Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Intel - Arc B770 | AMD - Radeon RX 7800 XT |
|---|---|---|
| Ray tracing cores | 32 | 60 |
| TDP | 225 W | 263 W |
| 3DMark Time Spy | 13500 | 16500 |
| Boost clock | 2900 MHz | 2430 MHz |
| CUDA / Stream cores | 4096 | 3840 |
Between the Arc B770 and Radeon RX 7800 XT, the Arc B770 comes out ahead in tdp / boost clock, while the Radeon RX 7800 XT wins on ray tracing cores / 3dmark time spy. Overall, the Arc B770 scores 64.2 and the Radeon RX 7800 XT scores 63.9 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (64.2 vs 63.9). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the Arc B770 if you care most about tdp / boost clock. The biggest gaps in its favor are tdp, boost clock, cuda / stream cores. The single most decisive one: TDP — 38.00 W less. 225 vs 263.
Pick the Radeon RX 7800 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, 3dmark time spy. The single most decisive one: Ray tracing cores — 87.50% more. 60 vs 32.
Both ship with comparable vram, memory bus, dlss, so those specs do not 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 says both are well-rounded; the differences are about trade-offs, not quality.
Which should you buy: Intel - Arc B770 or AMD - Radeon RX 7800 XT?
Intel - Arc B770 leads the current Mars Score by 0.3 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 Intel - Arc B770 if…
Intel - Arc B770 has the measurable edge on tdp w, boost clock mhz, cuda cores.
Choose AMD - Radeon RX 7800 XT if…
AMD - Radeon RX 7800 XT has the measurable edge on ray tracing cores, timespy score.
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 Intel - Arc B770 wins
- ▲TDP — 38.00 W less. 225 vs 263.
- ▲Boost clock — 19.34% more. 2900 MHz vs 2430 MHz.
- ▲CUDA / Stream cores — 6.67% more. 4096 vs 3840.
Why AMD - Radeon RX 7800 XT wins
- ▲Ray tracing cores — 87.50% more. 60 vs 32.
- ▲3DMark Time Spy — 22.22% more. 16500 vs 13500.
Spec comparison
Core
| Spec | Intel - Arc B770 | AMD - Radeon RX 7800 XT |
|---|---|---|
| Chipset | BMG-G31 | Navi 32 |
| Base clockⓘ | 2400 MHzlead | 1295 MHz |
| Boost clockⓘ | 2900 MHzlead | 2430 MHz |
| CUDA / Stream coresⓘ | 4096lead | 3840 |
| Ray tracing coresⓘ | 32 | 60lead |
Memory
| Spec | Intel - Arc B770 | AMD - Radeon RX 7800 XT |
|---|---|---|
| VRAMⓘ | 16 GB | 16 GB |
| VRAM typeⓘ | GDDR6 | GDDR6 |
| Memory busⓘ | 256 bit | 256 bit |
Power & Form
| Spec | Intel - Arc B770 | AMD - Radeon RX 7800 XT |
|---|---|---|
| TDPⓘ | 225 Wlead | 263 W |
| Recommended PSUⓘ | 650 Wlead | 700 W |
| Length | 280 mm | 267 mmlead |
| Slot size | 2-slot | 2.5-slot |
Benchmarks
| Spec | Intel - Arc B770 | AMD - Radeon RX 7800 XT |
|---|---|---|
| 3DMark Time Spyⓘ | 13500 | 16500lead |
| DLSSⓘ | false | false |
| FSRⓘ | true | true |
Frequently asked
Which has more VRAM, Arc B770 or Radeon RX 7800 XT?+
Radeon RX 7800 XT ships with 16GB GDDR6 vs 16GB.
Which scores higher in 3DMark Time Spy, Arc B770 or Radeon RX 7800 XT?+
Radeon RX 7800 XT scores 16500 vs 13500.
Which draws less power, Arc B770 or Radeon RX 7800 XT?+
Arc B770 draws 225W TDP vs 263W.