Ryzen 9 9900X3D vs Ryzen 7 7800X3D

Gaming speed, cores and clocks

On our gaming index the Ryzen 9 9900X3D scores 96 and the Ryzen 7 7800X3D scores 92, about 4% faster for gaming. That gap is small and mostly shows up at 1080p with a very fast graphics card.

The Ryzen 9 9900X3D has 12 cores and 24 threads, and the Ryzen 7 7800X3D has 8 cores and 16 threads. The extra cores of the Ryzen 9 9900X3D help with video editing, streaming while you play and heavy multitasking more than with the game itself. Boost clocks are 5.5 GHz and 5 GHz.

Platform, power and price

Both chips use the AM5 socket, so they fit the same motherboards. You can swap one for the other without changing the board.

Rated power is 120 W for the first and 120 W for the second. That is close enough that cooling needs will be similar.

At launch the Ryzen 9 9900X3D cost $599 and the Ryzen 7 7800X3D $449, which gives 16.0 and 20.5 points of gaming performance per $100. Today's prices will differ.

Which graphics cards each one can feed, and which to buy

At 1080p the Ryzen 9 9900X3D can feed a card up to the GeForce RTX 5080 before it holds the card back by more than 10 percent. The Ryzen 7 7800X3D reaches the GeForce RTX 5080. Both chips are in the same range for graphics card pairing.

Choose the Ryzen 9 9900X3D if you want the faster gaming chip and the same or more cores. Choose the Ryzen 7 7800X3D if you would rather spend the difference on a graphics card, which does more for frame rates in most games.