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AMD Ryzen 5 7640HS vs Ryzen 9 3900X — Specs & Performance Compared

Verdict: The AMD Ryzen 5 7640HS leads on 4 of 6 shared benchmarks (30% in Cinebench R23 single); the Ryzen 9 3900X takes 2 (44% in Cinebench R23 multi).

Side-by-side CPU comparison of the AMD Ryzen 5 7640HS and the Ryzen 9 3900X. Specs, synthetic benchmarks, AI inference tok/s, and Amazon availability below; each column header links to that part's benchmark page.

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*Price sourced from Amazon.com. Price and availability subject to change.

Where to buy

A listing for each part; the current price and stock are on the retailer's page.

Specs side-by-side

SpecAMD Ryzen 5 7640HSRyzen 9 3900X
cores —12
threads —24
base clock ghz —3.8
boost clock ghz —4.6
tdp w —105
l3 cache mb —64
process nm —7
socket —AMD Socket AM4

Synthetic benchmarks

Each row says whether a higher or a lower number is better (ranks and times are lower-is-better). Scores come from CGDirector, Notebookcheck, TopCPU.net, cpu-monkey.com, GadgetVersus, Geekbench Browser, NanoReview, PassMark and HWBOT; each row links its sources, and where they differ the cell shows their median. Empty cells mean we don't yet have that benchmark on file for the SKU.

BenchmarkAMD Ryzen 5 7640HSRyzen 9 3900X
Cinebench R23 multi (higher is better)
Source: CGDirector, Notebookcheck, TopCPU.net, cpu-monkey.com		 12,986 points18,682 points
Cinebench R23 single (higher is better)
Source: CGDirector, Notebookcheck, TopCPU.net		 1,703 points1,312 points
Geekbench 6 multi (higher is better)
Source: GadgetVersus, Geekbench Browser, NanoReview, Notebookcheck		 10,199 points9,259 points
Geekbench 6 single (higher is better)
Source: GadgetVersus, Geekbench Browser, NanoReview, Notebookcheck		 2,466 points1,682 points
PassMark CPU Mark (higher is better)
Source: PassMark		 22,782 pts32,491 points
PassMark CPU Mark single thread (higher is better)
Source: PassMark		 3,635 points—
PassMark Single Thread (higher is better)
Source: PassMark		 3,639 pts2,702 points
PassMark Single Thread Rating (higher is better)
Source: PassMark		 —2,702 points
Y-cruncher Pi 1B (lower is better)
Source: HWBOT		 —89 seconds

Quick answers

Which is faster, the AMD Ryzen 5 7640HS or the Ryzen 9 3900X?

The AMD Ryzen 5 7640HS leads on 4 of 6 shared benchmarks (30% in Cinebench R23 single); the Ryzen 9 3900X takes 2 (44% in Cinebench R23 multi).

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