Xeon W-2255 vs i7-5820K

Primary details

Comparing Core i7-5820K and Xeon W-2255 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1076	516
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	1.07	no data
Market segment	Desktop processor	Server
Power efficiency	4.19	8.08
Architecture codename	Haswell-E (2014)	no data
Release date	1 September 2014 (10 years ago)	1 October 2019 (5 years ago)
Launch price (MSRP)	$410	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i7-5820K and Xeon W-2255 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)	10 (Deca-Core)
Threads	12	20
Base clock speed	3.3 GHz	3.7 GHz
Boost clock speed	3.6 GHz	4.7 GHz
Bus rate	0 GT/s	8 GT/s
L1 cache	64 KB (per core)	no data
L2 cache	256 KB (per core)	no data
L3 cache	15 MB (shared)	19.25 MB
Chip lithography	22 nm	14 nm
Die size	356 mm2	no data
Maximum core temperature	67 °C	62 °C
Number of transistors	2,600 million	no data
64 bit support	+	+
Windows 11 compatibility	-	+
Unlocked multiplier	+	-

Compatibility

Information on Core i7-5820K and Xeon W-2255 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	1
Socket	FCLGA2011	FCLGA2066
Power consumption (TDP)	140 Watt	165 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-5820K and Xeon W-2255. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.2, Intel® AVX2	Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512
AES-NI	+	+
AVX	+	-
Enhanced SpeedStep (EIST)	+	+
Speed Shift	no data	+
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
TSX	+	+
Idle States	+	+
Thermal Monitoring	+	+
Smart Response	+	no data
Demand Based Switching	-	+
PAE	no data	46 Bit
Turbo Boost Max 3.0	no data	+
Deep Learning Boost	-	+

Security technologies

Core i7-5820K and Xeon W-2255 technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-5820K and Xeon W-2255 are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-5820K and Xeon W-2255. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4	DDR4-2933
Maximum memory size	64 GB	1 TB
Max memory channels	4	4
Maximum memory bandwidth	68 GB/s	93.85 GB/s
ECC memory support	-	+

Peripherals

Specifications and connection of peripherals supported by Core i7-5820K and Xeon W-2255.

PCIe version	3.0	3.0
PCI Express lanes	28	48

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	6.20	14.09
Recency	1 September 2014	1 October 2019
Physical cores	6	10
Threads	12	20
Chip lithography	22 nm	14 nm
Power consumption (TDP)	140 Watt	165 Watt

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Should you still have questions on choice between Core i7-5820K and Xeon W-2255, ask them in Comments section, and we shall answer.

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