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7970 Matrix Crossfire

HD 7970 isn't that much slower than a R9 290 and when you crossfire you get more performance, if you sell the HD 7970 you are looking for £120 so a second hand R9 290 will cost £100 or if you buy a HD 7970/R9 280x second hand it will cost £120 for more performance than a R9 290, sorry if that is hard to understand a little tired :/
 
Doogles said:
HD 7970 isn't that much slower than a R9 290 and when you crossfire you get more performance, if you sell the HD 7970 you are looking for £120 so a second hand R9 290 will cost £100 or if you buy a HD 7970/R9 280x second hand it will cost £120 for more performance than a R9 290, sorry if that is hard to understand a little tired :/
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That was my plan, get another 7970 for £120-£150 and that'll give me a setup that's more powerful than an R9 290 :D Now I just need to find one :(
 
DJ_Bucho said:
Awesome mate, Snap :D Your running a very similar overall setup to me.

My system:
Asus Crosshair V Formula-Z
AMD FX-8350 cooled by a Corsair H105 (top mounted)
Asus Matrix 7970 Platinum
Housed in a Cooler Master Haf X case.

I see your also running an addition 200mm fan in the top of your case, do you have another 200mm fan mounted on the side? Also what sort of temps are you getting on both cards under general gaming use?

Any info would be greatly received :D
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hi Yes I have replaced the top & side mounted fans with Spectre Pro red LED fans :-
http://www.overclockers.co.uk/showproduct.php?prodid=FG-054-BX&groupid=701&catid=2331&subcat=2335

I have the two top fans extracting and the front/side and the H80i fans pulling air into the case and side 200 mm fan pulls air across the 7970's helping with cooling temps are between 50 to 60 C depending on game and load.

I run in SLI all the time as I have 3 x 24" screens and where ever possible I run games across the 3 screens.
 
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anthony566 said:
hi Yes I have replaced the top & side mounted fans with Spectre Pro red LED fans :-
http://www.overclockers.co.uk/showproduct.php?prodid=FG-054-BX&groupid=701&catid=2331&subcat=2335

I have the two top fans extracting and the front/side and the H80i fans pulling air into the case and side 200 mm fan pulls air across the 7970's helping with cooling temps are between 50 to 60 C depending on game and load.

I run in SLI all the time as I have 3 x 24" screens and where ever possible I run games across the 3 screens.
Click to expand...

So the side 200mm fan pulls air from outside and blows it over the two graphics cards? That's the way I've got mine as well :D
 
DJ_Bucho said:
My system:
Asus Crosshair V Formula-Z
AMD FX-8350 cooled by a Corsair H105 (top mounted)
Asus Matrix 7970 Platinum
Housed in a Cooler Master Haf X case.

I see your also running an addition 200mm fan in the top of your case, do you have another 200mm fan mounted on the side? Also what sort of temps are you getting on both cards under general gaming use?

Any info would be greatly received :D
Click to expand...
Just noticed you mentioning of the CPU...now I don't think it is such a good idea to crossfire 7970 after all, unless you game at above 1920 res.
 
Marine-RX179 said:
Just noticed you mentioning of the CPU...now I don't think it is such a good idea to crossfire 7970 after all, unless you game at above 1920 res.
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At the minute I only game at 1920x1080, but I've got the money together to buy another two monitors so will be going to an eyefinity setup running three 24" 1080p monitors. I play a lot of Borderlands, and am really into racing games and First Person Shooters as well (hence I want to go to an eyefinity setup).
I know an Intel CPU would give me better outright maximum performance, but there's loads of people running crossfire 7970 on AMD CPU's so why don't you think it'll be a good idea for me to do the same?
 
I think he means that graduating to a higher resolution for games will help to reduce the cpu bottleneck. It'll put more stress on the cards rather than the cpu, which in this case is what you want. :)
 
arc@css said:
I think he means that graduating to a higher resolution for games will help to reduce the cpu bottleneck. It'll put more stress on the cards rather than the cpu, which in this case is what you want. :)
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Ah right nice one. I just thought that three monitors running off one card would be a bit much if I wanted everything pretty much maxed out. But with two cards, I should be able to have all the eye candy on display :D
 
DJ_Bucho said:
Ah right nice one. I just thought that three monitors running off one card would be a bit much if I wanted everything pretty much maxed out. But with two cards, I should be able to have all the eye candy on display :D
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I am running at 5760 x 1080 that gives you 63.9" of desk top :) :) :)

I can also confirm that running at 5760 x 1080 on SLI is better than a single card, I am playing Arma 3, Crysis and BF on 3 screens and its nice :)

Also not sure how you have your power supply setup but I have mine pulling air in from under the case ans out the back of the supply and not into or out of the case.

 
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DJ_Bucho said:
Nice one mate, I think I'll keep a look out for another 7970 Matrix then, easier said than done.
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Were are you in the UK ? as I still have the single top fan that I have taken out of my case if you haven't already put a second one in I am sure we can sort something out ??
 
DJ_Bucho said:
At the minute I only game at 1920x1080, but I've got the money together to buy another two monitors so will be going to an eyefinity setup running three 24" 1080p monitors. I play a lot of Borderlands, and am really into racing games and First Person Shooters as well (hence I want to go to an eyefinity setup).
I know an Intel CPU would give me better outright maximum performance, but there's loads of people running crossfire 7970 on AMD CPU's so why don't you think it'll be a good idea for me to do the same?
Click to expand...
Those people might be gaming on a 2560 res monitor or on Eyefinity setup.

I guess it's all down to "how soon" you think you will be upgrading from a single 1920 res monitor to 3 of them.

For a single 1920 res monitors, in games that don't use more than 4 cores even a single 7970 would frequently get bottlenecked by the FX8350.

If you are not going to go 3 monitors for gaming till sometime next year, then it might worth you to stick with the single 7970 for now, and grab a 20nm next gen flagship card along with the new monitors. It's also worth bearing in mind that crossfire don't always scale well, especially for non-AAA titles.
 
anthony566 said:
Also not sure how you have your power supply setup but I have mine pulling air in from under the case ans out the back of the supply and not into or out of the case.
Click to expand...

I've got my PSU setup so that it draws cool air in from under the case and the blows the warm air out of the back, so sounds the same as you matey :) What graphics cards are you running with that triple screen setup mate, that looks awesome :D
 
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