AMD EPYC 7642 vs AMD EPYC 7702

Comparative analysis of AMD EPYC 7642 and AMD EPYC 7702 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.

 

Differences

Reasons to consider the AMD EPYC 7642

  • Processor is unlocked, an unlocked multiplier allows for easier overclocking
  • Around 1% higher clock speed: 3.4 GHz vs 3.35 GHz
  • Around 13% more L1 cache; more data can be stored in the L1 cache for quick access later
  • Around 1% better performance in PassMark - Single thread mark: 2140 vs 2116
  • Around 1% better performance in PassMark - CPU mark: 94050 vs 93307
Specifications (specs)
Unlocked Unlocked vs Locked
Maximum frequency 3.4 GHz vs 3.35 GHz
L1 cache 4.5 MB vs 4 MB
Benchmarks
PassMark - Single thread mark 2140 vs 2116
PassMark - CPU mark 94050 vs 93307

Reasons to consider the AMD EPYC 7702

  • 16 more cores, run more applications at once: 64 vs 48
  • 32 more threads: 128 vs 96
  • Around 33% more L2 cache; more data can be stored in the L2 cache for quick access later
  • Around 13% lower typical power consumption: 200 Watt vs 225 Watt
Number of cores 64 vs 48
Number of threads 128 vs 96
L2 cache 32 MB vs 24 MB
Thermal Design Power (TDP) 200 Watt vs 225 Watt

Compare benchmarks

CPU 1: AMD EPYC 7642
CPU 2: AMD EPYC 7702

PassMark - Single thread mark
CPU 1
CPU 2
2140
2116
PassMark - CPU mark
CPU 1
CPU 2
94050
93307
Name AMD EPYC 7642 AMD EPYC 7702
PassMark - Single thread mark 2140 2116
PassMark - CPU mark 94050 93307

Compare specifications (specs)

AMD EPYC 7642 AMD EPYC 7702

Essentials

Architecture codename Zen 2 Zen 2
Launch date 7 Aug 2019 7 Aug 2019
Place in performance rating 136 153
Vertical segment Server Server
Launch price (MSRP) $6450
OPN PIB 100-100000038WOF
OPN Tray 100-000000038

Performance

Base frequency 2.4 GHz 2.0 GHz
L1 cache 4.5 MB 4 MB
L2 cache 24 MB 32 MB
L3 cache 256 MB 256 MB
Manufacturing process technology 7 nm 7 nm, 14 nm
Maximum frequency 3.4 GHz 3.35 GHz
Number of cores 48 64
Number of threads 96 128
Unlocked

Memory

ECC memory support
Max memory channels 8 8
Maximum memory bandwidth 190.7 GB/s 204.8 GB/s
Maximum memory size 4 TB 4 TB
Supported memory types DDR4-3200 DDR4-3200

Compatibility

Max number of CPUs in a configuration 2
Sockets supported SP3 SP3
Thermal Design Power (TDP) 225 Watt 200 Watt
Socket Count 1P/2P

Peripherals

Max number of PCIe lanes 128 128
PCI Express revision 4.0 4.0
PCIe configurations x16, x8 x16, x8

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™)