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RTX 4080 vs 4090 4K Performance

0 viewsUpdated 22 Apr 2026

Quick Answer

The RTX 4090 is 30-40% faster than the RTX 4080 at 4K but costs 70-80% more. The 4080 delivers 55-75 fps at 4K Ultra in most games, while the 4090 pushes 75-105 fps. For 4K 60fps gaming, the 4080 is sufficient. For 4K 120fps, only the 4090 delivers.

RTX 4080 vs RTX 4090 at 4K: Performance and Value

4K Benchmarks (Ultra Settings)

  • Cyberpunk 2077: 58 fps (4080) vs 85 fps (4090) - 4090 +47%
  • Alan Wake 2: 48 fps vs 68 fps - +42%
  • Hogwarts Legacy: 65 fps vs 92 fps - +42%
  • Spider-Man 2: 72 fps vs 102 fps - +42%
  • Forza Horizon 5: 90 fps vs 130 fps - +44%

With DLSS 3 (4K Quality)

  • Cyberpunk 2077: 92 fps (4080) vs 135 fps (4090)
  • Alan Wake 2: 75 fps vs 110 fps

DLSS 3 closes the gap by making both cards more playable, but the 4090 still leads by 35-40%.

Price Comparison

  • RTX 4080 Super: ~$1450 AUD
  • RTX 4090: ~$2500 AUD
  • Difference: ~$1050 AUD (+72% more money for 35-40% more performance)

Value Analysis

Cost per frame at 4K:

  • RTX 4080: $1450 / 65 fps = $22.30/fps
  • RTX 4090: $2500 / 92 fps = $27.17/fps

The 4080 delivers better value per frame. The 4090 is a luxury card for those who want the absolute best regardless of cost.

Our Verdict

The RTX 4080 delivers smooth 4K 60fps gaming and is the value choice. The RTX 4090 is for enthusiasts who want 4K 100+ fps or have the budget for the best. The $1050 AUD gap is hard to justify on value alone.

RTX 4080RTX 40904Kcomparisonvalue

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