2 SLI 670s or 1 AMD 7990?

Solution
SLI is the better solution right now. AMD is making improvements on the frame latency issue, and wil lprobably catch up to Nvidia in the next year.

For Dual GPU systems, SLI.


This is an old mantra that needs to die out. It just doesn't hold up to logic anymore.

The frame latency for SLI is so close to a single card it's unnoticeable.

People argue that buying a single stronger card give you an upgrade path later. That doesn't make any sense either.

Say you spend $400 on a 770, and two years from now, buy a second one for $200. You've spent $600 in total.

I buy a pair of 760's now for $500 and enjoy much better gaming performance for those two years. After two years, I sell the 760's for $250 total, and buy two 770's for $400. I've spent $650, and for that extra $50 I've had much better gaming performance than the 770 solution for two years, and I match it now.

Course, you don't even really need to upgrade the second build....2 760's aren't far behind 2 770's.
 

andrewcarr

Distinguished
It's just my personal opinion. Some games (very few I'll admit) don't support dual graphics cards.

In general you will have a few more problems too, for example when a game is first released there tends to be the most problems until the next software update. Although that can sometimes be said for both single and dual GPU configurations.
 


Yeah, nothing wrong with that.

When asking someone buying a new system what games they want to play, though, I've never come across anyone that shouted "Grid 2!" :)
 


Any game that needs that much horsepower either has SLI profiles out of the box, or they are added faster than a greyhound skiing downhill with a rocket stuffed up it's rear.