Core i9-9940XvsEPYC 9755
The Intel Core i9-9940X is a 14-core desktop HEDT chip for enthusiasts who need solid single-threaded speed, while the AMD EPYC 9755 is a 128-core server monster built for massive multi-threaded workloads.
Core i9-9940X
Skylake (server) · 14 nm · 2018
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EPYC 9755
Turin · 4 nm · 2024
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Overall Performance Score
A unified score from combined synthetic and real-world benchmarks. 100 represents the fastest desktop CPU available.
Side-by-Side Specs
Every detail compared. Highlighted cells indicate the leading value for that metric.
Which should you buy?
The EPYC 9755 wins overall for its massive multithreading advantage over the Core i9-9940X.
For budget-minded buyers, the Core i9-9940X is the smarter pick if you need less extreme parallel processing.
The Core i9-9940X is the right choice for single-threaded applications on a limited budget where the EPYC's power and cost are overkill.
Frequently asked questions
Is the Core i9-9940X better than the EPYC 9755?
Overall the EPYC 9755 is the stronger processor: it ranks higher in our aggregate performance score (100 vs 17 out of 100), so it leads the Core i9-9940X in most workloads.
How much faster is the EPYC 9755 than the Core i9-9940X?
Based on our aggregated benchmark scores the EPYC 9755 is roughly 488% faster than the Core i9-9940X overall. The real-world gap varies by game, resolution and settings.
Which should you buy, the Core i9-9940X or the EPYC 9755?
If you want the most performance, pick the EPYC 9755. If the Core i9-9940X is meaningfully cheaper where you shop, it can be the better value for similar real-world results — check current prices and the full spec comparison above before deciding.