Intel Core i9-9940X vs Intel Core i5-8420T

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Intel Core i9-9940X
Intel Core i9-9940X Image
Intel Core i5-8420T
Intel Core i5-8420T Image
Intel Core i9-9940X
Intel Core i5-8420T
Key Differences Key Differences Intel Core i9-9940X Intel Core i5-8420T
Cores 14 6
CPU Threads 28 6
Base Clock Speed 3.3GHz 1.8GHz
Turbo Clock Speed 4.4GHz 3.4GHz
TDP (THERMAL DESIGN POINT) 165W 35W
Has integrated graphics No Yes
Performance per watt 83.2 Not Known
Performance Performance Intel Core i9-9940X Intel Core i5-8420T
CPU Speed & Cores 14 x 3.3GHz 6 x 1.8GHz
Number of CPU Threads 28 6
L2 Cache Size 14MB 1.5MB
L3 Cache Size 19.25MB 9MB
Turbo Boost Frequency 4.4GHz 3.4GHz
L1 Cache Size 896KB 384KB
L2 Core 1MB/core 0.25MB/core
L3 Core 1.38MB/core 1.5MB/core
Clock Multiplier 33 18
Turbo Boost Tech Version 2 2
Does it have an unlocked multiplier No No
Uses ARM big.LITTLE tech No No
Uses ARM HMP No No
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Features Features Intel Core i9-9940X Intel Core i5-8420T
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 Yes
Has NX Processor Bit Support Yes Yes
Has FMA3 Instructions Support Yes Yes
Supports ARM TrustZone Tech No No
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Miscellaneous Miscellaneous Intel Core i9-9940X Intel Core i5-8420T
Height 45mm 37.5mm
Width Size 52.5mm 37.5mm
General info General info Intel Core i9-9940X Intel Core i5-8420T
Has 64-bit Support Yes Yes
Semiconductor Size 14nm 14nm
TDP (Thermal Design Point) 165W 35W
PCI Express Version 3 3
CPU Temperature 88°C 72°C
Height 45mm 37.5mm
Width Size 52.5mm 37.5mm
Does it have Integrated Graphics No Yes
DirectX Version Info Not Known 12
OpenGL Driver Version Not Known 4.4
OpenGL Driver Version Not Known 2
No. of Supported Displays Not Known 3
Supports Power Optimized L2 Cache No No
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Memory Memory Intel Core i9-9940X Intel Core i5-8420T
RAM Memory Speed 2666MHz 2666MHz
Max Memory Bandwidth 79.47GB/s 39.74GB/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 4
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Benchmarks Benchmarks Intel Core i9-9940X Intel Core i5-8420T
PassMark Score 28274 Not Known
PassMark Score (Single Thread) 2627 Not Known
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 Not Known
CPU Performance (Per Watt) 83.2 Not Known
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