EN

RTX 5080 vs RTX 4090: Gaming Performance & Bottleneck (2026)

The RTX 4090 is clearly the faster card: 14% ahead of the RTX 5080 at 4K and 12% at 1440p, where it averages 158 FPS to 140 in AAA games at High settings with a Ryzen 7 9800X3D. Newer isn't faster here: the RTX 4090 came out 3 years before the RTX 5080 and still leads in raster performance. At 1080p the lead shrinks to 5%, because even a 9800X3D can't feed the RTX 4090 fast enough there, so it earns its keep at 1440p and 4K. With ray tracing on at 1440p they manage 82 and 93 FPS respectively. At 4K High the RTX 5080 averages 86 FPS and the RTX 4090 97, both playable without upscaling. The RTX 4090 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 5080 needs a Ryzen 7 5700X3D and the RTX 4090 a Core i5-14600K.

Relative performance

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

1440p, AAA games

RTX 508089%
RTX 4090100%

140 vs 158 FPS · RTX 4090 +12%

4K, AAA games

RTX 508088%
RTX 4090100%

86 vs 97 FPS · RTX 4090 +14%

1440p, ray tracing

RTX 508088%
RTX 4090100%

82 vs 93 FPS · RTX 4090 +14%

FPS with a Ryzen 7 9800X3D

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

SettingRTX 5080RTX 4090Lead
1080p High184193
CPU-limited		4090 +5%
1440p High1401584090 +12%
4K High86974090 +14%
1440p ray tracing82934090 +14%

Specifications

Raster index: RTX 4090 = 100.

SpecRTX 5080RTX 4090
VRAM16 GB24 GB
Ray tracingYes, full speedYes, full speed
Released20252022
Raster index88100

Which CPU do you need?

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

Graphics cardSlowest CPUFPS
RTX 5080Ryzen 7 5700X3D125
RTX 4090Core i5-14600K142

Which should you buy?

Buy the RTX 4090 if you want the faster card: it's 14% ahead at 4K. The RTX 5080 is the better buy only if it costs at least 12% less, the gap at 1440p, because then it delivers more frames per dollar. Already own the RTX 5080? The RTX 4090 is only 12% faster at 1440p and is older hardware, so switching is rarely worth it.

Buy the RTX 5080 if…

  • you want the newer card (2025) with the longer driver and feature support ahead of it.
  • your CPU is older: a Ryzen 7 5700X3D is enough to keep it fed at 1440p.
  • it costs at least 12% less than the RTX 4090, which makes it the better value per frame.

Buy the RTX 4090 if…

  • you want the most FPS: it's 14% faster at 4K and 12% at 1440p.
  • you play with ray tracing: 93 vs 82 FPS at 1440p.
  • you play at 4K or use high-resolution texture packs: 24 GB of VRAM vs 16 GB.

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 Ryzen 7 5700X3D + RTX 5080 Check Core i5-14600K + RTX 4090

Popular builds with these cards

Ryzen 7 9800X3D + RTX 50801440p · GPU-limited 29% · ≈140 FPSRyzen 7 7800X3D + RTX 50801440p · GPU-limited 20% · ≈139 FPSCore i5-14600K + RTX 50801440p · Balanced · ≈133 FPSRyzen 7 9800X3D + RTX 40901440p · GPU-limited 20% · ≈158 FPSRyzen 7 7800X3D + RTX 40901440p · Balanced · ≈153 FPSCore i5-14600K + RTX 40901440p · Balanced · ≈142 FPS

RTX 5080 vs RTX 4090: quick answers

Is the RTX 5080 faster than the RTX 4090?

No. The RTX 4090 is about 14% faster at 4K and 12% faster at 1440p in AAA games at High settings. With ray tracing on at 1440p the RTX 5080 gets about 82 FPS and the RTX 4090 93 FPS.

How many FPS do the RTX 5080 and RTX 4090 get?

With a Ryzen 7 9800X3D at High settings in AAA games, the RTX 5080 averages about 184 FPS at 1080p, 140 at 1440p and 86 at 4K. The RTX 4090 averages 193, 158 and 97 FPS. DLSS, FSR or XeSS upscaling adds roughly 40% where the graphics card is the limit.

What CPU do I need for the RTX 5080 or RTX 4090?

To keep the CPU bottleneck under 10% at 1440p, the RTX 5080 needs at least a Ryzen 7 5700X3D and the RTX 4090 needs at least a Core i5-14600K. 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 4090 and the RTX 5080.