General Computer Issues

marc69

marc69

marc69

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Hey Guys,

So i decided to OC my q6600 to 3ghz and it ran Prime95 (Small FFTs) for 5 hours giving no problems so i though "great". I then ran 3Dmark06 and on the last test it froze giving me a black screen (Restart Required).

So i restart the computer and give it another shot, this time it decides to show me an error on the CPU test (First one). The error was "Display Changed".

No idea whats going on, surely prime95 for 5 hours put more stress on it than 3dmark06?

Temps were all fine (Graphics Card and CPU) Cpu = 48/48 /40 / 40 i think.

*EDIT* Just reset the cpu to stock and now i get the "Display Changed" error again (Second Test me thinks)

Cheers
 
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Different kind of stress,

May need a touch more voltage on the CPU

The 3dmark errors are more likely due to another application grabbing screen focus or you touching a button, the mouse. What else have you running ?

AD
 
Cheers for the reply.

I did try running the CPU at 1.35v which im told should be plenty.

I tried using a program called OOCT which stresses the cpu, this crashed black screen and forced me to restart the computer (@ Stock Speeds)

Programs running are Steam / AVG / Firewall / Ipodservices.

Thats about it besides windows required processes

Cheers
 
if you can run small FFTs for 5 hours then CPU voltage is fine.. sounds more like a memory issue to me.. OCCT defaults i believe to a blend type test and if that fails straight off along with 3dmark suggests memory issues..

For 3ghz I am assumming you are running @ 333(4) *9 ?
Firstly if you are on an Asus board (i believe you are?) change your FSB to Northbridge strap to 333mhz
Secondly make sure you RAM voltage is running at what the manufacture recommends (i.e if the RAM is rated at 1.8-2.0v run it at 2.0v)
Thirdly if you are running 4 sticks of RAM up your NB voltage to 1.4v (believe that board has this setting if not 1.45v will not hurt)..

If that fails set your RAM timmings to 5-5-5-18 (if you are running that GeIL RAM in your sig)
 
Pneumonic said:
if you can run small FFTs for 5 hours then CPU voltage is fine.. sounds more like a memory issue to me.. OCCT defaults i believe to a blend type test and if that fails straight off along with 3dmark suggests memory issues..

For 3ghz I am assumming you are running @ 333(4) *9 ?
Firstly if you are on an Asus board (i believe you are?) change your FSB to Northbridge strap to 333mhz
Secondly make sure you RAM voltage is running at what the manufacture recommends (i.e if the RAM is rated at 1.8-2.0v run it at 2.0v)
Thirdly if you are running 4 sticks of RAM up your NB voltage to 1.4v (believe that board has this setting if not 1.45v will not hurt)..

If that fails set your RAM timmings to 5-5-5-18 (if you are running that GeIL RAM in your sig)
Click to expand...


Thanks for the reply.

For 3ghz i was running 333 * 9
Yup the board is an Asus p5kc combo
I have the ram set in the bios to 2.0v but CPU-z records it at 1.8 (Only running 2gb)

Ill try lowering the memory latencys back to 5-5-5-18 but shouldnt the ram run at 4,4,4,12?

Bit confused on what you said here "change your FSB to Northbridge strap to 333mhz"

Could you please explain a little please.

Oh and i set OOCT to just test the CPU not the Ram :)

Thanks again
 
yes the RAM should but we are trying to determine the cause of the instability..

The RAM at those timmings should run without issue, I would up the RAM volts to 2.1 that is it max rating (althought GeIL website recons it can do 2.3, but I would go with the sticker on the RAM!)

Am not sure if that board has a FSB to Northbridge strap you might need a BIOS update but pretty certain last time I played with one it did! The Asus boards are known for being unstable at anything but the 333mhz strap..

