AMD EPYC 9254 vs AMD EPYC 7642

Comparative analysis of AMD EPYC 9254 and AMD EPYC 7642 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 9254

AMD EPYC 7642

Differences

Reasons to consider the AMD EPYC 9254

CPU is newer: launch date 3 year(s) 3 month(s) later
Around 22% higher clock speed: 4.15 GHz vs 3.4 GHz
A newer manufacturing process allows for a more powerful, yet cooler running processor: 5 nm vs 7 nm
Around 13% lower typical power consumption: 200 Watt vs 225 Watt
Around 42% better performance in PassMark - Single thread mark: 3036 vs 2142

Specifications (specs)
Launch date	10 Nov 2022 vs 7 Aug 2019
Maximum frequency	4.15 GHz vs 3.4 GHz
Manufacturing process technology	5 nm vs 7 nm
Thermal Design Power (TDP)	200 Watt vs 225 Watt
Benchmarks
PassMark - Single thread mark	3036 vs 2142

Reasons to consider the AMD EPYC 7642

Processor is unlocked, an unlocked multiplier allows for easier overclocking
24 more cores, run more applications at once: 48 vs 24
48 more threads: 96 vs 48
3x more L1 cache, more data can be stored in the L1 cache for quick access later
1048576x more L2 cache, more data can be stored in the L2 cache for quick access later
2097152x more L3 cache, more data can be stored in the L3 cache for quick access later
Around 43% better performance in PassMark - CPU mark: 92995 vs 64815

Specifications (specs)
Unlocked	Unlocked vs Locked
Number of cores	48 vs 24
Number of threads	96 vs 48
L1 cache	4.5 MB vs 64K (per core)
L2 cache	24 MB vs 1MB (per core)
L3 cache	256 MB vs 128MB (shared)
Benchmarks
PassMark - CPU mark	92995 vs 64815

Compare benchmarks

CPU 1: AMD EPYC 9254
CPU 2: AMD EPYC 7642

PassMark - Single thread mark

CPU 1

CPU 2

3036

2142

PassMark - CPU mark

CPU 1

CPU 2

64815

92995

Name	AMD EPYC 9254	AMD EPYC 7642
PassMark - Single thread mark	3036	2142
PassMark - CPU mark	64815	92995

Compare specifications (specs)

	AMD EPYC 9254	AMD EPYC 7642
Essentials
Launch date	10 Nov 2022	7 Aug 2019
Launch price (MSRP)	$2299
Place in performance rating	140	147
Architecture codename		Zen 2
Vertical segment		Server
Performance
Base frequency	2.9 GHz	2.4 GHz
Die size	4x 72 mm²
L1 cache	64K (per core)	4.5 MB
L2 cache	1MB (per core)	24 MB
L3 cache	128MB (shared)	256 MB
Manufacturing process technology	5 nm	7 nm
Maximum frequency	4.15 GHz	3.4 GHz
Number of cores	24	48
Number of threads	48	96
Transistor count	26,280 million
Unlocked
Memory
ECC memory support
Supported memory types	DDR5-4800 MHz, Twelve-channel	DDR4-3200
Max memory channels		8
Maximum memory bandwidth		190.7 GB/s
Maximum memory size		4 TB
Compatibility
Configurable TDP	200-240 Watt
Max number of CPUs in a configuration	2	2
Sockets supported	SP5	SP3
Thermal Design Power (TDP)	200 Watt	225 Watt
Peripherals
PCIe configurations	Gen 5, 128 Lanes, (CPU only)	x16, x8
Max number of PCIe lanes		128
PCI Express revision		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™)