Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | AMD - Radeon RX 7900 XTX | AMD - Radeon RX 9080 XT |
|---|---|---|
| 3DMark Time Spy | 21000 | 28500 |
| CUDA / Stream cores | 6144 | 8192 |
| Ray tracing cores | 96 | 128 |
| TDP | 355 W | 330 W |
| Boost clock | 2500 MHz | 3100 MHz |
Between the Radeon RX 7900 XTX and Radeon RX 9080 XT, the Radeon RX 7900 XTX comes out ahead in several specs, while the Radeon RX 9080 XT wins on 3dmark time spy / cuda / stream cores. Overall, the Radeon RX 7900 XTX scores 70.5 and the Radeon RX 9080 XT scores 79 on our Mars Score.
Which should you buy?
The Radeon RX 9080 XT is the clear pick on raw spec strength, leading by 8.5 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
The Radeon RX 7900 XTX 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 XT 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 — 35.71% more. 28500 vs 21000.
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 XT 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 XTX or AMD - Radeon RX 9080 XT?
AMD - Radeon RX 9080 XT leads the current Mars Score by 8.5 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 XTX if…
AMD - Radeon RX 7900 XTX 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 XT if…
AMD - Radeon RX 9080 XT 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 XTX wins
- No decisive advantages.
Why AMD - Radeon RX 9080 XT wins
- ▲3DMark Time Spy — 35.71% more. 28500 vs 21000.
- ▲CUDA / Stream cores — 33.33% more. 8192 vs 6144.
- ▲Ray tracing cores — 33.33% more. 128 vs 96.
- ▲TDP — 25.00 W less. 330 vs 355.
- ▲Boost clock — 24.00% more. 3100 MHz vs 2500 MHz.
Spec comparison
Core
| Spec | AMD - Radeon RX 7900 XTX | AMD - Radeon RX 9080 XT |
|---|---|---|
| Chipset | Navi 31 | Navi 48 |
| Base clockⓘ | 1900 MHz | 2100 MHzlead |
| Boost clockⓘ | 2500 MHz | 3100 MHzlead |
| CUDA / Stream coresⓘ | 6144 | 8192lead |
| Ray tracing coresⓘ | 96 | 128lead |
Memory
| Spec | AMD - Radeon RX 7900 XTX | AMD - Radeon RX 9080 XT |
|---|---|---|
| VRAMⓘ | 24 GB | 24 GB |
| VRAM typeⓘ | GDDR6 | GDDR7lead |
| Memory busⓘ | 384 bit | 384 bit |
Power & Form
| Spec | AMD - Radeon RX 7900 XTX | AMD - Radeon RX 9080 XT |
|---|---|---|
| TDPⓘ | 355 W | 330 Wlead |
| Recommended PSUⓘ | 800 Wlead | 850 W |
| Length | 287 mmlead | 320 mm |
| Slot size | 2.5-slot | 3-slot |
Benchmarks
| Spec | AMD - Radeon RX 7900 XTX | AMD - Radeon RX 9080 XT |
|---|---|---|
| 3DMark Time Spyⓘ | 21000 | 28500lead |
| DLSSⓘ | false | false |
| FSRⓘ | true | true |
Frequently asked
Which has more VRAM, Radeon RX 7900 XTX or Radeon RX 9080 XT?+
Radeon RX 9080 XT ships with 24GB GDDR7 vs 24GB.
Which scores higher in 3DMark Time Spy, Radeon RX 7900 XTX or Radeon RX 9080 XT?+
Radeon RX 9080 XT scores 28500 vs 21000.
Which draws less power, Radeon RX 7900 XTX or Radeon RX 9080 XT?+
Radeon RX 9080 XT draws 330W TDP vs 355W.