AMD Ryzen Threadripper 3990X vs AMD Epyc 7742

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AMD Ryzen Threadripper 3990X
AMD Ryzen Threadripper 3990X Image
AMD Epyc 7742
AMD Epyc 7742 Image
AMD Ryzen Threadripper 3990X
AMD Epyc 7742
Key Differences Key Differences AMD Ryzen Threadripper 3990X AMD Epyc 7742
Cores 64 64
CPU Threads 128 128
Base Clock Speed 2.9GHz 2.25GHz
Turbo Clock Speed 4.3GHz 3.4GHz
TDP (THERMAL DESIGN POINT) 280W 225W
Has integrated graphics No No
Performance per watt 88.9 66.7
Performance Performance AMD Ryzen Threadripper 3990X AMD Epyc 7742
CPU Speed & Cores 64 x 2.9GHz 64 x 2.25GHz
Number of CPU Threads 128 128
L2 Cache Size 32MB 32MB
L3 Cache Size 256MB 256MB
Turbo Boost Frequency 4.3GHz 3.4GHz
L1 Cache Size 4000KB 4096KB
L2 Core 0.5MB/core 0.5MB/core
Does it have an unlocked multiplier Yes No
L3 Core 4MB/core 4MB/core
Clock Multiplier 29 Not Known
Uses ARM big.LITTLE tech No No
Uses ARM HMP No No
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Features Features AMD Ryzen Threadripper 3990X AMD Epyc 7742
Has AES Support 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 CPU Throttling No No
Supports ARM TrustZone Tech No No
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General info General info AMD Ryzen Threadripper 3990X AMD Epyc 7742
Has 64-bit Support Yes Yes
Semiconductor Size 7nm 14nm
TDP (Thermal Design Point) 280W 225W
PCI Express Version 4 4
CPU Temperature 68°C Not Known
Does it have Integrated Graphics No No
Supports Power Optimized L2 Cache No No
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Memory Memory AMD Ryzen Threadripper 3990X AMD Epyc 7742
RAM Memory Speed 3200MHz 3200MHz
Max Memory Bandwidth 95.37GB/s 190.7GB/s
Max Memory Channels 4 8
ECC (Error-Correcting Code) Memory Support Yes Yes
DDR Type Memory Version 4 4
Supported Memory Size Not Known 4000GB
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Benchmarks Benchmarks AMD Ryzen Threadripper 3990X AMD Epyc 7742
PassMark Score 80633 67185
PassMark Score (Single Thread) 2551 2376
Geekbench 5 Score (Multi-Thread) 24898 15005
Cinebench R20 Score (Single Thread) 495 398
Cinebench R20 Score (Multi-Thread) 24763 20644
Geekbench 5 Score (Single Thread) 1207 725
Blender Score (Classroom) 88.6seconds 95.8seconds
Blender Score (bmw27) 30seconds 33.9seconds
CPU Performance (Per Watt) 88.9 66.7
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