EPYC 7251 vs Ryzen Threadripper 1950X

Primary details

Comparing Ryzen Threadripper 1950X and EPYC 7251 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	365	813
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	5.06	2.85
Market segment	Desktop processor	Server
Series	AMD Ryzen Threadripper	AMD EPYC
Power efficiency	9.16	7.41
Architecture codename	Zen (2017−2020)	Naples (2017−2018)
Release date	13 July 2017 (7 years ago)	20 June 2017 (7 years ago)
Launch price (MSRP)	$999	$574

Cost-effectiveness evaluation

Performance per price, higher is better.

Ryzen Threadripper 1950X has 78% better value for money than EPYC 7251.

Detailed specifications

Ryzen Threadripper 1950X and EPYC 7251 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)	8 (Octa-Core)
Threads	32	16
Base clock speed	3.4 GHz	2.1 GHz
Boost clock speed	3.4 GHz	2.1 GHz
Bus rate	4 × 8 GT/s	no data
Multiplier	34	21
L1 cache	1.5 MB	768 KB
L2 cache	8 MB	4 MB
L3 cache	32 MB	32 MB (shared)
Chip lithography	14 nm	14 nm
Die size	213 mm2	213 mm2
Maximum core temperature	68 °C	no data
Number of transistors	9600 Million	19200 Million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	+	+

Compatibility

Information on Ryzen Threadripper 1950X and EPYC 7251 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	1 (Uniprocessor)	2 (Multiprocessor)
Socket	SP3r2	TR4
Power consumption (TDP)	180 Watt	120 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen Threadripper 1950X and EPYC 7251. You'll probably need this information if you require some particular technology.

Instruction set extensions	SSE4.2, SSE4A, AMD-V, AES, AVX2, FMA3, SHA	no data
AES-NI	+	+
AVX	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen Threadripper 1950X and EPYC 7251 are enumerated here.

AMD-V

+

+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen Threadripper 1950X and EPYC 7251. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4 Quad-channel	DDR4 Eight-channel
Maximum memory size	2 TiB	2 TiB
Max memory channels	4	8
Maximum memory bandwidth	85.33 GB/s	153.652 GB/s
ECC memory support	+	+

Peripherals

Specifications and connection of peripherals supported by Ryzen Threadripper 1950X and EPYC 7251.

PCIe version	3.0	3.0
PCI Express lanes	60	128

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	17.43	9.40
Physical cores	16	8
Threads	32	16
Power consumption (TDP)	180 Watt	120 Watt

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Should you still have questions on choice between Ryzen Threadripper 1950X and EPYC 7251, ask them in Comments section, and we shall answer.

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