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RTX 4080 vs RTX 3090: Gaming Performance & Bottleneck (2026)

This is not a close contest. The RTX 4080 is 37% faster than the RTX 3090 at 4K and 36% faster at 1440p: 125 vs 92 FPS in AAA games at High settings with a Ryzen 7 9800X3D. For a card 2 years newer, that is a big generational step. The order holds at 1080p (32% apart), so the RTX 4080 is the quicker card at every resolution. Ray tracing widens the gap to 44% (73 vs 50 FPS at 1440p), as the RTX 3090's RT hardware is less efficient. In esports games like CS2 or Valorant at 1080p they reach 496 and 411 FPS, so either can feed a 360 Hz monitor. At 4K the RTX 3090 manages 55 FPS native, and DLSS Quality lifts that to about 78. The RTX 3090 also has more memory (24 GB vs 16 GB), though both have enough for 4K High today. To stay under a 10% CPU bottleneck at 1440p, the RTX 4080 needs a Core i5-12400F and the RTX 3090 a Core i5-10400F.

Relative performance

Faster card = 100%. Average FPS at High settings with a Ryzen 7 9800X3D.

1440p, AAA games

RTX 4080100%
RTX 309073%

125 vs 92 FPS · RTX 4080 +36%

4K, AAA games

RTX 4080100%
RTX 309073%

76 vs 55 FPS · RTX 4080 +37%

1440p, ray tracing

RTX 4080100%
RTX 309069%

73 vs 50 FPS · RTX 4080 +44%

FPS with a Ryzen 7 9800X3D

Average FPS in AAA games, no upscaling. A fast CPU, so the graphics card sets the pace.

SettingRTX 4080RTX 3090Lead
1080p High1721314080 +32%
1440p High125924080 +36%
4K High76554080 +37%
1440p ray tracing73504080 +44%

Specifications

Raster index: RTX 4090 = 100.

SpecRTX 4080RTX 3090
VRAM16 GB24 GB
Ray tracingYes, full speedYes, 95% efficiency
Released20222020
Raster index7857

Which CPU do you need?

Slowest common CPU that keeps each card under a 10% bottleneck at 1440p High.

Graphics cardSlowest CPUFPS
RTX 4080Core i5-12400F112
RTX 3090Core i5-10400F82

Which should you buy?

Buy the RTX 4080 if you want the faster card: it's 37% ahead at 4K. The RTX 3090 is the better buy only if it costs at least 36% less, the gap at 1440p, because then it delivers more frames per dollar. Already own the RTX 3090? Going to the RTX 4080 gains 36% at 1440p, which is a worthwhile upgrade.

Buy the RTX 4080 if…

  • you want the most FPS: it's 37% faster at 4K and 36% at 1440p.
  • you play with ray tracing: 73 vs 50 FPS at 1440p.
  • you want the newer card (2022) with the longer driver and feature support ahead of it.

Buy the RTX 3090 if…

  • you play at 4K or use high-resolution texture packs: 24 GB of VRAM vs 16 GB.
  • your CPU is older: a Core i5-10400F is enough to keep it fed at 1440p.
  • it costs at least 36% less than the RTX 4080, which makes it the better value per frame.

Check your build

These numbers use a Ryzen 7 9800X3D to isolate the graphics card. Your own CPU, resolution and settings change the result, so run your exact parts through the calculator.

Check Core i5-12400F + RTX 4080 Check Core i5-10400F + RTX 3090

RTX 4080 vs RTX 3090: quick answers

Is the RTX 4080 faster than the RTX 3090?

Yes. The RTX 4080 is about 37% faster at 4K and 36% faster at 1440p in AAA games at High settings. With ray tracing on at 1440p the RTX 4080 gets about 73 FPS and the RTX 3090 50 FPS.

How many FPS do the RTX 4080 and RTX 3090 get?

With a Ryzen 7 9800X3D at High settings in AAA games, the RTX 4080 averages about 172 FPS at 1080p, 125 at 1440p and 76 at 4K. The RTX 3090 averages 131, 92 and 55 FPS. DLSS, FSR or XeSS upscaling adds roughly 40% where the graphics card is the limit.

What CPU do I need for the RTX 4080 or RTX 3090?

To keep the CPU bottleneck under 10% at 1440p, the RTX 4080 needs at least a Core i5-12400F and the RTX 3090 needs at least a Core i5-10400F. At 1080p you need a faster CPU for the same result, and at 4K a slower one is fine. A slower CPU narrows the gap between the RTX 4080 and the RTX 3090.