Between the Arc B770 and GeForce RTX 4090, the Arc B770 comes out ahead in tdp and boost clock, while the GeForce RTX 4090 wins on cuda / stream cores and ray tracing cores. Overall, the Arc B770 scores 62.4 and the GeForce RTX 4090 scores 80.3 on our Mars Score.
Which should you buy?
The GeForce RTX 4090 is the clear pick on raw spec strength, leading by 17.9 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 GeForce RTX 4090 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 cuda / stream cores, ray tracing cores, 3dmark time spy, among others.
There are no meaningful ties on the headline specs — every popular-comparison metric has a winner.
Bottom line: the GeForce RTX 4090 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 — 225.00 W less. 225 vs 450.
- ▲Boost clock — 15.08% more. 2900 MHz vs 2520 MHz.
Why NVIDIA - GeForce RTX 4090 wins
- ▲CUDA / Stream cores — 300.00% more. 16384 vs 4096.
- ▲Ray tracing cores — 300.00% more. 128 vs 32.
- ▲3DMark Time Spy — 107.41% more. 28000 vs 13500.
- ▲VRAM — 50.00% more. 24 GB vs 16 GB.
- ▲Memory bus — 50.00% more. 384 bit vs 256 bit.
- ▲Has DLSS.
Spec comparison
Core
| Spec | Intel - Arc B770 | NVIDIA - GeForce RTX 4090 |
|---|---|---|
| Chipset | BMG-G31 | AD102 |
| Base clockⓘ | 2400 MHzlead | 2235 MHz |
| Boost clockⓘ | 2900 MHzlead | 2520 MHz |
| CUDA / Stream coresⓘ | 4096 | 16384lead |
| Ray tracing coresⓘ | 32 | 128lead |
Memory
| Spec | Intel - Arc B770 | NVIDIA - GeForce RTX 4090 |
|---|---|---|
| VRAMⓘ | 16 GB | 24 GBlead |
| VRAM typeⓘ | GDDR6 | GDDR6Xlead |
| Memory busⓘ | 256 bit | 384 bitlead |
Power & Form
| Spec | Intel - Arc B770 | NVIDIA - GeForce RTX 4090 |
|---|---|---|
| TDPⓘ | 225 Wlead | 450 W |
| Recommended PSUⓘ | 650 Wlead | 850 W |
| Length | 280 mmlead | 304 mm |
| Slot size | 2-slot | 3-slot |
Benchmarks
| Spec | Intel - Arc B770 | NVIDIA - GeForce RTX 4090 |
|---|---|---|
| 3DMark Time Spyⓘ | 13500 | 28000lead |
| DLSSⓘ | false | truelead |
| FSRⓘ | truelead | false |
Frequently asked
Which has more VRAM, Arc B770 or GeForce RTX 4090?+
GeForce RTX 4090 ships with 24GB GDDR6X vs 16GB.
Which scores higher in 3DMark Time Spy, Arc B770 or GeForce RTX 4090?+
GeForce RTX 4090 scores 28000 vs 13500.
Which draws less power, Arc B770 or GeForce RTX 4090?+
Arc B770 draws 225W TDP vs 450W.
Spec-level deep dives
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