Core Ultra 9 285K vs Ryzen 9 9900X

Gaming speed, cores and clocks

The Core Ultra 9 285K and the Ryzen 9 9900X are within a few percent of each other for gaming. In a game, you will not see the difference.

The Core Ultra 9 285K has 24 cores and 24 threads, and the Ryzen 9 9900X has 12 cores and 24 threads. The extra cores of the Core Ultra 9 285K help with video editing, streaming while you play and heavy multitasking more than with the game itself. Boost clocks are 5.7 GHz and 5.6 GHz.

Platform, power and price

The Core Ultra 9 285K uses the LGA1851 socket and the Ryzen 9 9900X uses AM5, so they need different motherboards, and often different memory. When you compare prices, count the board as well as the chip.

Rated power is 125 W for the first and 120 W for the second. That is close enough that cooling needs will be similar.

At launch the Core Ultra 9 285K cost $589 and the Ryzen 9 9900X $499, which gives 14.1 and 16.4 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 Core Ultra 9 285K can feed a card up to the GeForce RTX 5080 before it holds the card back by more than 10 percent. The Ryzen 9 9900X reaches the GeForce RTX 4080 Super. Both chips are in the same range for graphics card pairing.

Choose the Core Ultra 9 285K if you want the faster gaming chip and the same or more cores. Choose the Ryzen 9 9900X if you would rather spend the difference on a graphics card, which does more for frame rates in most games.