RX 6600 (used) vs Arc B570

Used or new? A used RX 6600 8GB is the kind of card that shows up cheap on eBay, and the Arc B570 10GB is what you'd buy new at a similar budget. In the Tom's Hardware GPU hierarchy (June 2026), the RX 6600 8GB (used) averages 25 fps at 1440p and 15 at 4K; the Arc B570 10GB averages 44 and 20. At 1080p the averages are 52 and 64 fps. That makes the Arc B570 10GB about 76% faster at 1440p (23% at 1080p, 33% at 4K).

Memory differs: 8GB on the RX 6600 8GB (used) against 10GB on the Arc B570 10GB. 8GB cards increasingly need lower texture settings in new games at 1440p, and that won't show up in an average fps number. In games the RX 6600 8GB (used) draws about 132W and the Arc B570 10GB about 150W; power supply advice is about 450W (our rule of thumb) vs about 450W (our rule of thumb). The RX 6600 8GB (used) is about 240mm long, 2 slots thick and uses standard 8-pin power; the Arc B570 10GB is about 250mm long, 2 slots thick with standard 8-pin power.

For upscaling, the RX 6600 8GB (used) uses FSR 3 and the Arc B570 10GB uses XeSS; support varies by game. A used card's real price swings a lot by listing, so compare the live price here with the condition in the photos.

Our take: used cards save money but usually lose the store warranty, so buy from sellers with returns and check the photos. If the used card isn't clearly cheaper per frame, buy new.