Intel Core i9-9940X vs Intel Core i5-6400

VS
Intel Core i9-9940X
Intel Core i9-9940X Image
Intel Core i5-6400
Intel Core i5-6400 Image
Intel Core i9-9940X
Intel Core i5-6400
Key Differences Key Differences Intel Core i9-9940X Intel Core i5-6400
Cores 14 4
CPU Threads 28 4
Base Clock Speed 3.3GHz 2.7GHz
Turbo Clock Speed 4.4GHz 3.3GHz
TDP (THERMAL DESIGN POINT) 165W 65W
Has integrated graphics No Yes
Performance per watt 83.2 236.8
Performance Performance Intel Core i9-9940X Intel Core i5-6400
CPU Speed & Cores 14 x 3.3GHz 4 x 2.7GHz
Number of CPU Threads 28 4
L2 Cache Size 14MB 1MB
L3 Cache Size 19.25MB 6MB
Turbo Boost Frequency 4.4GHz 3.3GHz
L1 Cache Size 896KB 128KB
L2 Core 1MB/core 0.2MB/core
L3 Core 1.38MB/core 1.5MB/core
Clock Multiplier 33 27
Turbo Boost Tech Version 2 Not Known
Does it have an unlocked multiplier No No
Uses ARM big.LITTLE tech No No
Uses ARM HMP No No
Features Features Intel Core i9-9940X Intel Core i5-6400
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
Has FMA4 Instructions Support No No
Has Multithreading Tech Support Yes No
Has NX Processor Bit Support Yes Yes
Has FMA3 Instructions Support Yes Yes
Supports ARM TrustZone Tech No No
Miscellaneous Miscellaneous Intel Core i9-9940X Intel Core i5-6400
Height 45mm 37.5mm
Width Size 52.5mm 37.5mm
General info General info Intel Core i9-9940X Intel Core i5-6400
Has 64-bit Support No Data Found No Data Found
Semiconductor Size 14nm 14nm
TDP (Thermal Design Point) 165W 65W
PCI Express Version 3 3
CPU Temperature 88°C 71°C
Height 45mm 37.5mm
Width Size 52.5mm 37.5mm
Does it have Integrated Graphics No Yes
GPU Base Clock Speed Not Known 350MHz
DirectX Version Info Not Known 12
OpenGL Driver Version Not Known 4.4
OpenGL Driver Version Not Known 2
GPU Boost Clock Speed Not Known 950MHz
Total GPU Execution Units Not Known 24
No. of Supported Displays Not Known 3
Supports Power Optimized L2 Cache No No
Memory Memory Intel Core i9-9940X Intel Core i5-6400
RAM Memory Speed 2666MHz 2133MHz
Max Memory Bandwidth 79.47GB/s 34.1GB/s
Max Memory Channels 4 2
Supported Memory Size 128GB 64GB
Bus Bandwidth 8GT/s 8GT/s
ECC (Error-Correcting Code) Memory Support No No
DDR Type Memory Version 4 Not Known
Benchmarks Benchmarks Intel Core i9-9940X Intel Core i5-6400
PassMark Score 28274 6554
PassMark Score (Single Thread) 2627 1825
Geekbench 5 Score (Multi-Thread) 13722 Not Known
Cinebench R20 Score (Multi-Thread) 5912 Not Known
Cinebench R20 Score (Single Thread) 457 Not Known
Geekbench 5 Score (Single Thread) 1148 Not Known
Blender Score (Classroom) 329.7seconds Not Known
Blender Score (bmw27) 110.3seconds Not Known
PassMark Score (Overclocked) 29664 7199
CPU Performance (Per Watt) 83.2 236.8

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