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Overclocking problems

Masterdeadly

Masterdeadly

Masterdeadly

Permabanned
Joined
29 Jun 2010
Posts
1,552
Location
England
Hello,

After I received my 7850 I used CCC to overclock from 860 GPU clock to 1050 MHz, 1200 memory clock to 1450Mhz and took the Power control settings to 20%.

I then went to play Super Street Fighter 4 and it looks like the FPS is low. If i go back to default settings on CCC it goes back to being smooth. Have you got any idea why overclocking is making my performance more choppy?

My CPU is an AMD Phenom x4 965 BE @ 3.4GHz could it possibly be bottle necking? I'm stumped so I thought I'd ask the forum.
 
If you go too far on the memory the card will start to lower the timings resulting in a decrease FPS - GDDR5 can also attempt a resend of data if it fails - obvioulsy you get a slowdown if it has to send the data twice ;-). Too far on the core can also result in errors in the processing, resulting in the same issue.

You're supposed to oc a little, then test, then oc a bit more, then test etc - watching your fps/benchmark score increase all the time and you should stop when you notice artifacts/crashes or no fps/score increase.

Don't just set the clocks to someone elses/some reviews successful clocks ;-) You're card might simply not be capable of 1050/1450.
 
Last edited by a moderator:
amigafan2003 said:
If you go too far on the memory the card will start to lower the timings resulting in a decrease FPS - GDDR5 can also attempt a resend of data if it fails - obvioulsy you get a slowdown if it has to send the data twice ;-). Too far on the core can also result in errors in the processing, resulting in the same issue.

You're supposed to oc a little, then test, then oc a bit more, then test etc - watching your fps/benchmark score increase all the time and you should stop when you notice artifacts/crashes or no fps/score increase.

Don't just set the clocks to someone elses/some reviews successful clocks ;-) You're card might simply not be capable of 1050/1450.
Click to expand...

Well after I overclock the card I've been running unigine and getting higher FPS/Scores so I don't understand why the game looks like it's in 25 fps when the benchmarking in Super Street Fighter 4 has an outcome of 300 fps. Maybe it's just SSS4, which would be a shame having to de-clock every time I go on it.
 
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Masterdeadly said:
Well after I overclock the card I've been running unigine and getting higher FPS/Scores so I don't understand why the game looks like it's in 25 fps when the benchmarking in Super Street Fighter 4 has an outcome of 300 fps. Maybe it's just SSS4, which would be a shame having to de-clock every time I go on it.
Click to expand...


Tried setting vsync on?
 
Drop your memory clocks to 1200, keep core at 1050, and try again. You'll only lose about 1-2 fps in heaven, but you might gain a bit by the ram timings tightening up a bit.:)
What brand of card is it mate?
 
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