generaly i know PCIe3 is supposed to be an all around bug fix to pcie 2 however, i already have a 6970 and dk how to afford a 7970 at this time, would 2 6970s (i already have 1, add another) costing me around 250-350, altimatly running post cross fire at 4 gb going to be more ore less powerful than a 7970. i know with the 7000s new frame work also that might make it a bit better to boot. anyways, help is appreciated
According to the reviews, a single 6990 (dual GPU card, requires Crossfire drivers) is generally much more powerful than a 7970. A pair of 6970s in Crossfire should outperform a single 6990.
Is your PSU up to two high-powered cards? You'd need two 6 pin PCI-E power connectors, plus two 8 pin. The manufacturers recommend a minimum of 550W for a single card. Adding a second card, that'd probably be at least 800W. 850+ would be better.
Downside to dual 6970s: Crossfire drivers, power & heat.
The DX11.1 and PCI-E 3 capabilities of the 7970 are of little consequence at the moment.
i would be fine in all other areas,i have more 8 pins and 6 pins for graphics cards. im looking at buying a new mobo which has 4 pcie 16 slots, 3 of which are pcie3, so if i ever upgrade i could, but i should be good with 2 6970s.
now i do have to ask, people say that cross fire has more problems than benefits, heat etc. shouldn't be a problem, size and space definitely wont be a problem. so what do people mean?
Personally ,I have just set up Two Gpu's for X-fire
I actually fixed my cards in a position heat wont be a problem
I use two different brand name cards but same make 6870
The Msi version comes with a almost 2 inch bridge which allowed me to go inbetween slots basicly i leaped over two slots spaces and have a 2 inch gap between Gpu's
Heat has not been a issue nor has the drivers so far I been playing many games and have expeirence Accelerated play beyond the normal
Only problem i can think of in crossfire is finding a good clock speed for the Gpu's to operate in Tandem
Other then that it has been pretty Excellent
Also if you are ordering a board with more slots it will defently help you with X-fire spacing and allow you to skip over for a better cooling solution
the board is designed for "crossXfire / SLI" and the seperation is prety large so i think i would need an elongated CrossXfire bridgePersonally ,I have just set up Two Gpu's for X-fire
I actually fixed my cards in a position heat wont be a problem
I use two different brand name cards but same make 6870
The Msi version comes with a almost 2 inch bridge which allowed me to go inbetween slots basicly i leaped over two slots spaces and have a 2 inch gap between Gpu's
Heat has not been a issue nor has the drivers so far I been playing many games and have expeirence Accelerated play beyond the normal
Only problem i can think of in crossfire is finding a good clock speed for the Gpu's to operate in Tandem
Other then that it has been pretty Excellent
Also if you are ordering a board with more slots it will defently help you with X-fire spacing and allow you to skip over for a better cooling solution
http://www.amazon.com/ATI-CrossFire-.../dp/B003NLGR7I
There you go
It will be the same size im useing it goes from the 1st to 3rd slot more then enough breathing room
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