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Best CPU for the GeForce RTX 3090

Processors that keep up with this card at each resolution.

At 1080p

  1. Ryzen 7 5700 $175 · GPU holds it back 8.9%
  2. Core i7-13700H n/a · GPU holds it back 8.9%
  3. Ryzen 7 7840HS n/a · GPU holds it back 8.9%
  4. Core i9-11900K $539 · GPU holds it back 8.9%

At 1440p

  1. Core i7-11800H n/a · GPU holds it back 7.8%
  2. Core i5-10500 $192 · GPU holds it back 7.8%
  3. Ryzen 5 3600 $199 · GPU holds it back 7.8%
  4. Ryzen 5 4600G $154 · GPU holds it back 5.7%

At 4K

  1. Core i5-7600 $213 · GPU holds it back 9.8%
  2. Ryzen 5 1600 $219 · GPU holds it back 6.5%
  3. Core i5-7600K $242 · GPU holds it back 6.5%
  4. Ryzen 5 1600X $249 · GPU holds it back 3.2%

Picks keep the CPU and GPU within 10% of each other. Prices are launch prices, not today’s shelf prices.

Processors for the GeForce RTX 3090 at each resolution

At 1080p the cheapest processor that keeps the GeForce RTX 3090 within 10 percent is the Ryzen 7 5700 (launch price $175), with a gaming index of 60 on the AM4 socket. Next in the list is the Core i7-13700H, which is still 8.9% short.

At 1440p the cheapest processor that keeps the GeForce RTX 3090 within 10 percent is the Core i7-11800H, with a gaming index of 45. Next in the list is the Core i5-10500, which is still 7.8% short.

At 4K the cheapest processor that keeps the GeForce RTX 3090 within 10 percent is the Core i5-7600 (launch price $213), with a gaming index of 27 on the LGA1151 socket. Next in the list is the Ryzen 5 1600, which is still 6.5% short.

What it costs and what it fits

Moving from 1080p to 4K changes what you need. The cheapest balanced chip at 1080p has an index of 60; at 4K the Core i5-7600 at 27 is enough, although it launched for $38 more.

For reference, the fastest chip we track, the Ryzen 7 9800X3D (index 100), is 34.1% faster than the GeForce RTX 3090 needs at 1080p.

The picks sit on AM4 (5), BGA (3), LGA1200 (2) and LGA1151 (2) sockets, released between 2017 and 2024.

Questions

What is the best CPU for the GeForce RTX 3090?

At 1080p, a processor like the Ryzen 7 5700 is enough to avoid a CPU bottleneck above 10%. Faster is fine but gives little extra in games with this card.

What is the cheapest CPU for the GeForce RTX 3090 at 1440p?

The Core i7-11800H (index 45) is the cheapest chip in our list that keeps the card within 10 percent at 1440p.

Updated October 3, 2026