i7-7820X vs Xeon W-2155

Primary details

Comparing Xeon W-2155 and Core i7-7820X processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	559	714
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	7.62	3.29
Market segment	Server	Desktop processor
Series	Intel Xeon W	Intel Core i7
Power efficiency	8.97	7.30
Architecture codename	Skylake (server) (2017−2019)	Skylake (server) (2017−2019)
Release date	29 August 2017 (7 years ago)	30 May 2017 (7 years ago)
Launch price (MSRP)	$1,440	$599

Cost-effectiveness evaluation

Performance per price, higher is better.

Xeon W-2155 has 132% better value for money than i7-7820X.

Detailed specifications

Xeon W-2155 and Core i7-7820X 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	10 (Deca-Core)	8 (Octa-Core)
Threads	20	16
Base clock speed	3.3 GHz	3.6 GHz
Boost clock speed	4.5 GHz	4.5 GHz
Bus type	DMI 3.0	DMI 3.0
Bus rate	4 × 8 GT/s	4 × 8 GT/s
Multiplier	33	36
L1 cache	640 KB	512 KB
L2 cache	10 MB	8 MB
L3 cache	13.75 MB (shared)	11 MB (shared)
Chip lithography	14 nm	14 nm
Die size	484 mm2	no data
Maximum core temperature	no data	99 °C
Maximum case temperature (TCase)	68 °C	72 °C
64 bit support	+	+
Windows 11 compatibility	+	+
Unlocked multiplier	-	+

Compatibility

Information on Xeon W-2155 and Core i7-7820X 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 (Uniprocessor)
Socket	FCLGA2066	FCLGA2066
Power consumption (TDP)	140 Watt	140 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon W-2155 and Core i7-7820X. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512	Intel® SSE4.1, Intel® SSE4.2, 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	+	+
Idle States	+	no data
Thermal Monitoring	+	-
Flex Memory Access	-	no data
Demand Based Switching	+	no data
PAE	46 Bit	no data
Turbo Boost Max 3.0	-	+

Security technologies

Xeon W-2155 and Core i7-7820X technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	no data
EDB	+	+
Secure Key	+	no data
MPX	+	-
Identity Protection	+	-
SGX	-	no data
OS Guard	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon W-2155 and Core i7-7820X are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon W-2155 and Core i7-7820X. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-1600, DDR4-1866, DDR4-2133, DDR4-2400, DDR4-2666	DDR4-2666
Maximum memory size	512 GB	128 GB
Max memory channels	4	4
Maximum memory bandwidth	85.33 GB/s	85.33 GB/s
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

N/A

Peripherals

Specifications and connection of peripherals supported by Xeon W-2155 and Core i7-7820X.

PCIe version	3.0	3.0
PCI Express lanes	48	28

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	13.52	11.01
Recency	29 August 2017	30 May 2017
Physical cores	10	8
Threads	20	16

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Should you still have questions on choice between Xeon W-2155 and Core i7-7820X, ask them in Comments section, and we shall answer.

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