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AMD Crossfire 6870? on a 960T? - Page 3

post #21 of 34
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Sure will do rolleyes.gif im clocking 3,5ghz now and its at 27 degrees , il do a stock test when i have more time wink.gif


On-topic, im realy unsure if placing a second 6870 GPU would be good redface.gif i see more disadvantages then advantages .....
     
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post #22 of 34
I'm wanting to do the same thing. I was wondering if there where any issues with only having 1gb of VRAM when using 1080p?
    
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post #23 of 34
Quote:
Originally Posted by Barbecuesaus View Post

Sure will do rolleyes.gif im clocking 3,5ghz now and its at 27 degrees , il do a stock test when i have more time wink.gif
On-topic, im realy unsure if placing a second 6870 GPU would be good redface.gif i see more disadvantages then advantages .....
27 degrees,now that's completely different story from below 20C wink.gif Crossfire is good if you have the CPU to go with it.I'm pretty sure,even with my i5-3570k,i'll need to 24/7 run 4.5Ghz to not experience bottleneck,what's left for the Phenom x4,i guess you'll have to go 5.00Ghz for small to no bottleneck biggrin.gif
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post #24 of 34
Quote:
Originally Posted by Barbecuesaus View Post

Sure will do rolleyes.gif im clocking 3,5ghz now and its at 27 degrees , il do a stock test when i have more time wink.gif
On-topic, im realy unsure if placing a second 6870 GPU would be good redface.gif i see more disadvantages then advantages .....

People are scaring you away.

I assure you your PSU is easily able to do both of them. If you saw a graph of a single 6870 pulling 300W that is going to be from the wall and not what the PSU is actually using. There is an efficiency calculation that needs to be taken into place.. So if the PSU in question was 80% efficient the load would have been ~240W which is probably the case.

Also, as far as heat goes. All you need to do is get a reference 6870 like I said on the first page so it will exhaust hot air out the back and put your XFX on bottom. Temps will still be fine unless your ambient is through the roof. For CrossFire you only need the same GPU series, they do not need to be manufactured by the same company. EX; You could XFire a 6850 by Asus with a 6870 by XFX. (Just an example).

And, as far as micro-stutter/driver issues/etc goes. Now this is probably the only thing you should even be concerned with. While this is a very possible issue, AMD drivers have gotten better than they were in the past with the older series of cards. It's impossible to tell you if you'll experience micro-stutter or not but I can tell you there is a lot of people that can't even notice it. Since you don't know what it is based on previous posts in this thread, here is a link:

http://en.wikipedia.org/wiki/Micro_stuttering

As far as your CPU goes and bottlenecking, yeah it's not the best but you shouldn't bottleneck on most games. There are some very CPU intense games that will bottleneck a little it but it won't be anything bad. You'll be fine. thumb.gif
post #25 of 34
Thread Starter 
sweet stil not sure tho redface.gif
If i understand this correctly a setup like that would not bottleneck on GPU heavy games? (until its limit of power?) i kinda think i saw this the wrong way..... rolleyes.gif
     
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post #26 of 34
The 6800s scale very well in crossfire. It is a 100% increase provided you actually need the power and its not a brand new game that needs a driver patch. For instance, I always use VSYNC which will actually lower the temps on your cards.
Edited by anothergeek - 12/11/12 at 1:43pm
    
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post #27 of 34
I notice no micro studdering at all never have. Ill tell you this i played GW2 and my old 956 made the game unplayable in lions arch i was getting cpu load of 80% or more and gpu load of 60%. In battlefield 3 my cpu was maxed out at 99% load on all cores at 4 ghz my gpus ran at 65-70%. My i5 at stock speed iam getting 60+ fps in lions arch in GW2 and my gpus in BF3 are at 99% usage and cpu is at 60% roughly. As far as 1 gig vram i have noticed no limit except in BF3. To the OP i would suggest a single powerful card to the member with the i5 i say go for it you will not regret it.
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post #28 of 34
post #29 of 34
Quote:
Originally Posted by rquinn19 View Post

Here's a review that might interest you. http://www.guru3d.com/articles_pages/radeon_hd_7970_cpu_scaling_performance_review,1.html

that is a year old reference. you can add about 8000-9000 points in Vantage for each and about 2000-3000 points in 11. kinda misleading.
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post #30 of 34
Quote:
Originally Posted by rdr09 View Post

that is a year old reference. you can add about 8000-9000 points in Vantage for each and about 2000-3000 points in 11. kinda misleading.

I'm not understanding your point. What's misleading? The concern here is a bottleneck. I play at 1200p. That article shows that in the majority of games at that resolution the processor is doesn't make that big of a difference in fps. You stated yourself in a different thread that the 7950 is close to crossfire 6970's. So if the fps differences are that negligible then the same would go for crossfire 6870s.
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