Ryzen Threadripper PRO 3975WX vs EPYC 7261

Primary details

Comparing EPYC 7261 and Ryzen Threadripper PRO 3975WX processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	not rated	55
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	17.55
Market segment	Server	Desktop processor
Series	AMD EPYC	AMD Ryzen Threadripper
Architecture codename	Naples (2017−2018)	Matisse (2019−2020)
Release date	14 June 2018 (6 years ago)	14 July 2020 (3 years ago)
Current price	$13.29	$2300

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

EPYC 7261 and Ryzen Threadripper PRO 3975WX 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)	32 (Dotriaconta-Core)
Threads	16	64
Base clock speed	2.5 GHz	3.5 GHz
Boost clock speed	2.9 GHz	4.2 GHz
L1 cache	96K (per core)	64K (per core)
L2 cache	512K (per core)	512K (per core)
L3 cache	32 MB (shared)	128 MB
Chip lithography	14 nm	7 nm
Die size	213 mm2	74 mm2
Maximum core temperature	no data	95 °C
Maximum case temperature (TCase)	81 °C	95 °C
Number of transistors	4,800 million	3,800 million
64 bit support	+	+
Windows 11 compatibility	-	+
Unlocked multiplier	Yes	Yes

Compatibility

Information on EPYC 7261 and Ryzen Threadripper PRO 3975WX 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	SP3	sWRX8
Power consumption (TDP)	170 Watt	280 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC 7261 and Ryzen Threadripper PRO 3975WX. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AES, AVX, AVX2, BMI1, BMI2, SHA, F16C, FMA3, AMD64, EVP, AMD-V, SMAP, SMEP, SMT, Precision Boost 2, XFR 2
AES-NI	+	+
AVX	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by EPYC 7261 and Ryzen Threadripper PRO 3975WX are enumerated here.

AMD-V

+

+

Memory specs

Types, maximum amount and channel quantity of RAM supported by EPYC 7261 and Ryzen Threadripper PRO 3975WX. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2666	DDR4-3200
Maximum memory size	2 TiB	2 TiB
Max memory channels	8	no data
Maximum memory bandwidth	170.671 GB/s	204.8 GB/s
ECC memory support	+	no data

Peripherals

Specifications and connection of peripherals supported by EPYC 7261 and Ryzen Threadripper PRO 3975WX.

PCIe version	3.0	4.0
PCI Express lanes	128	128

Pros & cons summary

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Recency	14 June 2018	14 July 2020
Physical cores	8	32
Threads	16	64
Chip lithography	14 nm	7 nm
Power consumption (TDP)	170 Watt	280 Watt

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Should you still have questions on choice between EPYC 7261 and Ryzen Threadripper PRO 3975WX, ask them in Comments section, and we shall answer.

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