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Best GPU for the Core i7-6800K

Graphics cards this processor can feed at each resolution.

At 1080p

  1. Arc A750 $289 · CPU holds it back 8.2%
  2. Radeon RX 6600 XT $379 · CPU holds it back 8.2%
  3. Radeon RX 5700 XT $399 · CPU holds it back 8.2%
  4. GeForce RTX 3060 $329 · CPU holds it back 4.4%

At 1440p

  1. GeForce RTX 4070 Laptop n/a · CPU holds it back 8.9%
  2. Arc B580 $249 · CPU holds it back 6.1%
  3. GeForce RTX 3070 Ti Laptop n/a · CPU holds it back 6.1%
  4. Radeon RX 6700 XT $479 · CPU holds it back 6.1%

At 4K

  1. GeForce RTX 5080 Laptop n/a · CPU holds it back 8.2%
  2. GeForce RTX 3080 Ti $1,199 · CPU holds it back 8.2%
  3. GeForce RTX 4070 Super $599 · CPU holds it back 6.5%
  4. GeForce RTX 5070 $549 · CPU holds it back 4.7%

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

Graphics cards the Core i7-6800K can drive at each resolution

At 1080p the strongest card the Core i7-6800K can feed is the Arc A750 (launch price $289), with 8 GB of video memory and a 225 W rating. Next in the list is the Radeon RX 6600 XT, which is held back by 8.2%.

At 1440p the strongest card the Core i7-6800K can feed is the GeForce RTX 4070 Laptop, with 8 GB of video memory and a 140 W rating. Next in the list is the Arc B580, which is held back by 6.1%.

At 4K the strongest card the Core i7-6800K can feed is the GeForce RTX 5080 Laptop, with 16 GB of video memory and a 150 W rating. Next in the list is the GeForce RTX 3080 Ti, which is held back by 8.2%.

Memory, power and price

The ceiling climbs with resolution: Arc A750 (index 25) at 1080p, GeForce RTX 4070 Laptop at 1440p and GeForce RTX 5080 Laptop (index 55) at 4K.

The picks draw between 140 W and 350 W and carry 8 to 16 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 i7-6800K?

At 1080p, the strongest card in our list that this processor can feed without a CPU bottleneck above 10% is the Arc A750. At higher resolutions it can feed faster cards.

What is the best GPU for the Core i7-6800K at 4K?

The GeForce RTX 5080 Laptop (index 55, 16 GB, 150 W) is the strongest card in our list that this processor can feed at 4K.

Updated October 3, 2026