Xeon E3-1220 v6 vs i7-5820K

Primary details

Comparing Core i7-5820K and Xeon E3-1220 v6 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1072	1525
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	1.10	4.73
Market segment	Desktop processor	Server
Series	no data	Intel Xeon E3
Power efficiency	4.19	4.60
Architecture codename	Haswell-E (2014)	Kaby Lake (2016−2019)
Release date	1 September 2014 (10 years ago)	28 March 2017 (7 years ago)
Launch price (MSRP)	$410	$193

Cost-effectiveness evaluation

Performance per price, higher is better.

Xeon E3-1220 v6 has 330% better value for money than i7-5820K.

Detailed specifications

Core i7-5820K and Xeon E3-1220 v6 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)	4 (Quad-Core)
Threads	12	4
Base clock speed	3.3 GHz	3 GHz
Boost clock speed	3.6 GHz	3.5 GHz
Bus type	no data	DMI 3.0
Bus rate	0 GT/s	8 GT/s
Multiplier	no data	30
L1 cache	64 KB (per core)	256 KB
L2 cache	256 KB (per core)	1 MB
L3 cache	15 MB (shared)	8 MB
Chip lithography	22 nm	14 nm
Die size	356 mm2	no data
Maximum core temperature	67 °C	no data
Number of transistors	2,600 million	no data
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	+	-

Compatibility

Information on Core i7-5820K and Xeon E3-1220 v6 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 (Uniprocessor)
Socket	FCLGA2011	FCLGA1151
Power consumption (TDP)	140 Watt	72 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-5820K and Xeon E3-1220 v6. You'll probably need this information if you require some particular technology.

Instruction set extensions	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	+	+
Smart Response	+	no data
Demand Based Switching	-	no data

Security technologies

Core i7-5820K and Xeon E3-1220 v6 technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-5820K and Xeon E3-1220 v6 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 E3-1220 v6. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4	DDR4-2400, DDR3L-1866
Maximum memory size	64 GB	64 GB
Max memory channels	4	2
Maximum memory bandwidth	68 GB/s	38.397 GB/s
ECC memory support	-	+

Graphics image quality

Maximum display resolutions supported by Core i7-5820K and Xeon E3-1220 v6 integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4	no data	N/A
Max resolution over eDP	no data	N/A
Max resolution over DisplayPort	no data	N/A
Max resolution over VGA	no data	N/A

Graphics API support

APIs supported by Core i7-5820K and Xeon E3-1220 v6 integrated GPUs, sometimes API versions are included.

DirectX	no data	N/A
OpenGL	no data	N/A

Peripherals

Specifications and connection of peripherals supported by Core i7-5820K and Xeon E3-1220 v6.

PCIe version	3.0	3.0
PCI Express lanes	28	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	6.43	3.63
Recency	1 September 2014	28 March 2017
Physical cores	6	4
Threads	12	4
Chip lithography	22 nm	14 nm
Power consumption (TDP)	140 Watt	72 Watt

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Should you still have questions on choice between Core i7-5820K and Xeon E3-1220 v6, ask them in Comments section, and we shall answer.

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