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Intel Core i7-5820K vs Intel Core i7-7800X

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Intel Core i7-5820K

The Intel Core i7-5820K operates with 6 cores and 12 CPU threads. It run at 3.60 GHz base 3.40 GHz all cores while the TDP is set at 140 W.The processor is attached to the LGA 2011-3 CPU socket. This version includes 15.00 MB of L3 cache on one chip, supports 4 memory channels to support DDR4-2133 RAM and features 3.0 PCIe Gen 28 lanes. Tjunction keeps below -- degrees C. In particular, Haswell E Architecture is enhanced with 22 nm technology and supports VT-x, VT-x EPT, VT-d. The product was launched on Q3/2014

Intel Core i7-7800X

The Intel Core i7-7800X operates with 6 cores and 12 CPU threads. It run at 4.20 GHz base 3.90 GHz all cores while the TDP is set at 140 W.The processor is attached to the LGA 2066 CPU socket. This version includes 8.00 MB of L3 cache on one chip, supports 4 memory channels to support DDR4-2400 RAM and features 3.0 PCIe Gen 28 lanes. Tjunction keeps below -- degrees C. In particular, Skylake X Architecture is enhanced with 14 nm technology and supports VT-x, VT-x EPT, VT-d. The product was launched on Q2/2017

Intel Core i7-5820K

Intel Core i7-7800X

Intel Core i7-5820K

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Intel Core i7-7800X

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Compare Detail

3.30 GHz	Frequency	3.50 GHz
6	Cores	6
3.60 GHz	Turbo (1 Core)	4.20 GHz
3.40 GHz	Turbo (All Cores)	3.90 GHz
Yes	Hyperthreading	Yes
Yes	Overclocking	Yes
normal	Core Architecture	normal
no iGPU	GPU	no iGPU
No turbo	GPU (Turbo)	No turbo
22 nm	Technology	14 nm
No turbo	GPU (Turbo)	No turbo
	DirectX Version
	Max. displays
DDR4-2133	Memory	DDR4-2400
4	Memory channels	4
	Max memory
No	ECC	No
--	L2 Cache	--
15.00 MB	L3 Cache	8.00 MB
3.0	PCIe version	3.0
28	PCIe lanes	28
22 nm	Technology	14 nm
LGA 2011-3	Socket	LGA 2066
140 W	TDP	140 W
VT-x, VT-x EPT, VT-d	Virtualization	VT-x, VT-x EPT, VT-d
Q3/2014	Release date	Q2/2017
Show more data		Show more data

Cinebench R23 (Single-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.

Intel Core i7-5820K 800 (36%)

Intel Core i7-7800X (0%)

Cinebench R23 (Multi-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.

Intel Core i7-5820K 5,701 (9%)

Intel Core i7-7800X (0%)

Cinebench R20 (Single-Core)

Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.

Intel Core i7-5820K 334 (38%)

Intel Core i7-7800X 364 (44%)

Cinebench R20 (Multi-Core)

Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.

Intel Core i7-5820K 2,302 (9%)

Intel Core i7-7800X 2,812 (11%)

Cinebench R15 (Single-Core)

Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.

Intel Core i7-5820K 145 (42%)

Intel Core i7-7800X 192 (63%)

Cinebench R15 (Multi-Core)

Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.

Intel Core i7-5820K 1,088 (10%)

Intel Core i7-7800X 1,288 (12%)

Geekbench 5, 64bit (Single-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.

Intel Core i7-5820K 929 (41%)

Intel Core i7-7800X 1,121 (53%)

Geekbench 5, 64bit (Multi-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.

Intel Core i7-5820K 5,540 (11%)

Intel Core i7-7800X 6,762 (18%)

Blender 2.81 (bmw27)

Blender is a free 3D graphics software for rendering (creating) 3D bodies, which can also be textured and animated in the software. The Blender benchmark creates predefined scenes and measures the time (s) required for the entire scene. The shorter the time required, the better. We selected bmw27 as the benchmark scene.

Intel Core i7-5820K 331.73 (16%)

Intel Core i7-7800X (0%)

Geekbench 3, 64bit (Single-Core)

Geekbench 3 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.

Intel Core i7-5820K 3,747 (54%)

Intel Core i7-7800X 4,771 (69%)

Geekbench 3, 64bit (Multi-Core)

Geekbench 3 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.

Intel Core i7-5820K 23,056 (24%)

Intel Core i7-7800X 24,166 (25%)

Cinebench R11.5, 64bit (Single-Core)

Cinebench 11.5 is based on the Cinema 4D Suite, a software that is popular to generate forms and other stuff in 3D. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.

Intel Core i7-5820K 1.79 (48%)

Intel Core i7-7800X 2.24 (82%)

Cinebench R11.5, 64bit (Multi-Core)

Cinebench 11.5 is based on the Cinema 4D Suite, a software that is popular to generate forms and other stuff in 3D. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.

Intel Core i7-5820K 11.09 (20%)

Intel Core i7-7800X 14.15 (26%)

Estimated results for PassMark CPU Mark

Some of the CPUs listed below have been benchmarked by CPU-Comparison. However the majority of CPUs have not been tested and the results have been estimated by a CPU-Comparison’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.

Intel Core i7-5820K 13,017 (12%)

Intel Core i7-7800X 14,746 (17%)

Electric Usage Estimate

Average hours of use per day

Average CPU Utilization (0-100%)

Power cost, dollar per kWh

Electric Usage Estimate

Average hours of use per day

Average CPU Utilization (0-100%)

Power cost, dollar per kWh

Intel Core i7-5820K		Intel Core i7-7800X
140 W	Max TDP	140 W
NA	Power consumption per day (kWh)	NA
NA	Running cost per day	NA
NA	Power consumption per year (kWh)	NA
NA	Running cost per year	NA