1gb or 2gb? not using eyefinity
I would suggest the 2GB vram version card. I use a 2gb 6950 Sapphire and it's great. 1GB is really cutting it to close playing at 1080p. I've noticed texture issues on my 4870x2 (1gb ddr5) with a few games at 1080p // with catalyst ai up. Mainly APB
Granted you'll get a new monitor for Christmas I "strongly" suggest the 2GB gddr5 card.
done bfbc2 // 3, Crysis, Dragon Age II, Metro 2033, Dues Ex. All on "high" settings @ 1080p and it's all been smooth.