AMD Ryzen 5 PRO 7645 vs AMD EPYC 7453

Comparative analysis of AMD Ryzen 5 PRO 7645 and AMD EPYC 7453 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 7453

Differences

Reasons to consider the AMD Ryzen 5 PRO 7645

CPU is newer: launch date 2 year(s) 2 month(s) later
Around 48% higher clock speed: 5.1 GHz vs 3.45 GHz
A newer manufacturing process allows for a more powerful, yet cooler running processor: 5 nm vs 7 nm+
3.5x lower typical power consumption: 65 Watt vs 225 Watt
Around 65% better performance in PassMark - Single thread mark: 3901 vs 2371

Specifications (specs)
Launch date	13 Jun 2023 vs 15 Mar 2021
Maximum frequency	5.1 GHz vs 3.45 GHz
Manufacturing process technology	5 nm vs 7 nm+
Thermal Design Power (TDP)	65 Watt vs 225 Watt
Benchmarks
PassMark - Single thread mark	3901 vs 2371

Reasons to consider the AMD EPYC 7453

22 more cores, run more applications at once: 28 vs 6
44 more threads: 56 vs 12
4.7x more L1 cache, more data can be stored in the L1 cache for quick access later
2446677.3x 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
3x better performance in PassMark - CPU mark: 80327 vs 27106

Specifications (specs)
Number of cores	28 vs 6
Number of threads	56 vs 12
L1 cache	1792 KB vs 64K (per core)
L2 cache	14 MB vs 1MB (per core)
L3 cache	64 MB vs 32MB (shared)
Benchmarks
PassMark - CPU mark	80327 vs 27106

Compare benchmarks

CPU 1: AMD Ryzen 5 PRO 7645
CPU 2: AMD EPYC 7453

PassMark - Single thread mark

CPU 1

CPU 2

3901

2371

PassMark - CPU mark

CPU 1

CPU 2

27106

80327

Name	AMD Ryzen 5 PRO 7645	AMD EPYC 7453
PassMark - Single thread mark	3901	2371
PassMark - CPU mark	27106	80327

Compare specifications (specs)

	AMD Ryzen 5 PRO 7645	AMD EPYC 7453
Essentials
Launch date	13 Jun 2023	15 Mar 2021
Place in performance rating	203	175
Architecture codename		Zen 3
Launch price (MSRP)		$1570
OPN PIB		100-100000319WOF
OPN Tray		100-000000319
Vertical segment		Server
Performance
Base frequency	3.8 GHz	2.75 GHz
Die size	71 mm²
L1 cache	64K (per core)	1792 KB
L2 cache	1MB (per core)	14 MB
L3 cache	32MB (shared)	64 MB
Manufacturing process technology	5 nm	7 nm+
Maximum case temperature (TCase)	61°C
Maximum core temperature	95°C
Maximum frequency	5.1 GHz	3.45 GHz
Number of cores	6	28
Number of threads	12	56
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		190.73 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
Configurable TDP		225-240 Watt
Socket Count		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™)