If none of the above works, set your FSB to 400mhz run the RAM @ 1:1 Ratio i.e. 800mhz and give the CPU 1.35 vcore and NB 1.4v that should work, if it doesnt up the vcore all the way to 1.4v

If that has issues then you are going to need to run through the FSB seeing where you are and arent stable i.e. looking for FSB holes... Set the multiplier on the CPU to 6 and then from 300mhz run up in 10mhz intervals to around 450 FSB..

Quick Edit: You have the RAM in the correct slots on the MB? i.e. in slots of the same colour?
 
Pneumonic said:
yes the RAM should but we are trying to determine the cause of the instability..

The RAM at those timmings should run without issue, I would up the RAM volts to 2.1 that is it max rating (althought GeIL website recons it can do 2.3, but I would go with the sticker on the RAM!)

Am not sure if that board has a FSB to Northbridge strap you might need a BIOS update but pretty certain last time I played with one it did! The Asus boards are known for being unstable at anything but the 333mhz strap..

If none of the above works, set your FSB to 400mhz run the RAM @ 1:1 Ratio i.e. 800mhz and give the CPU 1.35 vcore and NB 1.4v that should work, if it doesnt up the vcore all the way to 1.4v

If that has issues then you are going to need to run through the FSB seeing where you are and arent stable i.e. looking for FSB holes... Set the multiplier on the CPU to 6 and then from 300mhz run up in 10mhz intervals to around 450 FSB..

Quick Edit: You have the RAM in the correct slots on the MB? i.e. in slots of the same colour?
Click to expand...

Cheers for the response once again.

I will try to up the volts on the RAM to 2.1, i will also lowering the latency to see if that does improve stability.

I do have a fairly recent BIOS update but a new one was released like a few days ago so ill bang that on and see what happens.

I will try playing about with the other volts and FSB speeds.

Oh, the memory is in the correct slots running in dual channel. I also ran Memtest a few days ago and no errors were found.

Should this all be necessary for stock speeds?

Also what effect on performance does running the RAM with a 1:1 Ratio have (If any?).



Cheers :)
 
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Thanks for the link ive had a peak through it.

Ive upped the DRAM Voltage to 2.1 and lowered the latency of the ram 5,5,5,15 and 3dmark06 runs fine so does OOCT.

So now i guess i tighten the latency using the new volts (2.1v) and see how it goes?

12k in 3dmark 06, not to bad :)
 
lo again,

So i tightened the timings up 4,4,4,12 and got back into windows then ran OCCT and kaboom "Black Screen" which is the issue i was having before.

I couldnt find anywhere in the BIOS to change the ratio to 1:1.

What should i bumped the NB voltage upto?

Thanks :)
 
*Update*

Ive just upped the NB voltage to 1.4 and the CPU Voltage to 1.35 and it crashes out (OOCT). Black screen again \o/

Any plans?

Cheers
 
what speed is your RAM running at? DRAM Frequency I believe they call it..

Am off home now.. so quick edit! This needs to be kept below 800mhz.. check that it is..

very odd that it wont run @ 4-4-4-12, make sure that you have the command rate set to 2T (might show as 2N).. if that doesnt work check you dont have the Transaction Booster set to higher than 0 (not sure if this board has this option but this will cause memory instability)
 
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Appreciate all this information your giving me mate, this issue is a very confusing one.

Ive just reset everything back to stock in the bios / Load Setup Defaults

It now runs OOCT perfectly and 3dmark06 fine as well.

The memory at the moment in CPU-Z is showing as 400mhz but im told as its DDR2 this means its effectively running at 800mhz.

As for as the command rate, it is running at 2T.

Ill go check the bios now for "Transaction Booster" *EDIT: It does have this option currently set to "Auto" i changed it to enabled and its set to "0". I saved the settings the exited the bios and the computer failed to boot, asus safe overclocking thingy allowed me to restore it back to auto. (Not sure if this means anything to you, this really isnt my area *Confused a little*.

So to get this computer stable i have to run 5,5,5,18.

FSB:DRAM ratio according to CPU-Z is 2:3 (To be completely honest im still unsure about these ratios as i cant see any options about it in the bios)

Thanks again mate :)
 
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