Maximum memory bandwidth	190.73 GB/s	190.73 GB/s
Maximum memory size	4 TB	4 TB
Supported memory types	DDR4-3200	DDR4-3200
Compatibility
Configurable TDP	225-240 Watt	225-240 Watt
Socket Count	2P	1P/2P
Sockets supported	SP3	SP3
Thermal Design Power (TDP)	225 Watt	240 Watt
Peripherals
Max number of PCIe lanes	128	128
PCI Express revision	4.0	4.0
Advanced Technologies
AMD SenseMI
Fused Multiply-Add 3 (FMA3)
Intel® Advanced Vector Extensions (AVX)
Intel® Advanced Vector Extensions 2 (AVX2)
Intel® AES New Instructions
Virtualization
AMD Virtualization (AMD-V™)