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Ryzen 9 3900X vs AMD Ryzen 9 3950X — Specs & Performance Compared

Side-by-side CPU comparison of the Ryzen 9 3900X and the AMD Ryzen 9 3950X. Both released in 2019. MSRP range: $499 · $749. 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 9 3900XAMD Ryzen 9 3950X
cores 1216
threads 2432
base clock ghz 3.83.5
boost clock ghz 4.64.7
tdp w 105105
l3 cache mb 6464
process nm 77
socket AMD Socket AM4AM4

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, Geekbench Browser, PassMark Software, numberworld.org 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 9 3900XAMD Ryzen 9 3950X
Cinebench R23 multi (higher is better)
Source: CGDirector		 18,682 points26,375 points
Cinebench R23 single (higher is better)
Source: CGDirector		 1,312 points1,406 points
Geekbench 6 multi (higher is better)
Source: GadgetVersus, NanoReview, Geekbench Browser		 9,259 points11,367 points
Geekbench 6 single (higher is better)
Source: GadgetVersus, NanoReview, Geekbench Browser		 1,682 points1,782 points
PassMark CPU Mark (higher is better)
Source: PassMark Software		 32,491 points38,432 points
PassMark single thread (higher is better)
Source: PassMark Software		 —2,701 points
PassMark Single Thread (higher is better)
Source: PassMark Software		 2,702 points—
PassMark Single Thread Rating (higher is better)
Source: PassMark Software		 2,702 points2,700 points
Y-cruncher 1B digits (lower is better)
Source: numberworld.org		 —29 seconds
Y-cruncher Pi 1B (lower is better)
Source: HWBOT		 89 seconds—

Quick answers

What did the Ryzen 9 3900X and the AMD Ryzen 9 3950X cost at launch?

The Ryzen 9 3900X launched at a $499 MSRP and the AMD Ryzen 9 3950X at $749. Street prices drift from launch pricing; the Where to buy section links current listings.

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