Ryzen Threadripper 2950X vs EPYC 7251

Primary details

Comparing EPYC 7251 and Ryzen Threadripper 2950X processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	801	312
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	3.06	8.68
Market segment	Server	Desktop processor
Series	AMD EPYC	AMD Ryzen Threadripper
Power efficiency	7.42	9.75
Architecture codename	Naples (2017−2018)	ZEN+ (2018−2019)
Release date	29 June 2017 (7 years ago)	6 August 2018 (6 years ago)
Launch price (MSRP)	$574	$899

Cost-effectiveness evaluation

Performance per price, higher is better.

Ryzen Threadripper 2950X has 184% better value for money than EPYC 7251.

Detailed specifications

EPYC 7251 and Ryzen Threadripper 2950X 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	8 (Octa-Core)	16 (Hexadeca-Core)
Threads	16	32
Base clock speed	2.1 GHz	3.5 GHz
Boost clock speed	2.9 GHz	4.4 GHz
Bus rate	no data	4 × 8 GT/s
Multiplier	21	35
L1 cache	96K (per core)	1.5 MB
L2 cache	512K (per core)	8 MB
L3 cache	32 MB (shared)	32 MB
Chip lithography	14 nm	12 nm
Die size	192 mm2	213 mm2
Number of transistors	4,800 million	9600 Million
64 bit support	+	+
Windows 11 compatibility	-	+
Unlocked multiplier	+	+

Compatibility

Information on EPYC 7251 and Ryzen Threadripper 2950X 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 (Uniprocessor)
Socket	TR4	Socket TR4
Power consumption (TDP)	120 Watt	180 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC 7251 and Ryzen Threadripper 2950X. You'll probably need this information if you require some particular technology.

AES-NI	+	+
AVX	+	+
Precision Boost 2	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by EPYC 7251 and Ryzen Threadripper 2950X are enumerated here.

AMD-V

+

+

Memory specs

Types, maximum amount and channel quantity of RAM supported by EPYC 7251 and Ryzen Threadripper 2950X. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4 Eight-channel	DDR4 Quad-channel
Maximum memory size	2 TiB	2 TiB
Max memory channels	8	4
Maximum memory bandwidth	153.652 GB/s	93.867 GB/s
ECC memory support	+	+

Peripherals

Specifications and connection of peripherals supported by EPYC 7251 and Ryzen Threadripper 2950X.

PCIe version	3.0	no data
PCI Express lanes	128	no data

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	9.76	19.24
Recency	29 June 2017	6 August 2018
Physical cores	8	16
Threads	16	32
Chip lithography	14 nm	12 nm
Power consumption (TDP)	120 Watt	180 Watt

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Should you still have questions on choice between EPYC 7251 and Ryzen Threadripper 2950X, ask them in Comments section, and we shall answer.

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