Intel Core i9-9900X vs AMD Epyc 7251

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Intel Core i9-9900X
Intel Core i9-9900X Image
AMD Epyc 7251
AMD Epyc 7251 Image
Intel Core i9-9900X
AMD Epyc 7251
Key Differences Key Differences Intel Core i9-9900X AMD Epyc 7251
Cores 10 8
CPU Threads 20 16
Base Clock Speed 3.5GHz 2.1GHz
Turbo Clock Speed 4.4GHz 2.9GHz
TDP (THERMAL DESIGN POINT) 165W 120W
Has integrated graphics No No
Performance per watt 61.8 Not Known
Performance Performance Intel Core i9-9900X AMD Epyc 7251
CPU Speed & Cores 10 x 3.5GHz 8 x 2.1GHz
Number of CPU Threads 20 16
L2 Cache Size 10MB 4MB
L3 Cache Size 19.25MB 32MB
Turbo Boost Frequency 4.4GHz 2.9GHz
L1 Cache Size 640KB 768KB
L2 Core 1MB/core 0.5MB/core
L3 Core 1.93MB/core 4MB/core
Clock Multiplier 35 21
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 i9-9900X AMD Epyc 7251
Has AES Support Yes Yes
Supports CPU Throttling Yes No
Supported SSE Version 4.2 4.2
Has AVX Support Yes Yes
Has MMX Tech Support Yes Yes
Has F16C Support Yes Yes
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
Has FMA4 Instructions Support No No
General info General info Intel Core i9-9900X AMD Epyc 7251
Has 64-bit Support No Data Found No Data Found
Semiconductor Size 14nm 14nm
TDP (Thermal Design Point) 165W 120W
PCI Express Version 3 3
CPU Temperature 92°C Not Known
Does it have Integrated Graphics No No
Transistor Count Not Known 19200 million
Supports Power Optimized L2 Cache No No
Memory Memory Intel Core i9-9900X AMD Epyc 7251
RAM Memory Speed 2666MHz 2400MHz
Max Memory Channels 4 8
Supported Memory Size 128GB 2000GB
Bus Bandwidth 8GT/s Not Known
ECC (Error-Correcting Code) Memory Support No Yes
DDR Type Memory Version 4 Not Known
Max Memory Bandwidth Not Known 307GB/s
Benchmarks Benchmarks Intel Core i9-9900X AMD Epyc 7251
PassMark Score 21793 10771
PassMark Score (Single Thread) 2590 1523
Geekbench 5 Score (Multi-Thread) 10204 Not Known
Cinebench R20 Score (Multi-Thread) 4855 Not Known
Cinebench R20 Score (Single Thread) 455 Not Known
Geekbench 5 Score (Single Thread) 1115 Not Known
PassMark Score (Overclocked) 23091 Not Known
CPU Performance (Per Watt) 61.8 Not Known

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