Xeon Silver 4309Y vs i9-7940X

Primary details

Comparing Core i9-7940X and Xeon Silver 4309Y processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	388	620
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	3.30	no data
Market segment	Desktop processor	Server
Series	Intel Core i9	no data
Architecture codename	Skylake (server) (2017−2019)	Ice Lake-SP (2021)
Release date	30 May 2017 (7 years ago)	6 April 2021 (3 years ago)
Launch price (MSRP)	$1,399	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i9-7940X and Xeon Silver 4309Y 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)	8 (Octa-Core)
Threads	28	16
Base clock speed	3.1 GHz	2.8 GHz
Boost clock speed	4.4 GHz	3.6 GHz
Bus type	DMI 3.0	no data
Bus rate	4 × 8 GT/s	no data
L1 cache	896 KB	64K (per core)
L2 cache	14 MB	1 MB (per core)
L3 cache	19.25 MB (shared)	12 MB (shared)
Chip lithography	14 nm	10 nm
Die size	484 mm2	no data
Maximum core temperature	102 °C	no data
Maximum case temperature (TCase)	no data	76 °C
64 bit support	+	+
Windows 11 compatibility	+	+
Unlocked multiplier	+	-

Compatibility

Information on Core i9-7940X and Xeon Silver 4309Y 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	FCLGA4189
Power consumption (TDP)	165 Watt	105 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i9-7940X and Xeon Silver 4309Y. 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	Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512
AES-NI	+	+
AVX	+	+
vPro	no data	+
Enhanced SpeedStep (EIST)	+	+
Speed Shift	no data	+
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
TSX	+	+
Turbo Boost Max 3.0	+	no data
Status	Discontinued	Launched
Deep Learning Boost	-	+

Security technologies

Core i9-7940X and Xeon Silver 4309Y technologies aimed at improving security, for example, by protecting against hacks.

TXT	no data	+
EDB	+	+
SGX	no data	Yes with Intel® SPS

Virtualization technologies

Virtual machine speed-up technologies supported by Core i9-7940X and Xeon Silver 4309Y are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	no data	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i9-7940X and Xeon Silver 4309Y. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2666	DDR4-2667
Maximum memory size	128 GB	6 TB
Max memory channels	4	8
Maximum memory bandwidth	85.33 GB/s	no data
ECC memory support	-	+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

N/A

no data

Peripherals

Specifications and connection of peripherals supported by Core i9-7940X and Xeon Silver 4309Y.

PCIe version	3.0	4.0
PCI Express lanes	44	64

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	16.88	12.39
Recency	30 May 2017	6 April 2021
Physical cores	14	8
Threads	28	16
Chip lithography	14 nm	10 nm
Power consumption (TDP)	165 Watt	105 Watt

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Should you still have questions on choice between Core i9-7940X and Xeon Silver 4309Y, ask them in Comments section, and we shall answer.

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