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Strange behavior of my O/Ced E8500 (C2DUO)

post #1 of 9
Thread Starter 
Hey,


I'll explain the problem:

I overclocked it by raising the Multiplier to 9 (don't remember the default mutliplier but it was probably 8 or 7.5, doubt it matters tho) the problem is that it hardly ever goes that high. I check the multiplier speed using CPU-Z and as I said it hardly ever goes up to 9 and it almost always stays on 6.

The problem is that my PC sometimes gets really laggy (when I open several YouTube tabs or I play a game for example) and the multiplier stays on 6! I understand it shouldn't stay on 9 for power issues but even when my CPU is on full load and could use some more power it does NOT go to 9.

I watch it on CPU-Z sometimes and I know it CAN go to 9 and it sometimes will but not for more than some seconds.


Any help would be appreciated.
post #2 of 9
Raising the multiplier for 775 cpus doesn't constitute overclocking.

In order to overclock, you have to raise the base clock.

The reason the multiplier changes is because you have power saving options selected in the bios (such as intel speedstep)

You should most likely read more into 775 CPU overclocking before going any further. There are tons of these tutorials around the net, just google it.
 
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post #3 of 9
eyy mang, so with the 775 platform, overclocking is almost exclusively done by raising your bus speed.
the default multiplier of an e8500 is 9.5, that should be left alone in the BIOS
your multiplier will drop a couple notches to save power etc in low power times, you can turn these features off in BIOS (C1E, speedstep, etc)

you should do a quick readup on 775 overclocking, its actually quite easy smile.gif
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post #4 of 9
Thread Starter 
That's weird I read several tutorial about overclocking e8500 (it was a long time ago I couldn't find them again) and they explained to raise the multiplier. And I sometimes see the max frequency in CPU-Z raise to 3.6GHz whereas the default frequency is supposed to be 3.1GHz.

I'll read about the 775 overclocking and try to disable the power saving option.

Thanks!

Edit: Never mind, I'm completely retarded. I actually did raise the bus speed to 400 (from 333). I don't know why I thought I had overclocked it by raising the multiplier.
post #5 of 9
Thread Starter 
Okay,

I succeeded to disable the power saving option and my problem is fixed but I'd like to know: Is this really a good idea? Is my CPU gonna suffer from this or is it ok to disable it?
post #6 of 9
It's fine...

Just be sure to keep an eye on your temperatures and voltages using programs like CPU-Z and HWmonitor.

As long as the temperature stays below 70, then it's fine. Also, the voltage is good up to 1.325V on the E8500.

What are you using to keep the CPU cool? Stock heatsink?
 
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post #7 of 9
Thread Starter 
Yup everything is stock.

I watched the temperature a bit and it didn't seem to go over 70c (average 50-55).

I didn't change the voltage since I didn't have any stability issues with the stock voltage (1.120 V). Should I change it? (I don't see any reason to but I'm a noob so who knows!)
post #8 of 9
Quote:
Originally Posted by dona3000 View Post

Yup everything is stock.
I watched the temperature a bit and it didn't seem to go over 70c (average 50-55).
I didn't change the voltage since I didn't have any stability issues with the stock voltage (1.120 V). Should I change it? (I don't see any reason to but I'm a noob so who knows!)

to test stability, you should definitely use a stress testing program to ensure your CPU is actually fully stable, even under heavy load, where those extra megahertz will actually count
for your voltage, as long as its set to something, not auto, and your CPU is stable after say, 12 hours prime95 (forget what test in prime95 is best for this) you will be alright, just keep under 1.4v, or 1.365v to be extra safe.

when stress testing your computer, you need to make sure your CPU is staying cool, these stress testers are specifically to make your CPU work as hard as it possibly can to make sure things will work properly in all situations.

also, if you are into folding, SMP folding on your cpu for long periods of time is another indication of stability, you will get errors if your CPU is at all unstable, F@H sometimes will show instabilities that prime95 etc will not.

good luck mang thumb.gif
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post #9 of 9
Thread Starter 
Thanks for all the advice!
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