Intel Core i9-9900K vs Intel Core i9-7940X

VS
Intel Core i9-9900K
Intel Core i9-9900K Image
Intel Core i9-7940X
Intel Core i9-7940X Image
Intel Core i9-9900K
Intel Core i9-7940X
Key Differences Key Differences Intel Core i9-9900K Intel Core i9-7940X
Cores 8 14
CPU Threads 16 28
Base Clock Speed 3.6GHz 3.1GHz
Turbo Clock Speed 5GHz 4.4GHz
TDP (THERMAL DESIGN POINT) 95W 165W
Has integrated graphics Yes No
Performance per watt 92.6 Not Known
Performance Performance Intel Core i9-9900K Intel Core i9-7940X
CPU Speed & Cores 8 x 3.6GHz 14 x 3.1GHz
Number of CPU Threads 16 28
L2 Cache Size 2MB 14MB
L3 Cache Size 16MB 19.2MB
Turbo Boost Frequency 5GHz 4.4GHz
L1 Cache Size 512KB 448KB
L2 Core 0.25MB/core 1MB/core
Does it have an unlocked multiplier Yes Yes
L3 Core 2MB/core 1.3MB/core
Uses ARM big.LITTLE tech No No
Clock Multiplier 36 Not Known
Turbo Boost Tech Version 2 3
Uses ARM HMP No No
Features Features Intel Core i9-9900K Intel Core i9-7940X
Has AES Support Yes Yes
Supports CPU Throttling Yes Yes
Supported SSE Version 4.2 Not Known
Has AVX Support Yes Yes
Has MMX Tech Support Yes No
Has F16C Support Yes Yes
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
Supports ARM TrustZone Tech No No
Miscellaneous Miscellaneous Intel Core i9-9900K Intel Core i9-7940X
Height 37.5mm 51mm
Width Size 37.5mm 58.5mm
General info General info Intel Core i9-9900K Intel Core i9-7940X
Has 64-bit Support No Data Found No Data Found
Semiconductor Size 14nm 14nm
GPU Base Clock Speed 350MHz Not Known
TDP (Thermal Design Point) 95W 165W
PCI Express Version 3 3
CPU Temperature 100°C Not Known
DirectX Version Info 12 Not Known
OpenGL Driver Version 4.5 Not Known
GPU Boost Clock Speed 1200MHz Not Known
No. of Supported Displays 3 Not Known
Height 37.5mm 51mm
Width Size 37.5mm 58.5mm
Does it have Integrated Graphics Yes No
Supports Power Optimized L2 Cache No No
Memory Memory Intel Core i9-9900K Intel Core i9-7940X
RAM Memory Speed 2666MHz 2666MHz
Max Memory Bandwidth 41.6GB/s Not Known
Max Memory Channels 2 4
Supported Memory Size 128GB Not Known
Bus Bandwidth 8GT/s Not Known
ECC (Error-Correcting Code) Memory Support No No
DDR Type Memory Version 4 Not Known
Benchmarks Benchmarks Intel Core i9-9900K Intel Core i9-7940X
PassMark Score 18898 Not Known
PassMark Score (Single Thread) 2986 Not Known
Geekbench 5 Score (Multi-Thread) 8795 Not Known
Cinebench R20 Score (Single Thread) 518 Not Known
Cinebench R20 Score (Multi-Thread) 4995 Not Known
Geekbench 5 Score (Single Thread) 1336 Not Known
Blender Score (bmw27) 164.2seconds Not Known
Blender Score (Classroom) 544seconds Not Known
PassMark Score (Overclocked) 20704 Not Known
CPU Performance (Per Watt) 92.6 Not Known

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