In answer to the two posts above, it depends to an extent what you're playing... if you're CPU bound a 970 won't be an upgrade at all. If you're totally GPU bound a single 970 will be a huge upgrade.
A 970 will be a decent upgrade, but I suspect most games will end up being CPU bound and wasting some of the potential - I'd consider dropping a generation or two and getting a 770 or similar, unless you intend this as a temporary measure and will use the 970 in a full rebuild this year. It would still be an excellent upgrade, but would be around half the price.
A 970 will be a decent upgrade, but I suspect most games will end up being CPU bound and wasting some of the potential - I'd consider dropping a generation or two and getting a 770 or similar, unless you intend this as a temporary measure and will use the 970 in a full rebuild this year. It would still be an excellent upgrade, but would be around half the price.