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real world performance is slower after increasing the fsb speed

post #1 of 8
Thread Starter 
hello, need help.

1 - i have an amd555be3.2 unlocked to x4 - OK
2 - used FC2 as a bench - get 43fps ave
3 - increased the fsb freq - ave fps is lower - why?
4 - increased multiplier - ave fps is slower - why?

so, why is the fps slower when i up the cpu speed? i have messed about with all sorts of settings from the stock settings in bios to silly voltages and fsb freqs. it passes load testing at 3.7 but the real world fps doesn't go up at all. any ideas?
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AMD555BE3.2 (B55X4) Asus M4A88T-M Sapphire HD5770 4gb DDR31033 
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Seagate 250gb SATA WIN 7 64 500watt Xigmatek 
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CPUMotherboardGraphicsRAM
AMD555BE3.2 (B55X4) Asus M4A88T-M Sapphire HD5770 4gb DDR31033 
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Seagate 250gb SATA WIN 7 64 500watt Xigmatek 
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post #2 of 8
http://www.overclock.net/specs.php

Please fill out your specs by clicking on the above link, then we can help you a bit better.

My guess is that in upping your FSB you may have created some level of instability. Its really hard to tell without knowing your hardware and what your settings are and how you arrived at them.
post #3 of 8
Thread Starter 
spec posted. i dont really do forums, but having moved from intel to amd and trying to push the cpu is really pulling my chain. i unlocked the 2 dormant cores, can adjust pretty much anything in the bios - truth is *** are all the settings? my last mobo was easy. lol. i need help!
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AMD555BE3.2 (B55X4) Asus M4A88T-M Sapphire HD5770 4gb DDR31033 
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post #4 of 8
Your in the wrong forum section, so your thread may be moved by a moderator if they deem it necessary.

At any rate, what have you adjusted/changed in the bios so far?
I recommend that you read some of the stickys here to help with your knowledge of overclocking, it may give you a better understanding as to what you need to do.

As far as benching goes, I would recommend that you pick up these three programs

Prime95
Coretemp
CPUz

Run Prime95 in conjuction with Coretemp, prime95 being your stressing program, and coretemp your temp monitor. CPUz can be used to monitor your Vcore after Vdroop and Vdrop.

Let me know when you have all those things
post #5 of 8
Thread Starter 
i have those resources, thanks. to be clear, everything runs fine - benching, playing games for hours and never a crash.

my basic questions is, in a reworded way, this: phenom ll x2 3.2 overclocked to a x4 3.5 using the asus auto tune. this gives about 43fps ave on FC2. if i up the cpu to say 3.7 it still passes all the bench and load tests, still plays all the games etc, however the fps ave drops in the same FC2 bench test. just wondered why?

what section in this forum might be interested in a question like this, if this is the wrong one?
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AMD555BE3.2 (B55X4) Asus M4A88T-M Sapphire HD5770 4gb DDR31033 
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CPUMotherboardGraphicsRAM
AMD555BE3.2 (B55X4) Asus M4A88T-M Sapphire HD5770 4gb DDR31033 
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Seagate 250gb SATA WIN 7 64 500watt Xigmatek 
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post #6 of 8
Quote:
Originally Posted by gary_bushell View Post
i have those resources, thanks. to be clear, everything runs fine - benching, playing games for hours and never a crash.

my basic questions is, in a reworded way, this: phenom ll x2 3.2 overclocked to a x4 3.5 using the asus auto tune. this gives about 43fps ave on FC2. if i up the cpu to say 3.7 it still passes all the bench and load tests, still plays all the games etc, however the fps ave drops in the same FC2 bench test. just wondered why?

what section in this forum might be interested in a question like this, if this is the wrong one?
The flaw is merely in your methodology. While your computer may appear to be stable, just running a game benchmark doesnt indicate that its entirely stable. Without stressing your system completely, you may be overlooking instability because FC2 is not going to give you the same level of stress that Prime95, OCCT, or Linx will. Run Prime95 for 8 hours on blend with no errors, or restarts and then tell me if its stable.

One of the largest contributers to instability while overclocking is insufficient Vcore. Although your only increasing your fsb to get a clock speed of 3.7ghz, whatever your Vcore is set at, may not be enough to keep it stable. If you have your Vcore on the auto setting, it could cause massive fluctuations just so your aware of that, its best to dial in a setting.

Another contributor to instability is your ram. When you increase your FSB setting, you also increase the ram frequency. If your ram frequency is increased beyond that of its specified rated frequency, with no voltage increase, you could become unstable.

I have seen in the past where a computer will run games fine, surf and browse webpages no problem, watch movies etc. with no issues. However through benching the performance is less than expected do to instability. Once the instability was removed through adjustment, the benchmarks changed.
post #7 of 8
Thread Starter 
yeh, i dialled in the voltage, rather than use auto. what i did find is that on 2 core, as the chip was designed, it oc's to well over 4.0 with ease - using a combo of fsb and multiplier. i cannot get that speed on 4 core though - the best i got was 3.8.

i ran prime95 on 4 core at 3.5 along with the oc'ed 5770 - not for 8 hours ( i did 4) but all seems ok.

another question; what is better 4.1 on 2 core or 3.5 on 4 core? both give a similar bench tests
My System
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CPUMotherboardGraphicsRAM
AMD555BE3.2 (B55X4) Asus M4A88T-M Sapphire HD5770 4gb DDR31033 
Hard DriveOSPowerCase
Seagate 250gb SATA WIN 7 64 500watt Xigmatek 
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My System
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CPUMotherboardGraphicsRAM
AMD555BE3.2 (B55X4) Asus M4A88T-M Sapphire HD5770 4gb DDR31033 
Hard DriveOSPowerCase
Seagate 250gb SATA WIN 7 64 500watt Xigmatek 
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post #8 of 8
Quote:
Originally Posted by gary_bushell View Post
yeh, i dialled in the voltage, rather than use auto. what i did find is that on 2 core, as the chip was designed, it oc's to well over 4.0 with ease - using a combo of fsb and multiplier. i cannot get that speed on 4 core though - the best i got was 3.8.

i ran prime95 on 4 core at 3.5 along with the oc'ed 5770 - not for 8 hours ( i did 4) but all seems ok.

another question; what is better 4.1 on 2 core or 3.5 on 4 core? both give a similar bench tests
It depends on what your using it for, if your playing a game that can only utilize two cores, than the first choice would be better, if its cpu intensive.

If your utilizing something that is capable of using 4 cores, the quad will perform better even at a lower clock.
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