Ryzen 9 7940HX vs EPYC 7663

Primary details

Comparing EPYC 7663 and Ryzen 9 7940HX processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	29	108
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	3.92	no data
Market segment	Server	Laptop
Series	AMD EPYC	AMD Dragon Range (Zen 4, Ryzen 7045)
Architecture codename	Milan (2021−2023)	Dragon Range-HX (Zen 4) (2023−2024)
Release date	12 January 2021 (3 years ago)	17 January 2024 (less than a year ago)
Launch price (MSRP)	$6,366	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

EPYC 7663 and Ryzen 9 7940HX 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	56 (Hexapentaconta-Core)	16 (Hexadeca-Core)
Threads	112	32
Base clock speed	2 GHz	2.4 GHz
Boost clock speed	3.5 GHz	5.2 GHz
Multiplier	20	no data
L1 cache	3584 KB	1 MB
L2 cache	28 MB	16 MB
L3 cache	256 MB (shared)	64 MB
Chip lithography	7 nm+	5 nm
Die size	8x 81 mm2	no data
Maximum core temperature	no data	100 °C
Number of transistors	33,200 million	9900 Million
64 bit support	+	+
Windows 11 compatibility	+	no data
Unlocked multiplier	+	-

Compatibility

Information on EPYC 7663 and Ryzen 9 7940HX 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	no data
Socket	SP3	FL1
Power consumption (TDP)	240 Watt	55 Watt

Technologies and extensions

Technological solutions and additional instructions supported by EPYC 7663 and Ryzen 9 7940HX. 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, AVX, AVX2, AVX-512, BMI2, ABM, FMA, ADX, SMEP, SMAP, SMT, CPB, AES-NI, RDRAND, RDSEED, SHA, SME
AES-NI	+	+
FMA	-	+
AVX	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by EPYC 7663 and Ryzen 9 7940HX are enumerated here.

AMD-V

+

-

Memory specs

Types, maximum amount and channel quantity of RAM supported by EPYC 7663 and Ryzen 9 7940HX. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-3200	DDR5
Maximum memory size	4 TiB	no data
Maximum memory bandwidth	204.795 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

N/A

AMD Radeon 610M

Peripherals

Specifications and connection of peripherals supported by EPYC 7663 and Ryzen 9 7940HX.

PCIe version	4.0	no data
PCI Express lanes	128	no data

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	53.07	34.79
Recency	12 January 2021	17 January 2024
Physical cores	56	16
Threads	112	32
Chip lithography	7 nm	5 nm
Power consumption (TDP)	240 Watt	55 Watt

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Should you still have questions on choice between EPYC 7663 and Ryzen 9 7940HX, ask them in Comments section, and we shall answer.

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