AMD EPYC 7663 vs AMD EPYC 7742

Comparative analysis of AMD EPYC 7663 and AMD EPYC 7742 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 7663

AMD EPYC 7742

Differences

Reasons to consider the AMD EPYC 7663

CPU is newer: launch date 1 year(s) 7 month(s) later
Around 3% higher clock speed: 3.5 GHz vs 3.4 GHz
Around 21% better performance in PassMark - Single thread mark: 2616 vs 2157

Specifications (specs)
Launch date	15 Mar 2021 vs 7 Aug 2019
Maximum frequency	3.5 GHz vs 3.4 GHz
Benchmarks
PassMark - Single thread mark	2616 vs 2157

Reasons to consider the AMD EPYC 7742

8 more cores, run more applications at once: 64 vs 56
16 more threads: 128 vs 112
Around 14% more L1 cache; more data can be stored in the L1 cache for quick access later
Around 14% more L2 cache; more data can be stored in the L2 cache for quick access later
Around 7% lower typical power consumption: 225 Watt vs 240 Watt
Around 18% better performance in PassMark - CPU mark: 97501 vs 82883

Specifications (specs)
Number of cores	64 vs 56
Number of threads	128 vs 112
L1 cache	4 MB vs 64 KB (per core)
L2 cache	32 MB vs 512 KB (per core)
Thermal Design Power (TDP)	225 Watt vs 240 Watt
Benchmarks
PassMark - CPU mark	97501 vs 82883

Compare benchmarks

CPU 1: AMD EPYC 7663
CPU 2: AMD EPYC 7742

PassMark - Single thread mark

CPU 1

CPU 2

2616

2157

PassMark - CPU mark

CPU 1

CPU 2

82883

97501

Name	AMD EPYC 7663	AMD EPYC 7742
PassMark - Single thread mark	2616	2157
PassMark - CPU mark	82883	97501

Compare specifications (specs)

	AMD EPYC 7663	AMD EPYC 7742
Essentials
Launch date	15 Mar 2021	7 Aug 2019
Launch price (MSRP)	$6366
Place in performance rating	91	95
Architecture codename		Zen 2
Vertical segment		Server
Performance
Base frequency	2000 MHz	2.25 GHz
Die size	8x 81 mm²
L1 cache	64 KB (per core)	4 MB
L2 cache	512 KB (per core)	32 MB
L3 cache	256 MB (shared)	256 MB
Manufacturing process technology	7 nm	7 nm, 14 nm
Maximum frequency	3.5 GHz	3.4 GHz
Number of cores	56	64
Number of threads	112	128
Transistor count	33,200 million
Unlocked
Memory
ECC memory support
Supported memory types	DDR4	DDR4-3200
Max memory channels		8
Maximum memory bandwidth		190.7 GB/s
Maximum memory size		4 TB
Compatibility
Configurable TDP	225 Watt
Max number of CPUs in a configuration	2	2
Sockets supported	SP3	SP3
Thermal Design Power (TDP)	240 Watt	225 Watt
Peripherals
PCIe configurations	Gen 4, 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™)