Do the Core i5-10400F and GeForce RTX 3080 bottleneck each other?

Yes. At 1080p (1920 x 1080) the Core i5-10400F is the limit and holds the GeForce RTX 3080 back by about 5%, for roughly 95 fps on High. Moderate. 95 fps is playable, and fixing the limit is the cheapest way to reach a high refresh panel.

How many fps do the Core i5-10400F and GeForce RTX 3080 get at 1080p (1920 x 1080)?

Around 95 fps on the High preset. The Core i5-10400F tops out near 113 fps and the GeForce RTX 3080 near 100 fps, and the lower of the two sets the frame rate.

Core i5-10400F + GeForce RTX 3080 Bottleneck Calculator

Whether the Core i5-10400F and the GeForce RTX 3080 hold each other back, at every resolution, with the frame rate you can expect and the single upgrade that fixes it.

Processor

Graphics card

Screen resolution

Graphics preset

Memory (RAM)

Primary usage

Estimates built from published benchmark data, not a test of your exact PC. How we calculate this.

The same pair at every resolution

A processor pushes roughly the same number of frames whatever the resolution. A graphics card pushes far fewer as pixels go up. That is why the limit moves as you climb this table, and why a bottleneck figure quoted without a resolution means nothing.

Resolution	Estimated fps	Limited by	Gap
720p (1280 x 720)	108 fps	CPU	17.7%
1080p (1920 x 1080)	95 fps	CPU	5%
1440p (2560 x 1440)	71 fps	Balanced	0%
Ultrawide 1440p (3440 x 1440)	59 fps	Balanced	0%
4K (3840 x 2160)	35 fps	GPU	37.7%
8K (7680 x 4320)	11 fps	GPU	80.4%

What to do about it

The Ryzen 5 5600 is the slowest CPU in our database that stops the GeForce RTX 3080 from idling at 1080p (1920 x 1080). A faster chip than that adds nothing at this resolution, so this is the step to buy, not the top of the stack.

See what the Ryzen 5 5600 pairs with

Modelled from published benchmark data, not measured on this exact combination. The indexes behind these figures and the sources they come from are on how we calculate this.