CPU and GPU pairings

Does the Ryzen 7 9800X3D bottleneck the RTX 4090?

At 1080p, the two are well matched. At 1440p, the graphics card sets the pace. At 4K, the graphics card sets the pace, by a wide margin.

AMD Ryzen 7 9800X3D with NVIDIA GeForce RTX 4090

  1. 1080p

    Well matched

    The processor can prepare about 90% of the frames this card could draw.

  2. 1440p

    The graphics card sets the pace

    The processor could keep up with a graphics card about 30% faster.

  3. 4K

    The graphics card sets the pace, by a wide margin

    The processor could keep up with a graphics card about 2.1 times as fast.

A balanced pair: at 1080p neither part is wasted, and at higher resolutions the graphics card sets the pace, which is where you want it.

An estimate for a typical game at high settings. Strategy, simulation and large multiplayer games lean on the processor more; lower settings and upscaling do too.

Change either part in the calculator

Does your PC deliver this?

These parts suit each other, so what decides your frame rate is whether your PC runs them as designed. Two PCs with the same parts can perform very differently. On a PC with these parts, Bottleneck checks, free:

  • Resizable BAR. Both parts support it, and it is often left switched off in the BIOS.
  • Hardware GPU scheduling. Frame generation on the RTX 4090 will not run without it.
  • The monitor’s refresh rate. A 144 Hz monitor left at 60 Hz holds every game to 60 frames a second.
  • Memory at its rated speed, in dual channel. Memory left at a slow default speed costs frames whichever part sets the pace.

Then play a game while it measures, and it tells you which part really set the pace, and for what share of the frames: measured on your PC, where this page can only estimate.

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Graphics cards the Ryzen 7 9800X3D keeps up with

Every current graphics card at 1440p, up to the RTX 5090: with any of them, the graphics card sets the pace there.

Power supply

An 850 W power supply covers this pair: at full load the Ryzen 7 9800X3D, the RTX 4090 and the rest of the PC can draw up to about 672 W. The power supply page for the RTX 4090 has the size with other processors.

More pairings

How this is worked out

Each part gets one figure for games from the reference dataset the Bottleneck app uses to judge the hardware it measures, and the two are compared at each resolution. The calculator explains the model; this page is its answer for the Ryzen 7 9800X3D and the RTX 4090. It is an estimate from the part names: memory speed, settings, heat and the monitor decide what a real PC delivers.