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FX-8120 OC Help

post #1 of 33
Thread Starter 
Hello, I am very new to overclocking and I am hoping to get my 8120 to 4GHz or 4.2GHz. I am suffering from very sudden FPS drops in BF3 on B2k maps and hope this will remedy the situation. Any links or info on where to get started would be awesome.

Thanks,
-AtomsK
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post #2 of 33
Upgrade your graphics. BF3 is a very graphics heavy game. A 5870 will get you by, but that's about it.

Your FX chip fares quite well in BF3 because it is such a heavily threaded game, so it's not holding you back.
post #3 of 33
Thread Starter 
I have two 5870's in crossfire... Is that not enough?
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post #4 of 33
how much frames are you pulling with the 5870? what ati software do you currently have installed on your computer? is everything stable currently on the system as we speak? i currently just finished overclocking my brother's fx 8120 on a h50 cooler. its sitting at 4.0 on all 8 cores with cpu-nb at 2400 along with the ht link and rams sitting at 1301 at cas 6. temps barely hit 56c. i was able to get it to 4.2ghz on all cores but the temps goes over 62c. its too hot for my liking.
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post #5 of 33
whats the lowest frames it dips down to? im curious. whats your bf3 setting look like?
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post #6 of 33
Oh, I didn't see you had two. Hmmm... You might consider overclocking them as well.

IIRC, 5870s perform somewhere between a 6870 and 6950 in single card configurations, but in crossfire are more like 6870s in crossfire, maybe a little slower (due to very good 6xxx series scaling.) I think a minor overclock on those would yield some performance.

As for your FX, do you play in larger servers, or smaller servers? Or single player?
Edited by m0bius - 2/17/12 at 3:31pm
post #7 of 33
Thread Starter 
My BF3 settings are on ultra with MSAA X2. I usually pull a steady 60 FPS, but on the newer maps in the action I get these real quick drops to 10 fps then it goes back to normal. I have the latest ATI software, and my system is completely stable at the moment. My video cards have a very modest O.C.


Always 64 player online.
Edited by Atomsk23 - 2/17/12 at 3:51pm
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post #8 of 33
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Always 64 player online.
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post #9 of 33
Well, luckily you could probably hit 4GHz without even increasing the voltages on your FX. My concern is the drop to 10fps in a 64-player map and then returning to 60fps as far as I know cannot be realistically attributed to the CPU. It would be a much more steady but lower fps.

I would adjust your CPU multiplier up one notch at a time and stress test it for about an hour in Prime95. If you get no errors throughout the testing, bump your multi again and repeat the process. Just keep doing that until you get an error in prime. Once you get an error you have several options, go back on multi and test for many hours to ensure absolute stability (I let it run overnight and through work, which is a little more than most people do but 10+ hours in Prime95 says you're pretty stable.) Your next option is to bump your CPU vCore (Voltages) until you stabilize at that multi. Looking at your cooling, you wouldn't be able to set any records, but you will get more than those using stock HSF for sure.

NOTE: Watch your CPU temps closely. You don't want them to go over 62C.

There are many much more in depth guides to overclocking everywhere it seems. FX chips are great at overclocking.
post #10 of 33
Quote:
Originally Posted by m0bius View Post

Upgrade your graphics. BF3 is a very graphics heavy game. A 5870 will get you by, but that's about it.
Your FX chip fares quite well in BF3 because it is such a heavily threaded game, so it's not holding you back.

B2K is very CPU dependant(Not as nearly optimized as standard BF3 maps) and an FX will take a huge hit especially with 5870 CFX.
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