Intel Core i7-8700K vs Intel Core i7-5820K

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Intel Core i7-8700K
Intel Core i7-8700K Image
Intel Core i7-5820K
Intel Core i7-5820K Image
Intel Core i7-8700K
Intel Core i7-5820K
Key Differences Key Differences Intel Core i7-8700K Intel Core i7-5820K
Cores 6 6
CPU Threads 12 12
Base Clock Speed 3.7GHz 3.3GHz
Turbo Clock Speed 4.7GHz 3.6GHz
TDP (THERMAL DESIGN POINT) 95W 140W
Has integrated graphics Yes No
Performance per watt Not Known 25.0
Performance Performance Intel Core i7-8700K Intel Core i7-5820K
CPU Speed & Cores 6 x 3.7GHz 6 x 3.3GHz
Number of CPU Threads 12 12
L2 Cache Size 1.5MB 1.5MB
L3 Cache Size 12MB 15MB
Turbo Boost Frequency 4.7GHz 3.6GHz
L1 Cache Size 384KB 192KB
L2 Core 0.25MB/core 0.25MB/core
Does it have an unlocked multiplier Yes Yes
L3 Core 2MB/core 2.5MB/core
Clock Multiplier 37 35
Turbo Boost Tech Version 2 Not Known
Uses ARM big.LITTLE tech No No
Uses ARM HMP No No
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Features Features Intel Core i7-8700K Intel Core i7-5820K
Has AES Support Yes Yes
Supports CPU Throttling Yes Yes
Supported SSE Version 4.2 4.2
Has AVX Support Yes Yes
Has MMX Tech Support Yes Yes
Has F16C Support Yes Yes
Supports ARM TrustZone Tech No No
Has FMA4 Instructions Support No No
Has Multithreading Tech Support Yes Yes
Has NX Processor Bit Support Yes Yes
Has FMA3 Instructions Support Yes Yes
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Miscellaneous Miscellaneous Intel Core i7-8700K Intel Core i7-5820K
Height 37.5mm 52.5mm
Width Size 37.5mm 45mm
General info General info Intel Core i7-8700K Intel Core i7-5820K
Has 64-bit Support Yes Yes
Semiconductor Size 14nm 22nm
GPU Base Clock Speed 350MHz Not Known
TDP (Thermal Design Point) 95W 140W
PCI Express Version 3 3
CPU Temperature 100°C 66.8°C
DirectX Version Info 12 Not Known
OpenGL Driver Version 4.5 4
GPU Boost Clock Speed 1200MHz Not Known
No. of Supported Displays 3 Not Known
Height 37.5mm 52.5mm
Width Size 37.5mm 45mm
Does it have Integrated Graphics Yes No
Transistor Count Not Known 2600 million
Supports Power Optimized L2 Cache No No
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Memory Memory Intel Core i7-8700K Intel Core i7-5820K
RAM Memory Speed 2666MHz 2133MHz
Max Memory Bandwidth 42.7GB/s 68GB/s
Max Memory Channels 2 4
Supported Memory Size 64GB 64GB
Bus Bandwidth 8GT/s 5GT/s
ECC (Error-Correcting Code) Memory Support No No
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Benchmarks Benchmarks Intel Core i7-8700K Intel Core i7-5820K
PassMark Score 16270 12926
PassMark Score (Single Thread) 2728 1979
PassMark Score (Overclocked) Not Known 15269
CPU Performance (Per Watt) Not Known 25.0
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