I am at the point I am ready to upgrade my GPU. I have the money and I am ready to make the leap. The GPUs I am looking to get are the following:
2 x MSI R6970 Lightning
or
DIAMOND 6990PE54G
I just want to know if I would be better off using 2 card instead of one due to the driver issues. Look at my system specs if you need to know anything about my build.
If this is going to be a final purchase I would likely side with the 6970's.
If there is any remote possibility of later crosfiring 2 6990's I would definitely go with them.
The primary difference I think here would mainly be future expansion, which would still be possible with the 6990 but not so much when you already have 2 6970's.
The performance will be relatively equal from what little I could find comparing the two scenarios online.
As always the single card will likely cause less heat in the case. It's the reason I've quit doing sli/crossfire myself.
The heat produced by two cards working overtime in such a tight space just never jived for me.
Despite really good airflow I was forced to take the side off my case and use a house fan when I was pushing sli in the past myself.
Otherwise the cards hovered dangerously close to shut off temps under stress.
Either or. Also if so inclined you can also Crossfire a 6970 with a 6990 for tri-fire,
My Case and CPU temps are great so I have alot of headroom to go before heat would become a issue.
I once had a 4870x2 with a 4850 in tri-fire for many years. Would my powersupply be good for a tri-fire with a 6970 with a 6990?
I would go for 6970 cfx without second thought. Though to be honest if you game at 1080p there is no need for a second high end gpu
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