Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | AMD - Radeon RX 7900 XT | AMD - Radeon RX 9080 |
|---|---|---|
| 3DMark Time Spy | 18800 | 25500 |
| CUDA / Stream cores | 5376 | 7168 |
| Ray tracing cores | 84 | 112 |
| TDP | 315 W | 290 W |
| Boost clock | 2400 MHz | 2950 MHz |
Between the Radeon RX 7900 XT and Radeon RX 9080, the Radeon RX 7900 XT comes out ahead in several specs, while the Radeon RX 9080 wins on 3dmark time spy / cuda / stream cores. Overall, the Radeon RX 7900 XT scores 67.2 and the Radeon RX 9080 scores 74.9 on our Mars Score.
Which should you buy?
The Radeon RX 9080 edges ahead on the Mars Score (67.2 vs 74.9), but the 7.7-point gap is small enough that the right pick comes down to which spec advantages matter to you.
The Radeon RX 7900 XT does not pull ahead on any single popular-comparison spec — its strengths sit in the spec-table groups rather than the headline advantages.
Pick the Radeon RX 9080 if you push the hardware — gaming, on-device AI, heavy multitasking — and the extra compute headroom is worth the trade-offs. Its strongest claims are 3dmark time spy, cuda / stream cores, ray tracing cores, among others. The single most decisive one: 3DMark Time Spy — 35.64% more. 25500 vs 18800.
Both ship with comparable vram, memory bus, dlss, so those specs do not separate the two — focus on the differences below.
Bottom line: the Radeon RX 9080 is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Which should you buy: AMD - Radeon RX 7900 XT or AMD - Radeon RX 9080?
AMD - Radeon RX 9080 leads the current Mars Score by 7.7 points.The more useful decision is the trade-off behind that result: compare cuda / stream cores, boost clock, tdp against the way you will actually use the product.
Choose AMD - Radeon RX 7900 XT if…
AMD - Radeon RX 7900 XT does not lead a decisive measured field here, so choose it for price, ecosystem, design, or availability when those matter more to you.
Choose AMD - Radeon RX 9080 if…
AMD - Radeon RX 9080 has the measurable edge on timespy score, cuda cores, ray tracing cores.
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 AMD - Radeon RX 7900 XT wins
- No decisive advantages.
Why AMD - Radeon RX 9080 wins
- ▲3DMark Time Spy — 35.64% more. 25500 vs 18800.
- ▲CUDA / Stream cores — 33.33% more. 7168 vs 5376.
- ▲Ray tracing cores — 33.33% more. 112 vs 84.
- ▲TDP — 25.00 W less. 290 vs 315.
- ▲Boost clock — 22.92% more. 2950 MHz vs 2400 MHz.
Spec comparison
Core
| Spec | AMD - Radeon RX 7900 XT | AMD - Radeon RX 9080 |
|---|---|---|
| Chipset | Navi 31 | Navi 48 |
| Base clockⓘ | 1500 MHz | 2000 MHzlead |
| Boost clockⓘ | 2400 MHz | 2950 MHzlead |
| CUDA / Stream coresⓘ | 5376 | 7168lead |
| Ray tracing coresⓘ | 84 | 112lead |
Memory
| Spec | AMD - Radeon RX 7900 XT | AMD - Radeon RX 9080 |
|---|---|---|
| VRAMⓘ | 20 GB | 20 GB |
| VRAM typeⓘ | GDDR6 | GDDR7lead |
| Memory busⓘ | 320 bit | 320 bit |
Power & Form
| Spec | AMD - Radeon RX 7900 XT | AMD - Radeon RX 9080 |
|---|---|---|
| TDPⓘ | 315 W | 290 Wlead |
| Recommended PSUⓘ | 750 Wlead | 800 W |
| Length | 276 mmlead | 310 mm |
| Slot size | 2.5-slot | 3-slot |
Benchmarks
| Spec | AMD - Radeon RX 7900 XT | AMD - Radeon RX 9080 |
|---|---|---|
| 3DMark Time Spyⓘ | 18800 | 25500lead |
| DLSSⓘ | false | false |
| FSRⓘ | true | true |
Frequently asked
Which has more VRAM, Radeon RX 7900 XT or Radeon RX 9080?+
Radeon RX 9080 ships with 20GB GDDR7 vs 20GB.
Which scores higher in 3DMark Time Spy, Radeon RX 7900 XT or Radeon RX 9080?+
Radeon RX 9080 scores 25500 vs 18800.
Which draws less power, Radeon RX 7900 XT or Radeon RX 9080?+
Radeon RX 9080 draws 290W TDP vs 315W.