Between the Radeon RX 7900 XT and Radeon RX 9070, the Radeon RX 7900 XT comes out ahead in cuda / stream cores and ray tracing cores, while the Radeon RX 9070 wins on tdp and boost clock. Overall, the Radeon RX 7900 XT scores 66.7 and the Radeon RX 9070 scores 63.1 on our Mars Score.
Which should you buy?
The Radeon RX 7900 XT edges ahead on the Mars Score (66.7 vs 63.1), but the 3.6-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the Radeon RX 7900 XT 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, ray tracing cores, vram, among others.
Pick the Radeon RX 9070 if you care most about tdp and boost clock. Its strongest claims are tdp, boost clock.
Both ship with comparable dlss, so those specs don't separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity tells you both are well-rounded; the differences are about trade-offs, not quality.
Why AMD - Radeon RX 7900 XT wins
- ▲CUDA / Stream cores — 50.00% more. 5376 vs 3584.
- ▲Ray tracing cores — 50.00% more. 84 vs 56.
- ▲VRAM — 25.00% more. 20 GB vs 16 GB.
- ▲Memory bus — 25.00% more. 320 bit vs 256 bit.
- ▲3DMark Time Spy — 11.90% more. 18800 vs 16800.
Why AMD - Radeon RX 9070 wins
- ▲TDP — 95.00 W less. 220 vs 315.
- ▲Boost clock — 5.00% more. 2520 MHz vs 2400 MHz.
Spec comparison
Core
| Spec | AMD - Radeon RX 7900 XT | AMD - Radeon RX 9070 |
|---|---|---|
| Chipset | Navi 31 | Navi 48 |
| Base clockⓘ | 1500 MHz | 2070 MHzlead |
| Boost clockⓘ | 2400 MHz | 2520 MHzlead |
| CUDA / Stream coresⓘ | 5376lead | 3584 |
| Ray tracing coresⓘ | 84lead | 56 |
Memory
| Spec | AMD - Radeon RX 7900 XT | AMD - Radeon RX 9070 |
|---|---|---|
| VRAMⓘ | 20 GBlead | 16 GB |
| VRAM typeⓘ | GDDR6 | GDDR6 |
| Memory busⓘ | 320 bitlead | 256 bit |
Power & Form
| Spec | AMD - Radeon RX 7900 XT | AMD - Radeon RX 9070 |
|---|---|---|
| TDPⓘ | 315 W | 220 Wlead |
| Recommended PSUⓘ | 750 W | 650 Wlead |
| Length | 276 mmlead | 287 mm |
| Slot size | 2.5-slot | 2-slot |
Benchmarks
| Spec | AMD - Radeon RX 7900 XT | AMD - Radeon RX 9070 |
|---|---|---|
| 3DMark Time Spyⓘ | 18800lead | 16800 |
| DLSSⓘ | false | false |
| FSRⓘ | true | true |
Frequently asked
Which has more VRAM, Radeon RX 7900 XT or Radeon RX 9070?+
Radeon RX 7900 XT ships with 20GB GDDR6 vs 16GB.
Which scores higher in 3DMark Time Spy, Radeon RX 7900 XT or Radeon RX 9070?+
Radeon RX 7900 XT scores 18800 vs 16800.
Which draws less power, Radeon RX 7900 XT or Radeon RX 9070?+
Radeon RX 9070 draws 220W TDP vs 315W.
Spec-level deep dives
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