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Head-to-head

NVIDIA - GeForce RTX 4080 SUPER vs AMD - Radeon RX 7900 XT

Last updated · How Mars Score works
GeForce RTX 4080 SUPERNVIDIAILLUSTRATION
Probe A
NVIDIA
GeForce RTX 4080 SUPER
69.7/ 100B
Benchmarks73· 40%
Core69· 30%
Memory64· 20%
Power & Form70· 10%
Radeon RX 7900 XTAMDILLUSTRATION
Probe B
AMD
Radeon RX 7900 XT
67.2/ 100C
Benchmarks68· 40%
Core61· 30%
Memory72· 20%
Power & Form71· 10%
The fork

Where they actually differ

The most decisive specs, ranked by how much they matter — before the full spec table.

SpecNVIDIA - GeForce RTX 4080 SUPERAMD - Radeon RX 7900 XT
CUDA / Stream cores102405376
VRAM16 GB20 GB
Memory bus256 bit320 bit
3DMark Time Spy2150018800
Boost clock2550 MHz2400 MHz
TDP320 W315 W
Quick verdict

Between the GeForce RTX 4080 SUPER and Radeon RX 7900 XT, the GeForce RTX 4080 SUPER comes out ahead in cuda / stream cores / 3dmark time spy, while the Radeon RX 7900 XT wins on vram / memory bus. Overall, the GeForce RTX 4080 SUPER scores 69.7 and the Radeon RX 7900 XT scores 67.2 on our Mars Score.

Buying advice

Which should you buy?

These two are nearly even on the Mars Score (69.7 vs 67.2). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.

Pick the GeForce RTX 4080 SUPER if you push the hardware — gaming, on-device AI, heavy multitasking — and the extra compute headroom is worth the trade-offs. The biggest gaps in its favor are cuda / stream cores, 3dmark time spy, boost clock, among others. The single most decisive one: CUDA / Stream cores — 90.48% more. 10240 vs 5376.

Pick the Radeon RX 7900 XT if you care most about vram / memory bus. Its strongest claims are vram, memory bus, tdp, among others. The single most decisive one: VRAM — 25.00% more. 20 GB vs 16 GB.

There are no meaningful ties on the headline specs — every popular-comparison metric has a winner.

Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity says both are well-rounded; the differences are about trade-offs, not quality.

Decision guide

Which should you buy: NVIDIA - GeForce RTX 4080 SUPER or AMD - Radeon RX 7900 XT?

NVIDIA - GeForce RTX 4080 SUPER leads the current Mars Score by 2.5 points.The more useful decision is the trade-off behind that result: compare vram, cuda / stream cores, boost clock, tdp against the way you will actually use the product.

Choose NVIDIA - GeForce RTX 4080 SUPER if…

NVIDIA - GeForce RTX 4080 SUPER has the measurable edge on cuda cores, timespy score, boost clock mhz.

Choose AMD - Radeon RX 7900 XT if…

AMD - Radeon RX 7900 XT has the measurable edge on vram gb, memory bus bit, tdp w.

This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.

Why NVIDIA - GeForce RTX 4080 SUPER wins

  • CUDA / Stream cores — 90.48% more. 10240 vs 5376.
  • 3DMark Time Spy — 14.36% more. 21500 vs 18800.
  • Boost clock — 6.25% more. 2550 MHz vs 2400 MHz.
  • Has DLSS.

Why AMD - Radeon RX 7900 XT wins

  • VRAM — 25.00% more. 20 GB vs 16 GB.
  • Memory bus — 25.00% more. 320 bit vs 256 bit.
  • TDP — 5.00 W less. 315 vs 320.
  • Ray tracing cores — 5.00% more. 84 vs 80.
Full readout

Spec comparison

Core

SpecNVIDIA - GeForce RTX 4080 SUPERAMD - Radeon RX 7900 XT
ChipsetAD103Navi 31
Base clock2295 MHzlead1500 MHz
Boost clock2550 MHzlead2400 MHz
CUDA / Stream cores10240lead5376
Ray tracing cores8084lead

Memory

SpecNVIDIA - GeForce RTX 4080 SUPERAMD - Radeon RX 7900 XT
VRAM16 GB20 GBlead
VRAM typeGDDR6XleadGDDR6
Memory bus256 bit320 bitlead

Power & Form

SpecNVIDIA - GeForce RTX 4080 SUPERAMD - Radeon RX 7900 XT
TDP320 W315 Wlead
Recommended PSU750 W750 W
Length304 mm276 mmlead
Slot size3-slot2.5-slot

Benchmarks

SpecNVIDIA - GeForce RTX 4080 SUPERAMD - Radeon RX 7900 XT
3DMark Time Spy21500lead18800
DLSStrueleadfalse
FSRfalsetruelead
Reader questions

Frequently asked

Which has more VRAM, GeForce RTX 4080 SUPER or Radeon RX 7900 XT?+

Radeon RX 7900 XT ships with 20GB GDDR6 vs 16GB.

Which scores higher in 3DMark Time Spy, GeForce RTX 4080 SUPER or Radeon RX 7900 XT?+

GeForce RTX 4080 SUPER scores 21500 vs 18800.

Which draws less power, GeForce RTX 4080 SUPER or Radeon RX 7900 XT?+

Radeon RX 7900 XT draws 315W TDP vs 320W.

Drill down

Spec-level deep dives

By manufacturer

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