AMD Ryzen 5 PRO 7645 vs AMD EPYC 7542

Comparative analysis of AMD Ryzen 5 PRO 7645 and AMD EPYC 7542 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 Ryzen 5 PRO 7645

AMD EPYC 7542

Differences

Reasons to consider the AMD Ryzen 5 PRO 7645

CPU is newer: launch date 3 year(s) 10 month(s) later
Around 50% higher clock speed: 5.1 GHz vs 3.4 GHz
A newer manufacturing process allows for a more powerful, yet cooler running processor: 5 nm vs 7 nm, 14 nm
3.5x lower typical power consumption: 65 Watt vs 225 Watt
Around 74% better performance in PassMark - Single thread mark: 3615 vs 2073

Specifications (specs)
Launch date	13 Jun 2023 vs 7 Aug 2019
Maximum frequency	5.1 GHz vs 3.4 GHz
Manufacturing process technology	5 nm vs 7 nm, 14 nm
Thermal Design Power (TDP)	65 Watt vs 225 Watt
Benchmarks
PassMark - Single thread mark	3615 vs 2073

Reasons to consider the AMD EPYC 7542

26 more cores, run more applications at once: 32 vs 6
52 more threads: 64 vs 12
5.3x more L1 cache, more data can be stored in the L1 cache for quick access later
2796202.7x more L2 cache, more data can be stored in the L2 cache for quick access later
4194304x more L3 cache, more data can be stored in the L3 cache for quick access later
3.2x better performance in PassMark - CPU mark: 73885 vs 23147

Specifications (specs)
Number of cores	32 vs 6
Number of threads	64 vs 12
L1 cache	2 MB vs 64K (per core)
L2 cache	16 MB vs 1MB (per core)
L3 cache	128 MB vs 32MB (shared)
Benchmarks
PassMark - CPU mark	73885 vs 23147

Compare benchmarks

CPU 1: AMD Ryzen 5 PRO 7645
CPU 2: AMD EPYC 7542

PassMark - Single thread mark

CPU 1

CPU 2

3615

2073

PassMark - CPU mark

CPU 1

CPU 2

23147

73885

Name	AMD Ryzen 5 PRO 7645	AMD EPYC 7542
PassMark - Single thread mark	3615	2073
PassMark - CPU mark	23147	73885

Compare specifications (specs)

	AMD Ryzen 5 PRO 7645	AMD EPYC 7542
Essentials
Launch date	13 Jun 2023	7 Aug 2019
Place in performance rating	296	288
Architecture codename		Zen 2
Launch price (MSRP)		$3400
OPN PIB		100-100000075WOF
OPN Tray		100-000000075
Vertical segment		Server
Performance
Base frequency	3.8 GHz	2.9 GHz
Die size	71 mm²
L1 cache	64K (per core)	2 MB
L2 cache	1MB (per core)	16 MB
L3 cache	32MB (shared)	128 MB
Manufacturing process technology	5 nm	7 nm, 14 nm
Maximum case temperature (TCase)	61°C
Maximum core temperature	95°C
Maximum frequency	5.1 GHz	3.4 GHz
Number of cores	6	32
Number of threads	12	64
Transistor count	6,570 million
Unlocked
Memory
ECC memory support
Supported memory types	DDR5-5200 MHz, Dual-channel	DDR4-3200
Max memory channels		8
Maximum memory bandwidth		190.7 GB/s
Maximum memory size		4 TB
Compatibility
Max number of CPUs in a configuration	1
Sockets supported	AM5	SP3
Thermal Design Power (TDP)	65 Watt	225 Watt
Socket Count		1P/2P
Peripherals
PCIe configurations	Gen 5, 24 Lanes, (CPU only)
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™)