Ryzen 9 7950X vs EPYC 7281

Primary details

Comparing EPYC 7281 and Ryzen 9 7950X processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	540	65
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	5.01	no data
Market segment	Server	Desktop processor
Series	AMD EPYC	no data
Power efficiency	7.58	21.98
Architecture codename	Naples (2017−2018)	Raphael (Zen 4) (2022)
Release date	20 June 2017 (7 years ago)	27 September 2022 (2 years ago)
Launch price (MSRP)	$650	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

EPYC 7281 and Ryzen 9 7950X basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores	16 (Hexadeca-Core)	16 (Hexadeca-Core)
Threads	32	32
Base clock speed	2.1 GHz	4.5 GHz
Boost clock speed	2.1 GHz	5.7 GHz
Multiplier	21	no data
L1 cache	1.5 MB	64K (per core)
L2 cache	8 MB	1 MB (per core)
L3 cache	32 MB (shared)	64 MB (shared)
Chip lithography	14 nm	5 nm
Die size	213 mm2	CCD = 2x 70 sq. mm, I/O = 122 mm2
Maximum core temperature	no data	95 °C
Maximum case temperature (TCase)	no data	47 °C
Number of transistors	19200 Million	13140 Million
64 bit support	+	+
Windows 11 compatibility	-	+
Unlocked multiplier	+	+

Compatibility

Information on EPYC 7281 and Ryzen 9 7950X compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration	2 (Multiprocessor)	1
Socket	TR4	AM5
Power consumption (TDP)	155 W, 170 Watt	170 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC 7281 and Ryzen 9 7950X. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	CCD = 5 nm, I/O = 6 nm, 0.650 - 1.475 V
AES-NI	+	+
AVX	+	+
Precision Boost 2	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by EPYC 7281 and Ryzen 9 7950X are enumerated here.

AMD-V

+

+

Memory specs

Types, maximum amount and channel quantity of RAM supported by EPYC 7281 and Ryzen 9 7950X. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4 Eight-channel	DDR5-5200
Maximum memory size	2 TiB	no data
Max memory channels	8	no data
Maximum memory bandwidth	170.671 GB/s	no data
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

AMD Radeon Graphics (Ryzen 7000)

Peripherals

Specifications and connection of peripherals supported by EPYC 7281 and Ryzen 9 7950X.

PCIe version	3.0	5.0
PCI Express lanes	128	24

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

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Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

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Pros & cons summary

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Performance score	14.13	40.98
Recency	20 June 2017	27 September 2022
Chip lithography	14 nm	5 nm
Power consumption (TDP)	155 Watt	170 Watt

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Should you still have questions on choice between EPYC 7281 and Ryzen 9 7950X, ask them in Comments section, and we shall answer.

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