I believe scotten is half right about BFG cards, the versions with the dual fans are the ones that suck, the very original(like when it first came out last summer) that has the single fan design is the good one, i bought one at that time and am currently running 410/1100 on a stock cooler with my own 1.4v modded BIOS. It auto detects at 419/1100, but heats up to much, so i'm waiting for a better cooler. Also i've read several user reviews(such as newegg etc..) on the most recent BFG OC GT's and many have reported 420's and even up to 445 with water cooling. So BFG is not necessarily a bad brand for OC, only if you get the inbetween version with the sucky cooler. PNY is another story, have no experience with them what so ever, and they are not the most expensive or quality filled brand, so i wouldn't doubt their oc limitations. I would still reccommend BFG over Asus(if you get the newest cards, check with the vender before buying), for some reason i have Never had good luck oving their cards, love their mobo's and features and stuff, just never had good oc results on their cards. Not only that BFG gives you a life time warranty, so if you damage something and are able to flash back, you get a new card.
Asus A8V Deluxe(rev. 2.00) / A64 3200 (winchester) / 1024mb OCZ DDR500 (2.5-3-3-8) / BFG 6800GT@stock / Baracuda 120GB / Lian-Li PC-65 / Syncmaster 700NF / OCZ Power Stream 520
Asus A8V Deluxe(rev. 2.00) / A64 3200 (winchester) / 1024mb OCZ DDR500 (2.5-3-3-8) / BFG 6800GT@stock / Baracuda 120GB / Lian-Li PC-65 / Syncmaster 700NF / OCZ Power Stream 520