AMD EPYC 7663 vs AMD Ryzen 9 PRO 7945

Comparative analysis of AMD EPYC 7663 and AMD Ryzen 9 PRO 7945 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, Peripherals. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark.

AMD EPYC 7663

AMD Ryzen 9 PRO 7945

Differences

Reasons to consider the AMD EPYC 7663

44 more cores, run more applications at once: 56 vs 12
88 more threads: 112 vs 24
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
4194304x more L3 cache, more data can be stored in the L3 cache for quick access later
Around 87% better performance in PassMark - CPU mark: 82087 vs 43973

Specifications (specs)
Number of cores	56 vs 12
Number of threads	112 vs 24
L1 cache	64 KB (per core) vs 64K (per core)
L2 cache	512 KB (per core) vs 1MB (per core)
L3 cache	256 MB (shared) vs 64MB (shared)
Max number of CPUs in a configuration	2 vs 1
Benchmarks
PassMark - CPU mark	82087 vs 43973

Reasons to consider the AMD Ryzen 9 PRO 7945

CPU is newer: launch date 2 year(s) 2 month(s) later
Around 54% higher clock speed: 5.4 GHz vs 3.5 GHz
A newer manufacturing process allows for a more powerful, yet cooler running processor: 5 nm vs 7 nm
3.7x lower typical power consumption: 65 Watt vs 240 Watt
Around 60% better performance in PassMark - Single thread mark: 4180 vs 2606

Specifications (specs)
Launch date	13 Jun 2023 vs 15 Mar 2021
Maximum frequency	5.4 GHz vs 3.5 GHz
Manufacturing process technology	5 nm vs 7 nm
Thermal Design Power (TDP)	65 Watt vs 240 Watt
Benchmarks
PassMark - Single thread mark	4180 vs 2606

Compare benchmarks

CPU 1: AMD EPYC 7663
CPU 2: AMD Ryzen 9 PRO 7945

PassMark - Single thread mark

CPU 1

CPU 2

2606

4180

PassMark - CPU mark

CPU 1

CPU 2

82087

43973

Name	AMD EPYC 7663	AMD Ryzen 9 PRO 7945
PassMark - Single thread mark	2606	4180
PassMark - CPU mark	82087	43973

Compare specifications (specs)

	AMD EPYC 7663	AMD Ryzen 9 PRO 7945
Essentials
Launch date	15 Mar 2021	13 Jun 2023
Launch price (MSRP)	$6366
Place in performance rating	117	90
Performance
Base frequency	2000 MHz	3.7 GHz
Die size	8x 81 mm²	2x 71 mm²
L1 cache	64 KB (per core)	64K (per core)
L2 cache	512 KB (per core)	1MB (per core)
L3 cache	256 MB (shared)	64MB (shared)
Manufacturing process technology	7 nm	5 nm
Maximum frequency	3.5 GHz	5.4 GHz
Number of cores	56	12
Number of threads	112	24
Transistor count	33,200 million	13,140 million
Unlocked
Maximum case temperature (TCase)		47°C
Maximum core temperature		95°C
Memory
ECC memory support
Supported memory types	DDR4	DDR5-5200 MHz, Dual-channel
Compatibility
Configurable TDP	225 Watt
Max number of CPUs in a configuration	2	1
Sockets supported	SP3	AM5
Thermal Design Power (TDP)	240 Watt	65 Watt
Peripherals
PCIe configurations	Gen 4, 128 Lanes, (CPU only)	Gen 5, 24 Lanes, (CPU only)