CPU and GPU pairings

Does the Ryzen 7 7800X3D bottleneck the RTX 4090?

At 1080p, the processor holds the graphics card back in many games. At 1440p, the two are well matched. At 4K, the graphics card sets the pace, by a wide margin.

AMD Ryzen 7 7800X3D with NVIDIA GeForce RTX 4090

  1. 1080p

    The processor holds this card back in many games

    The processor can prepare about 80% of the frames this card could draw.

  2. 1440p

    Well matched

    The processor could keep up with a graphics card about 10% faster.

  3. 4K

    The graphics card sets the pace, by a wide margin

    The processor could keep up with a graphics card about 80% faster.

The processor clearly holds this card back only at 1080p. At 1440p the two are close, and at 4K the graphics card sets the pace, so a faster processor would pay off mainly at 1080p.

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?

Before buying a faster processor, make sure your PC gets what it should from the one it has: a setting left wrong can cost as many frames as the upgrade would add. On a PC with these parts, Bottleneck checks, free:

  • Memory at its rated speed, in dual channel. Games held back by the processor lose the most when memory runs slower than it should.
  • 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.

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 7800X3D keeps up with

Current cards that are well matched with the Ryzen 7 7800X3D at 1440p, fastest first.

Power supply

An 850 W power supply covers this pair: at full load the Ryzen 7 7800X3D, 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 7800X3D 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.