Ryzen 9 3900X vs AMD Ryzen 9 5900XT — Specs & Performance Compared

Verdict: The AMD Ryzen 9 5900XT is ahead of the Ryzen 9 3900X on all 7 shared benchmarks on file, by 22% to 50%, including 50% in Cinebench R23 single (1,964 vs 1,312).

Side-by-side CPU comparison of the Ryzen 9 3900X and the AMD Ryzen 9 5900XT. Specs, synthetic benchmarks, AI inference tok/s, and Amazon availability below; each column header links to that part's benchmark page.

AMD

Ryzen 9 3900X

12 cores105W TDP$499 MSRP2019

Full Ryzen 9 3900X benchmarks →

AMD · Zen 3

AMD Ryzen 9 5900XT

Full AMD Ryzen 9 5900XT benchmarks →

*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

Spec	Ryzen 9 3900X	AMD Ryzen 9 5900XT
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, PCBench, GadgetVersus, NanoReview, TopCPU, 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.

Benchmark	Ryzen 9 3900X	AMD Ryzen 9 5900XT
Cinebench R23 multi (higher is better) Source: CGDirector, PCBench	18,682 points	22,786 points
Cinebench R23 single (higher is better) Source: CGDirector, PCBench	1,312 points	1,964 points
Geekbench 6 multi (higher is better) Source: GadgetVersus, NanoReview, TopCPU	9,259 points	13,539 points
Geekbench 6 single (higher is better) Source: GadgetVersus, NanoReview, TopCPU	1,682 points	2,331 points
PassMark CPU Mark (higher is better) Source: PassMark	32,491 points	43,895 pts
PassMark CPU Mark single-thread (higher is better) Source: PassMark	—	3,478 points
PassMark Single Thread (higher is better) Source: PassMark	2,702 points	3,475 pts
PassMark Single Thread Rating (higher is better) Source: PassMark	2,702 points	3,477 points
Y-cruncher Pi 1B (lower is better) Source: HWBOT	89 seconds	—

Quick answers

Which is faster, the Ryzen 9 3900X or the AMD Ryzen 9 5900XT?

The AMD Ryzen 9 5900XT is ahead of the Ryzen 9 3900X on all 7 shared benchmarks on file, by 22% to 50%, including 50% in Cinebench R23 single (1,964 vs 1,312).