Ryzen 5 PRO 8645HS vs i9-7940X

Primary details

Comparing Core i9-7940X and Ryzen 5 PRO 8645HS processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	399	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	3.14	no data
Market segment	Desktop processor	Server
Series	Intel Core i9	no data
Power efficiency	9.37	no data
Architecture codename	Skylake (server) (2017−2019)	Hawk Point (2024)
Release date	30 May 2017 (7 years ago)	16 April 2024 (less than a year ago)
Launch price (MSRP)	$1,399	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i9-7940X and Ryzen 5 PRO 8645HS 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	14 (Tetradeca-Core)	6 (Hexa-Core)
Threads	28	12
Base clock speed	3.1 GHz	4.3 GHz
Boost clock speed	4.4 GHz	5 GHz
Bus type	DMI 3.0	no data
Bus rate	4 × 8 GT/s	no data
L1 cache	896 KB	64 KB (per core)
L2 cache	14 MB	1 MB (per core)
L3 cache	19.25 MB (shared)	16 MB (shared)
Chip lithography	14 nm	4 nm
Die size	484 mm2	178 mm2
Maximum core temperature	102 °C	no data
Number of transistors	no data	25,000 million
64 bit support	+	+
Windows 11 compatibility	+	no data
Unlocked multiplier	+	-

Compatibility

Information on Core i9-7940X and Ryzen 5 PRO 8645HS 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)	1
Socket	FCLGA2066	FP7
Power consumption (TDP)	165 Watt	45 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i9-7940X and Ryzen 5 PRO 8645HS. 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	+	-
Turbo Boost Max 3.0	+	no data
Precision Boost 2	no data	+

Security technologies

Core i9-7940X and Ryzen 5 PRO 8645HS technologies aimed at improving security, for example, by protecting against hacks.

EDB

+

no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i9-7940X and Ryzen 5 PRO 8645HS 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 i9-7940X and Ryzen 5 PRO 8645HS. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2666	DDR5
Maximum memory size	128 GB	no data
Max memory channels	4	no data
Maximum memory bandwidth	85.33 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

N/A

AMD Radeon 760M

Peripherals

Specifications and connection of peripherals supported by Core i9-7940X and Ryzen 5 PRO 8645HS.

PCIe version	3.0	4.0
PCI Express lanes	44	20

Pros & cons summary

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Recency	30 May 2017	16 April 2024
Physical cores	14	6
Threads	28	12
Chip lithography	14 nm	4 nm
Power consumption (TDP)	165 Watt	45 Watt

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Should you still have questions on choice between Core i9-7940X and Ryzen 5 PRO 8645HS, ask them in Comments section, and we shall answer.

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