Xeon E3-1275L v3 vs i7-6700K

Primary details

Comparing Core i7-6700K and Xeon E3-1275L v3 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1130	1420
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	1.13	no data
Market segment	Desktop processor	Server
Series	Intel Core i7 (Desktop)	no data
Power efficiency	5.84	8.33
Architecture codename	Skylake (2015−2016)	no data
Release date	1 September 2015 (9 years ago)	1 April 2014 (10 years ago)
Launch price (MSRP)	$339	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i7-6700K and Xeon E3-1275L v3 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	2.7 GHz
Boost clock speed	4.2 GHz	3.9 GHz
Bus type	DMI 3.0	no data
Bus rate	4 × 8 GT/s	5 GT/s
Multiplier	40	no data
L1 cache	256 KB	no data
L2 cache	1 MB	no data
L3 cache	8 MB (shared)	8 MB Intel® Smart Cache
Chip lithography	14 nm	22 nm
Die size	122 mm2	no data
Maximum case temperature (TCase)	64 °C	no data
Number of transistors	1750 Million	no data
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	+	-

Compatibility

Information on Core i7-6700K and Xeon E3-1275L v3 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	FCLGA1151	FCLGA1150
Power consumption (TDP)	91 Watt	45 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-6700K and Xeon E3-1275L v3. 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	+	no data
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
TSX	+	+
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	no data	+
SIPP	-	+
FDI	no data	+
Fast Memory Access	no data	+

Security technologies

Core i7-6700K and Xeon E3-1275L v3 technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-6700K and Xeon E3-1275L v3 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 E3-1275L v3. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3, DDR4	DDR3-1333, DDR3-1600
Maximum memory size	64 GB	32 GB
Max memory channels	2	2
Maximum memory bandwidth	34.134 GB/s	25.6 GB/s
ECC memory support	-	+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel HD Graphics 530	Intel® HD Graphics for 4th Generation Intel® Processors
Max video memory	64 GB	1.7 GB
Quick Sync Video	+	+
Clear Video	+	no data
Clear Video HD	+	+
Graphics max frequency	1.15 GHz	1.2 GHz
Execution Units	no data	10
InTru 3D	+	+

Graphics interfaces

Available interfaces and connections of Core i7-6700K and Xeon E3-1275L v3 integrated GPUs.

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

Graphics image quality

Maximum display resolutions supported by Core i7-6700K and Xeon E3-1275L v3 integrated GPUs, including resolutions over different interfaces.

4K resolution support	+	no data
Max resolution over HDMI 1.4	4096x2304@24Hz	3840x2160@60Hz
Max resolution over eDP	4096x2304@60Hz	no data
Max resolution over DisplayPort	4096x2304@60Hz	3840x2160@60Hz
Max resolution over VGA	N/A	2880x1800@60Hz

Graphics API support

APIs supported by Core i7-6700K and Xeon E3-1275L v3 integrated GPUs, sometimes API versions are included.

DirectX	12	11.2
OpenGL	4.5	4.3

Peripherals

Specifications and connection of peripherals supported by Core i7-6700K and Xeon E3-1275L v3.

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	5.83	4.11
Recency	1 September 2015	1 April 2014
Chip lithography	14 nm	22 nm
Power consumption (TDP)	91 Watt	45 Watt

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Should you still have questions on choice between Core i7-6700K and Xeon E3-1275L v3, ask them in Comments section, and we shall answer.

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