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Ryzen 5 3550H vs Ryzen 9 3900X — Specs & Performance Compared

Verdict: The Ryzen 9 3900X is ahead of the Ryzen 5 3550H on all 6 shared benchmarks on file, by 35% to 375%, including 375% in Cinebench R23 multi (18,682 vs 3,930).

Side-by-side CPU comparison of the Ryzen 5 3550H and the Ryzen 9 3900X. Both released in 2019. 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

SpecRyzen 5 3550HRyzen 9 3900X
cores 412
threads 824
base clock ghz 2.13.8
boost clock ghz 3.74.6
tdp w 35105
l3 cache mb 464
process nm 127
socket AMD Socket FP5AMD 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, GadgetVersus, NanoReview, Geekbench Browser, PassMark Software 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.

BenchmarkRyzen 5 3550HRyzen 9 3900X
Cinebench R23 multi (higher is better)
Source: CGDirector, Notebookcheck		 3,930 points18,682 points
Cinebench R23 single (higher is better)
Source: CGDirector, Notebookcheck		 886 points1,312 points
Geekbench 6 multi (higher is better)
Source: GadgetVersus, NanoReview, Geekbench Browser		 2,832 points9,259 points
Geekbench 6 single (higher is better)
Source: GadgetVersus, NanoReview, Geekbench Browser		 940 points1,682 points
PassMark CPU Mark (higher is better)
Source: PassMark Software		 7,627 points32,491 points
PassMark Single Thread (higher is better)
Source: PassMark Software		 —2,702 points
PassMark Single Thread Rating (higher is better)
Source: PassMark Software		 2,000 points2,702 points
Y-cruncher Pi 1B (lower is better)
Source: HWBOT		 —89 seconds

Quick answers

Which is faster, the Ryzen 5 3550H or the Ryzen 9 3900X?

The Ryzen 9 3900X is ahead of the Ryzen 5 3550H on all 6 shared benchmarks on file, by 35% to 375%, including 375% in Cinebench R23 multi (18,682 vs 3,930).

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