Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | NVIDIA - GeForce RTX 5070 | AMD - Radeon RX 7900 XT |
|---|---|---|
| Ray tracing cores | 48 | 84 |
| VRAM | 12 GB | 20 GB |
| Memory bus | 192 bit | 320 bit |
| TDP | 250 W | 315 W |
| CUDA / Stream cores | 6144 | 5376 |
| 3DMark Time Spy | 16800 | 18800 |
Between the GeForce RTX 5070 and Radeon RX 7900 XT, the GeForce RTX 5070 comes out ahead in tdp / cuda / stream cores, while the Radeon RX 7900 XT wins on ray tracing cores / vram. Overall, the GeForce RTX 5070 scores 63.9 and the Radeon RX 7900 XT scores 67.2 on our Mars Score.
Which should you buy?
The Radeon RX 7900 XT edges ahead on the Mars Score (63.9 vs 67.2), but the 3.3-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the GeForce RTX 5070 if you care most about tdp / cuda / stream cores. The biggest gaps in its favor are tdp, cuda / stream cores, boost clock, among others. The single most decisive one: TDP — 65.00 W less. 250 vs 315.
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. Its strongest claims are ray tracing cores, vram, memory bus, among others. The single most decisive one: Ray tracing cores — 75.00% more. 84 vs 48.
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.
Which should you buy: NVIDIA - GeForce RTX 5070 or AMD - Radeon RX 7900 XT?
AMD - Radeon RX 7900 XT leads the current Mars Score by 3.3 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 5070 if…
NVIDIA - GeForce RTX 5070 has the measurable edge on tdp w, cuda cores, boost clock mhz.
Choose AMD - Radeon RX 7900 XT if…
AMD - Radeon RX 7900 XT has the measurable edge on ray tracing cores, vram gb, memory bus bit.
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 5070 wins
- ▲TDP — 65.00 W less. 250 vs 315.
- ▲CUDA / Stream cores — 14.29% more. 6144 vs 5376.
- ▲Boost clock — 4.67% more. 2512 MHz vs 2400 MHz.
- ▲Has DLSS.
Why AMD - Radeon RX 7900 XT wins
- ▲Ray tracing cores — 75.00% more. 84 vs 48.
- ▲VRAM — 66.67% more. 20 GB vs 12 GB.
- ▲Memory bus — 66.67% more. 320 bit vs 192 bit.
- ▲3DMark Time Spy — 11.90% more. 18800 vs 16800.
Spec comparison
Core
| Spec | NVIDIA - GeForce RTX 5070 | AMD - Radeon RX 7900 XT |
|---|---|---|
| Chipset | GB205 | Navi 31 |
| Base clockⓘ | 2325 MHzlead | 1500 MHz |
| Boost clockⓘ | 2512 MHzlead | 2400 MHz |
| CUDA / Stream coresⓘ | 6144lead | 5376 |
| Ray tracing coresⓘ | 48 | 84lead |
Memory
| Spec | NVIDIA - GeForce RTX 5070 | AMD - Radeon RX 7900 XT |
|---|---|---|
| VRAMⓘ | 12 GB | 20 GBlead |
| VRAM typeⓘ | GDDR7lead | GDDR6 |
| Memory busⓘ | 192 bit | 320 bitlead |
Power & Form
| Spec | NVIDIA - GeForce RTX 5070 | AMD - Radeon RX 7900 XT |
|---|---|---|
| TDPⓘ | 250 Wlead | 315 W |
| Recommended PSUⓘ | 650 Wlead | 750 W |
| Length | 267 mmlead | 276 mm |
| Slot size | 2-slot | 2.5-slot |
Benchmarks
| Spec | NVIDIA - GeForce RTX 5070 | AMD - Radeon RX 7900 XT |
|---|---|---|
| 3DMark Time Spyⓘ | 16800 | 18800lead |
| DLSSⓘ | truelead | false |
| FSRⓘ | false | truelead |
Frequently asked
Which has more VRAM, GeForce RTX 5070 or Radeon RX 7900 XT?+
Radeon RX 7900 XT ships with 20GB GDDR6 vs 12GB.
Which scores higher in 3DMark Time Spy, GeForce RTX 5070 or Radeon RX 7900 XT?+
Radeon RX 7900 XT scores 18800 vs 16800.
Which draws less power, GeForce RTX 5070 or Radeon RX 7900 XT?+
GeForce RTX 5070 draws 250W TDP vs 315W.