EPYC 7251 vs FX-8320

Primary details

Comparing FX-8320 and EPYC 7251 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1520	787
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	3.23
Market segment	Desktop processor	Server
Series	no data	AMD EPYC
Architecture codename	Vishera (2012−2015)	Naples (2017−2018)
Release date	23 October 2012 (11 years ago)	29 June 2017 (7 years ago)
Launch price (MSRP)	no data	$574

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

FX-8320 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	8 (Octa-Core)	8 (Octa-Core)
Threads	8	16
Base clock speed	3.5 GHz	2.1 GHz
Boost clock speed	4 GHz	2.9 GHz
Multiplier	no data	21
L1 cache	no data	96K (per core)
L2 cache	8192 KB	512K (per core)
L3 cache	no data	32 MB (shared)
Chip lithography	32 nm	14 nm
Die size	315 mm2	192 mm2
Maximum core temperature	61 °C	no data
Number of transistors	1,200 million	4,800 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	+	+
P0 Vcore voltage	Min: 1.2 V - Max: 1.4 V	no data

Compatibility

Information on FX-8320 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	2 (Multiprocessor)
Socket	AM3+	TR4
Power consumption (TDP)	125 Watt	120 Watt

Technologies and extensions

Technological solutions and additional instructions supported by FX-8320 and EPYC 7251. You'll probably need this information if you require some particular technology.

AES-NI	+	+
FMA	+	-
AVX	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by FX-8320 and EPYC 7251 are enumerated here.

AMD-V

+

+

Memory specs

Types, maximum amount and channel quantity of RAM supported by FX-8320 and EPYC 7251. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR4 Eight-channel
Maximum memory size	no data	2 TiB
Max memory channels	no data	8
Maximum memory bandwidth	no data	153.652 GB/s
ECC memory support	-	+

Peripherals

Specifications and connection of peripherals supported by FX-8320 and EPYC 7251.

PCIe version	n/a	3.0
PCI Express lanes	no data	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.

Pros & cons summary

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Performance score	3.53	9.69
Recency	23 October 2012	29 June 2017
Threads	8	16
Chip lithography	32 nm	14 nm
Power consumption (TDP)	125 Watt	120 Watt

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Should you still have questions on choice between FX-8320 and EPYC 7251, ask them in Comments section, and we shall answer.

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