Which one would be better for CF? Also, would the Gigabyte fit in an Antec 300? Both are stock clocked but Gigabyte has 3 fans and keeps the GPU cooler than the Sapphire dual fan version but the Sapphire is almost 2 inches shorter.
i have one gigabyte 6950 and it fits in my antec 300. Crossfire would be harder to fit though as if you have more than 2 hard drives it prob wont fit due to the hd enclosure generally being right next to the pci-e slots. I recommend a larger case if going crossfire as you current one will probably heat up the case like crazy.
Coul you link them ?
The HD 6950 Won the best purchase hammer by tom's in the HD 6950s round up.
So for the performance it's great and for the cooling it's great as well, but really there's no much difference between it and the Sapphire one.
In Most cases the unlockable HD 6950s are 2 GB versions with Dual Bios Switch, and those were disappeared from the market the HD 6950 Toxic is easy unlockable but it will produce more heat and noise it's much more reference card.