EPYC 7543 vs i7-7800X

Primary details

Comparing Core i7-7800X and EPYC 7543 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	922	75
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	3.37	7.89
Market segment	Desktop processor	Server
Series	Intel Core i7	AMD EPYC
Power efficiency	5.47	16.13
Architecture codename	Skylake (server) (2017−2019)	Milan (2021−2023)
Release date	30 May 2017 (7 years ago)	12 January 2021 (3 years ago)
Launch price (MSRP)	$383	$3,761

Cost-effectiveness evaluation

Performance per price, higher is better.

EPYC 7543 has 134% better value for money than i7-7800X.

Detailed specifications

Core i7-7800X and EPYC 7543 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	6 (Hexa-Core)	32 (Dotriaconta-Core)
Threads	12	64
Base clock speed	3.5 GHz	2.8 GHz
Boost clock speed	4 GHz	3.7 GHz
Bus type	DMI 3.0	no data
Bus rate	4 × 8 GT/s	no data
Multiplier	35	28
L1 cache	384 KB	2 MB
L2 cache	6 MB	16 MB
L3 cache	8.25 MB (shared)	256 MB (shared)
Chip lithography	14 nm	7 nm+
Die size	no data	8x 81 mm2
Maximum core temperature	100 °C	no data
Maximum case temperature (TCase)	72 °C	no data
Number of transistors	no data	33,200 million
64 bit support	+	+
Windows 11 compatibility	+	+
Unlocked multiplier	+	-

Compatibility

Information on Core i7-7800X and EPYC 7543 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
Socket	FCLGA2066	SP3
Power consumption (TDP)	140 Watt	225 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-7800X and EPYC 7543. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512	no data
AES-NI	+	+
AVX	+	+
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	2.0	no data
Hyper-Threading Technology	+	no data
TSX	+	-

Security technologies

Core i7-7800X and EPYC 7543 technologies aimed at improving security, for example, by protecting against hacks.

EDB

+

no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-7800X and EPYC 7543 are enumerated here.

AMD-V	-	+
VT-d	+	no data
VT-x	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-7800X and EPYC 7543. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2400	DDR4-3200
Maximum memory size	128 GB	4 TiB
Max memory channels	4	no data
Maximum memory bandwidth	85.33 GB/s	204.795 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

N/A

N/A

Peripherals

Specifications and connection of peripherals supported by Core i7-7800X and EPYC 7543.

PCIe version	3.0	4.0
PCI Express lanes	28	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	8.40	39.79
Recency	30 May 2017	12 January 2021
Physical cores	6	32
Threads	12	64
Chip lithography	14 nm	7 nm
Power consumption (TDP)	140 Watt	225 Watt

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Should you still have questions on choice between Core i7-7800X and EPYC 7543, ask them in Comments section, and we shall answer.

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