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6850 cant play high at 1920 x1080

post #1 of 14
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I am running an XFX 6850 on air Oced to 940/1150mhz and my i5 650 at 4ghz on water. I play bf3 at 1920x1080 with settings high(except msaa turned off) . The average fps I get on fraps is around 46 but when things start blowing up, I get minimum fps of 0.

So my question is which is the bottleneck because even after oc, I do see an improvement in average fps but with min fps o still. Tuning it down to medium solves the problem though. By upgrading to a 6950/6970/7970 , will it solve the problem or will the dual core i5 still bottleneck my performance?

Thanks in advance smile.gif
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post #2 of 14
6850 is a fairly low end GPU i'd imagine upgrading to a 6870 would show a marked improvement.
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post #3 of 14
If your going to upgrade don't get a 6870 get atleast a 6950+ if your tight though a 6870 will fix that

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post #4 of 14
GET HD 6870 Crossfire but change that cpu to a i7 860/i5 750
post #5 of 14
Definitely don't upgrade to a 6870. It's barely faster once you take overclocking into account. If you upgrade you'd might as well get a card with more than 1GB of VRAM. BF3 is a VRAM hog. On my system it uses 1.2-1.4GB of VRAM at 2560x1600 with no MSAA.

You should either upgrade to a 6950 now or wait for 7870/7850/Kepler. I'd probably do the latter.
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post #6 of 14
I'd say get another 6850 you could probably snag one used for just over 100 bucks. But I don't think your mobo supports cfx or does it? anyway in your case its not really worth it to upgrade just yet there is some great tech coming out pretty soon and you might want to wait for that.
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post #7 of 14
Thread Starter 
Thanks for the input guys. Just a quick question, I know there are psu calculators and all that but what would you guys recommend for running a single 7970.(doubt my 520watt makes the cut ?)
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post #8 of 14
http://www.techpowerup.com/reviews/ATI/Radeon_HD_6870_CrossFire/1.html

HD 6870 Can reach 590GTX performance


700
700
700
700

And Some Watts less

700

Get an used i5 750....
post #9 of 14
Quote:
Originally Posted by PontiacGTX View Post

http://www.techpowerup.com/reviews/ATI/Radeon_HD_6870_CrossFire/1.html
HD 6870 Can reach 590GTX performance
Get an used i5 750....

Uhm, that can't be right? I can guarantee that a SINGLE HD6870 will not reach a single GTX 580 performance in Battlefield 3 at 1920 x 1080. The CPU won't do any difference. An AMD Phenom II X4 955 stock + a Radeon HD6950 2 Gb. can run it maxed out with MSAA on 4x at 1920 x 1080.


EDIT: Sorry, didn't see it was a i5-650. Read it wrong. - Yup, you might wanna check in to see if you can get a used quad core cheap.

Do one of the following:

01. Grab another 6850 and crossfire it. Performance would be a little better than my 2x 460s, and I can run the game on Ultra with 0-2x MSAA at 1920 x 1080 with both cards OC'ed to 800 Mhz. core and 2000 Mhz. Memory.

02. Get a new or used 6950 2Gb. I can guarantee you that it will run BF3 on Ultra at 1920 x 1080 with MSAA on 4x.
Edited by WhitePrQjser - 1/30/12 at 11:30am
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post #10 of 14
Your dual-core is actually causing more issues for you here than your card right now (w/ this particular game) - if you pickup an i5 750/60 as mentioned, you should see a nice improvement.
Don't expect to be able to play the game on ultra after doing so, but you'll see far more consistent frames along with what you're card is capable of.
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