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AMD 965 X4 bottleneck 6950 crossfire?

post #1 of 19
Thread Starter 
Hello guys, how u doing?

So I'm about to buy 2x6950 from HIS to run on crossfire mode, and i want to know if my system can handle it:

- Asus M4A99X EVO
- AMD 965 X4 3.4 GHZ
- 800W Corsair GS800
- HIS 6950 1GB Crossfire
- 4GB DDR3 RAM
- Windows 7 64-bit


My concerns is more about the PSU and CPU.

Thanks!

Edit: If it bottleneck just a bit, there's a problem in playing with it?
post #2 of 19
your psu is good for crossfire but you amd cpu is crap. you will need to get a 1155 mobo and a i5 2500k.
post #3 of 19
it depends on what res are you playing at and what games or how many frames per second you want
post #4 of 19
Quote:
Originally Posted by koniu777;15325406 
your psu is good for crossfire but you amd cpu is crap. you will need to get a 1155 mobo and a i5 2500k.

Lol.... Look @ this fanboy.

If you get 2 then you will see a bottleneck.
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post #5 of 19
way to class it up kunu. Personally I would spring for these http://www.newegg.com/Product/Product.aspx?Item=N82E16814127575 They are very good unlockers to 6970's, and the Twin Frozrs are awesome. Also, you don't want to buy 1gb cards for x-fire, as you will only be utilizing 1 gb memory between the two, trust me, I am in that position with my Hawks. Your Powersupply will be fine. You will bottleneck on that processor but not anything you would notice, you just wouldnt be utilizing the full potential of your cards, but with that setup you cant justifiy a bulldozer upgrade with all of it's b.s. , so unless you want thuban, its best to sit on it until the next stepping of bulldozer comes out and see if they shake out.
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post #6 of 19
Quote:
Originally Posted by Azuredragon1;15325421 
it depends on what res are you playing at and what games or how many frames per second you want

^this. It really depends on which games you play.

Here is a link to a review comparing phenom II vs SB with SLI. In some games it makes a big difference, in some it doesn't. If you all ready have your x4 rig, and the card on the way, give it a go, then compare your results with somebody with SB, and crossfire 6950's. Chances are you will love it, and the results won't be that different that it will justify the cost to switch platforms.
post #7 of 19
Yes there will be a bottleneck, but it will be small/infrequent unless you play a lot of RTS games like Starcarft II or older games/obvious console ports that only use 1 or 2 CPU threads. However, even in the troublesome games most of the time the bottleneck will occur above 60 FPS making it much less of a big deal.

If you tell us your gaming plans it will be easier to help you.
post #8 of 19
Quote:
Originally Posted by WizrdSleevz;15325426 
Lol.... Look @ this fanboy.

If you get 2 then you will see a bottleneck.


i learned my lesson the hard way, i have crossfire 6950s and almost all my games would run like crap on a X4 975be, so i did the right thing and sold the cpu/mobo and got myself a processor that would not bottleneck my cards. Its not my fault AMD makes crap cpu chips that dont support crossfire technology.
Edited by koniu777 - 10/15/11 at 8:51pm
post #9 of 19
Upgrading to a 2500k would definitely be a better option!
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post #10 of 19
Not intending to hijack the thread but I've got the same cpu with crossfired 5870's and I noticed in the BF3 beta my cpu was maxed out on all cores.... will this cpu be significantly bottlenecking my 5870 crossfire performance?

...might be time to upgrade to the 2600K
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