Xeon E3-1585 v5 vs i7-6700K

Primary details

Comparing Core i7-6700K and Xeon E3-1585 v5 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1133	1169
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	1.09	2.02
Market segment	Desktop processor	Server
Series	Intel Core i7 (Desktop)	Intel Xeon E3
Power efficiency	5.85	7.70
Architecture codename	Skylake (2015−2016)	Skylake-H (2015−2016)
Release date	1 September 2015 (9 years ago)	31 May 2016 (8 years ago)
Launch price (MSRP)	$339	$556

Cost-effectiveness evaluation

Performance per price, higher is better.

Xeon E3-1585 v5 has 85% better value for money than i7-6700K.

Detailed specifications

Core i7-6700K and Xeon E3-1585 v5 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	4 (Quad-Core)	4 (Quad-Core)
Threads	8	8
Base clock speed	4 GHz	3.5 GHz
Boost clock speed	4.2 GHz	3.9 GHz
Bus type	DMI 3.0	DMI 3.0
Bus rate	4 × 8 GT/s	4 × 8 GT/s
Multiplier	40	35
L1 cache	256 KB	64 KB (per core)
L2 cache	1 MB	256 KB (per core)
L3 cache	8 MB (shared)	8 MB (shared)
Chip lithography	14 nm	14 nm
Die size	122 mm2	171 mm2
Maximum core temperature	no data	100 °C
Maximum case temperature (TCase)	64 °C	no data
Number of transistors	1750 Million	2,300 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	+	-

Compatibility

Information on Core i7-6700K and Xeon E3-1585 v5 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	FCLGA1151	FCBGA1440
Power consumption (TDP)	91 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-6700K and Xeon E3-1585 v5. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	+	+
AVX	+	+
vPro	+	+
Enhanced SpeedStep (EIST)	+	+
eDRAM	no data	128 MB
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
TSX	+	+
Idle States	+	+
Thermal Monitoring	+	-
FDI	no data	+

Security technologies

Core i7-6700K and Xeon E3-1585 v5 technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	+
EDB	+	+
Secure Key	+	no data
MPX	+	-
Identity Protection	+	-
SGX	Yes with Intel® ME	no data
OS Guard	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-6700K and Xeon E3-1585 v5 are enumerated here.

AMD-V	+	-
VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-6700K and Xeon E3-1585 v5. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3, DDR4	DDR3L,LPDDR3 1600 MHz, DDR4 2133 MHz at 1.2V
Maximum memory size	64 GB	64 GB
Max memory channels	2	2
Maximum memory bandwidth	34.134 GB/s	34.134 GB/s
ECC memory support	-	+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card Compare	Intel HD Graphics 530	Intel Iris Pro Graphics P580
Max video memory	64 GB	64 GB
Quick Sync Video	+	+
Clear Video	+	+
Clear Video HD	+	no data
Graphics max frequency	1.15 GHz	1.15 GHz
Execution Units	no data	72
InTru 3D	+	no data

Graphics interfaces

Available interfaces and connections of Core i7-6700K and Xeon E3-1585 v5 integrated GPUs.

Number of displays supported	3	3
eDP	+	no data
DisplayPort	+	-
HDMI	+	-
DVI	+	no data

Graphics image quality

Maximum display resolutions supported by Core i7-6700K and Xeon E3-1585 v5 integrated GPUs, including resolutions over different interfaces.

4K resolution support	+	no data
Max resolution over HDMI 1.4	4096x2304@24Hz	no data
Max resolution over eDP	4096x2304@60Hz	no data
Max resolution over DisplayPort	4096x2304@60Hz	no data
Max resolution over VGA	N/A	no data

Graphics API support

APIs supported by Core i7-6700K and Xeon E3-1585 v5 integrated GPUs, sometimes API versions are included.

DirectX	12	no data
OpenGL	4.5	no data

Peripherals

Specifications and connection of peripherals supported by Core i7-6700K and Xeon E3-1585 v5.

PCIe version	3.0	3.0
PCI Express lanes	16	16

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	5.84	5.49
Integrated graphics card	2.59	5.23
Recency	1 September 2015	31 May 2016
Power consumption (TDP)	91 Watt	65 Watt

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Should you still have questions on choice between Core i7-6700K and Xeon E3-1585 v5, ask them in Comments section, and we shall answer.

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