GPU Comparison
Select up to 2 GPUs to analyze their pricing, performance, and specifications side-by-side.
The Radeon RX 6800 is significantly faster than the Arc B580, leading by roughly 38% in our performance index.
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Radeon RX 6800 vs Arc B580: In-Depth Breakdown
Performance: Radeon RX 6800 vs Arc B580
The Radeon RX 6800 is significantly faster, around 38% ahead of the Arc B580. That gap is enough to move it up a tier: the Radeon RX 6800 is comfortable at 1440p, while the Arc B580 is better matched to 1080p.
Power & Efficiency
The Arc B580 pulls less power (190W vs 250W), so it's the easier card to cool and the lighter load on your PSU. The faster Radeon RX 6800 draws more overall but extracts more performance from each watt — plan for a sturdier power supply if you pick it.
VRAM & Future-Proofing
With 16GB against 12GB, the Radeon RX 6800 has more headroom for 4K textures and memory-hungry creative/AI tasks where the Arc B580's 12GB can fall short.
Generation & Longevity
The Arc B580 is roughly 4 years newer than the Radeon RX 6800 (Battlemage vs RDNA 2), so it generally benefits from a more modern architecture and longer driver-support runway.
Features & Ecosystem
Beyond raw numbers, the Radeon RX 6800 brings AMD FSR upscaling and strong rasterization value, while the Arc B580 offers Intel XeSS upscaling and AV1 encoding. If you lean on upscaling or ray tracing, that ecosystem difference can matter as much as the frame-rate gap.
Which should you buy: Radeon RX 6800 or Arc B580?
The Radeon RX 6800 is the faster card by about 38%. With live pricing limited for this pair, base your decision on the spec differences above — particularly VRAM and power draw — and check current stock before buying.