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Ryzen 7 3800X vs Ryzen 9 3900X — Specs & Performance Compared

Verdict: The Ryzen 7 3800X leads on 4 of 7 shared benchmarks (2% in Cinebench R23 single); the Ryzen 9 3900X takes 3 (39% in Cinebench R23 multi).

Side-by-side CPU comparison of the Ryzen 7 3800X 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 7 3800XRyzen 9 3900X
cores 812
threads 1624
base clock ghz 3.93.8
boost clock ghz 4.54.6
tdp w 105105
memory bus Dual-channel—
l3 cache mb 3264
process nm 77
socket AMD Socket AM4AMD 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, GadgetVersus, NanoReview, CpuTronic, HardwareDB, 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 7 3800XRyzen 9 3900X
Cinebench R23 multi (higher is better)
Source: CGDirector, GadgetVersus		 13,463 points18,682 points
Cinebench R23 single (higher is better)
Source: CGDirector, GadgetVersus		 1,334 points1,312 points
Geekbench 6 multi (higher is better)
Source: GadgetVersus, NanoReview, CpuTronic, HardwareDB		 8,400 points9,259 points
Geekbench 6 single (higher is better)
Source: GadgetVersus, NanoReview, CpuTronic, HardwareDB, Geekbench Browser		 1,696 points1,682 points
PassMark CPU Mark (higher is better)
Source: PassMark Software		 22,971 points32,491 points
PassMark Single Thread (higher is better)
Source: PassMark Software		 2,710 points2,702 points
PassMark Single Thread Rating (higher is better)
Source: PassMark Software		 2,709 points2,702 points
Y-cruncher 1B (lower is better)
Source: HWBOT		 39 seconds—
Y-cruncher Pi 1B (lower is better)
Source: HWBOT		 —89 seconds

Quick answers

Which is faster, the Ryzen 7 3800X or the Ryzen 9 3900X?

The Ryzen 7 3800X leads on 4 of 7 shared benchmarks (2% in Cinebench R23 single); the Ryzen 9 3900X takes 3 (39% in Cinebench R23 multi).

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