Between the Arc B770 and Radeon RX 7900 XTX, the Arc B770 comes out ahead in tdp and boost clock, while the Radeon RX 7900 XTX wins on ray tracing cores and 3dmark time spy. Overall, the Arc B770 scores 62.4 and the Radeon RX 7900 XTX scores 71 on our Mars Score.
Which should you buy?
The Radeon RX 7900 XTX is the clear pick on raw spec strength, leading by 8.6 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.
Pick the Arc B770 if you care most about tdp and boost clock. The biggest gaps in its favor are tdp, boost clock.
Pick the Radeon RX 7900 XTX 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, 3dmark time spy, vram, among others.
Both ship with comparable dlss, so those specs don't separate the two — focus on the differences below.
Bottom line: the Radeon RX 7900 XTX is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Intel - Arc B770 wins
- ▲TDP — 130.00 W less. 225 vs 355.
- ▲Boost clock — 16.00% more. 2900 MHz vs 2500 MHz.
Why AMD - Radeon RX 7900 XTX wins
- ▲Ray tracing cores — 200.00% more. 96 vs 32.
- ▲3DMark Time Spy — 55.56% more. 21000 vs 13500.
- ▲VRAM — 50.00% more. 24 GB vs 16 GB.
- ▲CUDA / Stream cores — 50.00% more. 6144 vs 4096.
- ▲Memory bus — 50.00% more. 384 bit vs 256 bit.
Spec comparison
Core
| Spec | Intel - Arc B770 | AMD - Radeon RX 7900 XTX |
|---|---|---|
| Chipset | BMG-G31 | Navi 31 |
| Base clockⓘ | 2400 MHzlead | 1900 MHz |
| Boost clockⓘ | 2900 MHzlead | 2500 MHz |
| CUDA / Stream coresⓘ | 4096 | 6144lead |
| Ray tracing coresⓘ | 32 | 96lead |
Memory
| Spec | Intel - Arc B770 | AMD - Radeon RX 7900 XTX |
|---|---|---|
| VRAMⓘ | 16 GB | 24 GBlead |
| VRAM typeⓘ | GDDR6 | GDDR6 |
| Memory busⓘ | 256 bit | 384 bitlead |
Power & Form
| Spec | Intel - Arc B770 | AMD - Radeon RX 7900 XTX |
|---|---|---|
| TDPⓘ | 225 Wlead | 355 W |
| Recommended PSUⓘ | 650 Wlead | 800 W |
| Length | 280 mmlead | 287 mm |
| Slot size | 2-slot | 2.5-slot |
Benchmarks
| Spec | Intel - Arc B770 | AMD - Radeon RX 7900 XTX |
|---|---|---|
| 3DMark Time Spyⓘ | 13500 | 21000lead |
| DLSSⓘ | false | false |
| FSRⓘ | true | true |
Frequently asked
Which has more VRAM, Arc B770 or Radeon RX 7900 XTX?+
Radeon RX 7900 XTX ships with 24GB GDDR6 vs 16GB.
Which scores higher in 3DMark Time Spy, Arc B770 or Radeon RX 7900 XTX?+
Radeon RX 7900 XTX scores 21000 vs 13500.
Which draws less power, Arc B770 or Radeon RX 7900 XTX?+
Arc B770 draws 225W TDP vs 355W.
Spec-level deep dives
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