Do the Core i5-14400F and Radeon RX 580 8GB bottleneck each other?

Yes. At 1080p (1920 x 1080) the Radeon RX 580 8GB is the limit and holds the Core i5-14400F back by about 57.2%, for roughly 30 fps on High. High. 30 fps is below the 60 fps line, so this is worth fixing before anything else.

How many fps do the Core i5-14400F and Radeon RX 580 8GB get at 1080p (1920 x 1080)?

Around 30 fps on the High preset. The Core i5-14400F tops out near 142 fps and the Radeon RX 580 8GB near 30 fps, and the lower of the two sets the frame rate.

Core i5-14400F + Radeon RX 580 8GB Bottleneck Calculator

Whether the Core i5-14400F and the Radeon RX 580 8GB 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)	41 fps	GPU	41.5%
1080p (1920 x 1080)	30 fps	GPU	57.2%
1440p (2560 x 1440)	22 fps	GPU	68.5%
Ultrawide 1440p (3440 x 1440)	15 fps	GPU	79.3%
4K (3840 x 2160)	9 fps	GPU	88%
8K (7680 x 4320)	3 fps	GPU	95.3%

What to do about it

The GeForce RTX 5060 is the slowest card that puts this build back in balance at 1080p (1920 x 1080). Your Core i5-14400F has the headroom to drive it, so the card is where the money should go.

Run the numbers on the GeForce RTX 5060

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.