Sapphire
Sapphire Nitro+ Radeon RX 6800 XT
RDNA 2 · 16 GB GDDR6 · 300 W · Nitro+
81
/ 100
From $750
VS
Arc B580 wins by 1
Intel
Arc B580
Battlemage · 12 GB · 190 W · $249
82
/ 100
From $249
Specdex verdict
Arc B580 takes it — here’s why.
In our weighted Specdex score, Sapphire Nitro+ Radeon RX 6800 XT lands at 81 and Arc B580 at 82. That puts Arc B580 ahead by 1 points — a narrow margin driven mostly by its strengths in the categories below.
Pick Sapphire Nitro+ Radeon RX 6800 XT if…
- ✓More VRAM at price tier
- ✓FSR support
- ✓Driver open-source on Linux
Pick Arc B580 if…
- ✓Incredible $/frame at 1440p
- ✓12 GB VRAM on a budget card
- ✓Modern AV1 + XeSS 2
Sapphire Nitro+ Radeon RX 6800 XT 81
vs 82 Arc B580
Score breakdown
Sapphire Nitro+ Radeon RX 6800 XT
81 raster 81
rt 71
ai 66
efficiency 76
Arc B580
82 raster 82
rt 76
ai 80
efficiency 84
Specs side-by-side
| Spec | Sapphire Nitro+ Radeon RX 6800 XT | Arc B580 |
|---|---|---|
| Architecture | RDNA 2 | Xe2 Battlemage |
| VRAM | ▲ 16 GB GDDR6 | 12 GB GDDR6 |
| TBP | 300 W | 190 W |
| Release year | 2020 | — |
| Xe cores | — | 20 |
| Memory bus | — | 192-bit |
Sapphire Nitro+ Radeon RX 6800 XT
Pros
- +More VRAM at price tier
- +FSR support
- +Driver open-source on Linux
Cons
- −RT trails NVIDIA
- −AI ecosystem smaller
- −Driver day-0 bugs
Arc B580
Pros
- +Incredible $/frame at 1440p
- +12 GB VRAM on a budget card
- +Modern AV1 + XeSS 2
Cons
- −Older DX11 titles can struggle
- −Needs resizable BAR
- −No ultra-high-end option
FAQ: Sapphire Nitro+ Radeon RX 6800 XT vs Arc B580
Which is better, Sapphire Nitro+ Radeon RX 6800 XT or Arc B580? +
Arc B580 scores 82 on our weighted rubric — ahead by 1. Your best pick depends on the sub-scores above.
Is Sapphire Nitro+ Radeon RX 6800 XT worth the price? +
At $750, Sapphire Nitro+ Radeon RX 6800 XT delivers a Specdex score of 81 — strongest in raster.
Is Arc B580 worth the price? +
At $249, Arc B580 delivers a Specdex score of 82 — strongest in efficiency.
Does Sapphire Nitro+ Radeon RX 6800 XT or Arc B580 last longer? +
Based on our long-term update and support ratings, both ship with multi-year support. Battery and reliability scores are visible in the breakdown above.