FX-770K vs EPYC 7451

Primary details

Comparing processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	586	2298
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.88	no data
Market segment	Server	Desktop processor
Series	AMD EPYC	no data
Power efficiency	3.57	1.17
Designer	AMD	AMD
Manufacturer	no data	GlobalFoundries
Architecture codename	Naples (2017−2018)	Kaveri (2014−2015)
Release date	20 June 2017 (8 years ago)	December 2014 (11 years ago)
Launch price (MSRP)	$2,400	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Performance to price scatter graph

Currently popular graphics cards are shown for comparison.

Detailed specifications

Basic parameters of EPYC 7451 and FX-770K: 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	24 (Tetracosa-Core)	4 (Quad-Core)
Threads	48	4
Base clock speed	2.3 GHz	3.5 GHz
Boost clock speed	2.3 GHz	3.9 GHz
Multiplier	23	no data
L1 cache	2.25 MB	256K
L2 cache	12 MB	4 MB
L3 cache	64 MB (shared)	no data
Chip lithography	14 nm	28 nm
Die size	213 mm2	245 mm2
Maximum case temperature (TCase)	no data	72 °C
Number of transistors	19200 Million	2,411 million
64 bit support	+	+
Windows 11 compatibility	-	no data
Unlocked multiplier	+	+

Compatibility

Information on EPYC 7451 and FX-770K 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	FM2+
Power consumption (TDP)	180 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC 7451 and FX-770K. 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 EPYC 7451 and FX-770K are enumerated here.

AMD-V

+

+

Memory specs

Types, maximum amount and channel quantity of RAM supported by EPYC 7451 and FX-770K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4 Eight-channel	DDR3-2133
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	+	-

Peripherals

Specifications and connection of peripherals supported by EPYC 7451 and FX-770K.

PCIe version	3.0	3.0
PCI Express lanes	128	16

Synthetic benchmarks

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.

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Pros & cons summary

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Performance score	15.40	1.84
Physical cores	24	4
Threads	48	4
Chip lithography	14 nm	28 nm
Power consumption (TDP)	180 Watt	65 Watt