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Best GPU for the Core i9-9900K

Graphics cards this processor can feed at each resolution.

At 1080p

  1. GeForce RTX 4080 Laptop n/a · CPU holds it back 7.8%
  2. GeForce RTX 5070 Ti Laptop n/a · CPU holds it back 5.8%
  3. GeForce RTX 4070 $599 · CPU holds it back 5.8%
  4. Radeon RX 9060 XT 16GB $349 · CPU holds it back 1.5%

At 1440p

  1. GeForce RTX 4070 Ti Super $799 · CPU holds it back 8.6%
  2. Radeon RX 7900 XT $899 · CPU holds it back 8.6%
  3. GeForce RTX 3090 Ti $1,999 · CPU holds it back 5.6%
  4. Radeon RX 9070 $549 · CPU holds it back 2.5%

At 4K

  1. GeForce RTX 4090 $1,599 · CPU holds it back 4.6%
  2. GeForce RTX 5080 $999 · balanced
  3. GeForce RTX 4080 Super $999 · balanced
  4. Radeon RX 7900 XTX $999 · balanced

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

Graphics cards the Core i9-9900K can drive at each resolution

At 1080p the strongest card the Core i9-9900K can feed is the GeForce RTX 4080 Laptop, with 12 GB of video memory and a 150 W rating. Next in the list is the GeForce RTX 5070 Ti Laptop, which is held back by 5.8%.

At 1440p the strongest card the Core i9-9900K can feed is the GeForce RTX 4070 Ti Super (launch price $799), with 16 GB of video memory and a 285 W rating. Next in the list is the Radeon RX 7900 XT, which is held back by 8.6%.

At 4K the strongest card the Core i9-9900K can feed is the GeForce RTX 4090 (launch price $1,599), with 24 GB of video memory and a 450 W rating. Next in the list is the GeForce RTX 5080, which is within 19.3% of the processor.

Memory, power and price

The ceiling climbs with resolution: GeForce RTX 4080 Laptop (index 47) at 1080p, GeForce RTX 4070 Ti Super at 1440p and GeForce RTX 4090 (index 100) at 4K.

The picks draw between 140 W and 450 W and carry 12 to 24 GB of video memory, so the top of the list needs a power supply of about 1000 W with this processor.

Questions

What is the best GPU for the Core i9-9900K?

At 1080p, the strongest card in our list that this processor can feed without a CPU bottleneck above 10% is the GeForce RTX 4080 Laptop. At higher resolutions it can feed faster cards.

What is the best GPU for the Core i9-9900K at 4K?

The GeForce RTX 4090 (index 100, 24 GB, 450 W) is the strongest card in our list that this processor can feed at 4K.

Updated October 3, 2026