Milkeh

Hey guys I'm pretty new to overclocking and I'm not quite sure if this is the right section I should be posting in. If not then please feel free to move it.

First of all I am currently running:

Windows 7 x64
Intel Core 2 Quad Q9550
ASUS P5Q Motherboard
Corsair XMS2 DDR2 4GB (2x2GB)
tx-750w Corsair PSU


I am currently at my aim of about 4GHz but keep getting blue screen while running Prime95 for a couple minutes with the returned error.


My current settings are:

Multiplier: 8.5
FSB Speed: 470
vCore: 1.34v
DRAM: 2.1v
NB: 1.26v
SB: 1.1v

I'm not quite sure why but in CPU-Z it is telling me that I am still running everything at stock and vCore at 1.32v. While stressing I am only getting around 56C so I don't think that I'm overheating.

Any ideas?

crashdummy35

Did you disable all of the throttling features in the bios? Eist, Speed Step, Spread Spectrum...any throttling features that board has. You have to do that first or the cpu gets throttled down when it isn't under a load. Disable throttling first then report back if you still have trouble.

Also, please use the User CP to fill in your system specs as best as you can so people can get a handle on your entire rig at a glance. It makes it easier for someone to help you without having to search out your hardware over multiple posts. Thanks.

Milkeh

alright thanks, but also uhm I looked at CPU-Z and it has the correct clock speeds then like 2 mins later it changed back to stock?

DaClownie

Milkeh... Fill in your system specs...

From the sounds you have speed stepping enabled. What it does, is when the CPU is not under load, it turns the multiplier down (lowering the power needed, its an energy saver mode).

As CD35 said: EIST, Speed Step, or Spread Spectrum... make sure they are all disabled, and that should stop that from happening.

I know most of my overclocks go haywire because I get so anxious I jump right into the mix and start playing with FSB, Multi's, and voltages, forget to get the basics first

Hope that helps!

- Danny

crashdummy35

It's being throttled down. Just shut off all of those things: C1 Eist, Speed Step, Spread Spectrum.... I'm not very familiar with that board's bios but I'm sure you'll find them all--use the manual if you have to.

They cut down the voltages and speeds when it "feels" necessary.

Oh, I forgot to mention too! Are you keeping you RAM at or as cloce to stock as possible while you oc the cpu? Be sure and do that. Keep the RAM completely out of the equation at this point. If you have any troubles, you'll know it's the cpu or NB and won't have to troubleshoot too much at this time. After you get the cpu oc sorted you can go back in and oc the RAM.

TwoCables

Hmm. Well, I suppose this could be CPU EIST Function and C1E kicking in, but I don't think it should take longer than a few seconds for it to adjust. But make sure they are disabled. But if they are disabled, then I don't know what is causing that.

__________________

Milkeh

Alright guys, thanks for your replies. I'll take a look at it in the morning because I'm very tired right now. Just before I do go though, when you tell me not to touch the ram as of yet, what temperatures would you like me to leave at auto?

crashdummy35

Just set the RAM to stock settings. With the higher fsb you'll have to find a divider that gets you close to the stock speed of the RAM...go a bit under it if you have to (underclock it) and set the voltage and timings to the stock ones for the RAM also.

DaClownie

Voltages you mean?

We're saying... make sure your RAM speeds (your FSB x 2) does not exceed the rated speed of your ram (PC6400 = 800mhz, for example).

Milkeh

er what if I gave you an output of my cpu-z and you gave me some recommended settings to put in? Because I'm not exactly mean by the FSBx2 settings. If you mean put the FSB frequency back to stock, that would just leave me at stock speed?