I have been using gpu tweak with my 6950. I like it a lot better than smartdoctor (sd never made it past an hour before it was uninstalled). The one thing I wish they would have would be an option for sloped fan ramp but you can put as many steps in there that you want so it works fine.
Are the games all at the same settings as with the 280 because looking at typical benchmark scores, the 6950 should give you roughly double the frames. I think most games will detect what settings are "best" when you first load them so you are probably at higher settings than what you were with...
12.1 seems to run fine. The main thing is to make sure you try out the beta flash.
http://hardforum.com/showthread.php?t=1676311&highlight=driver+stopped+responding+flash
if you have any issues.
Is your card a reference card? Should have AMD on the board by the PCIe connector.
Seems that some are laser cut so you cannot unlock them.
Some cannot be unlocked with conventional methods. Search for the "chewing gum 6950". No idea if it is reliable.
Look on the motherboard. All the ports have labels next to them. You have the manual page. Look, compare, find and plug in. The next page in the manual should have the Marvell ports on it.
You want 0/1 as those run off the Intel controller. The other 6GBs ports are Marvell. Intel usually has a little better performance however some boards, Gigabyte has released updated BIOS that supposedly improves Marvell performance.
Also, make sure the Crucial has the latest firmware 309 or newer
I have an Asus DCII 6950 that is a 3-slot and around 295mm long iirc. I think the companies try to keep the reference design within the typical length of cards and it is usually the ones with more extreme cooling that are longer in length. No clue what is coming ahead as I don't stay in the...
Components can be fine one minute and not working the next. I have seen a new Corsair PSU go bad over night while in sleep mode. I have had my HT DVD player stop reading disc 2 hours after I last turned it off due to a bad transport. Things happen. Do as Seithennin suggested and try your...