FAO: 8 Pack - Asus Z9PE-W8 & 2133Mhz memory issues

[coolamasta]

Hi bud,

Andy Moore said to give you a shout as I'm having a few woes with trying to get my Asus Z9PE-W8 board with a pair of EP-2670's working at 2133mhz RAM.

I bought 2 of these quad channel kits - http://www.overclockers.co.uk/showproduct.php?prodid=MY-117-KS&groupid=701&catid=8&subcat=817

They are rated for:

- XMP Profile #1: D3-2400 CL11-13-11 @1.65V
- XMP Profile #2: D3-2133 CL11-12-11 @1.65V

I am trying to run them at 2133mhz, I built the rig up, it powered up straight up will all 8 RAM sticks in, went into BIOS and set everything up, to begin with I set RAM to 1600mhz, booted into Windows and ran IBT for an hour, all seemed nice and stable with low core temps, BCLK is at 101mhz by the way

I decided as the BIOS was only 1 revision behind I wouldn't bother updating it so went back into the BIOS and cranked RAM up to 2133mhz with 11-12-11-30 timings and then upped voltages to 1.65v on all 4 channels, also added a bit on both CPU VSA voltage's to 0.99v for good measure, it booted into windows fine, I ran IBT quickly for 15 mins all seemed fine so shut down, plugged in a new HDD and went to install Ubuntu 12.04 x64 and it kept resetting itself 80% of the way through the install every time

Had a play with C-states and other BIOS settings but didn't seem to make much difference, I then plugged back in the other HDD and went back into windows and weirdly even though I could run an IBT or Prime95 stress OK, it would randomly crash when opening IE or CPU-Z or something, I then dropped mem speed down to 1866mhz with 10-10-10-28 timings and it seemed fine and stable in windows again, couldn't get it to crash but had to leave it there last night as it was nearly 1am.

Do you think I have any chance of getting this kit running with 2133mhz RAM or should I just accept I will have to live with 1866mhz assuming its now stable and im able to get Ubuntu installed tonight?

Any help much appreciated.

Cheers

 

[coolamasta]

Cheers mate, that's interesting with the VSA voltage as it was running 0.82v stock voltage and I thought by bumping it to pretty much 1.00v it would be sufficient but then I always like to play safe with voltages haha. If stock is 1.05v then I will go for 1.1v middle ground when I test next and see how I go.

Will get all the ram subtimings tonight and paste them up for you.

I got Ubuntu 10.04 installed fine last night and its been sat folding for about 14 hours now with ram at 1866mhz so hopefully its just fine tweaking needed to get it stable at 2133mhz

Thanks bud, appreciate the help!

 

[coolamasta]

Hi bud, heres some screen shots of BIOS running at the current stable 1866mhz settings:

 

[coolamasta]

Cheers bud, will give that a go later on

 

[coolamasta]

Have done what you suggested mate and it seems to be happily running the memory at 2133mhz now after much testing and stressing so thanks very much for that

Only thing is its now pulling nearly 70w more from the wall and the CPU's are running a fair bit warmer, I assume due to the 1.2v on the cores. I did drop the CPU voltage down to 1.15v but after a bit of stress testing it did eventually lock up again.

Seems strange that the CPU's need the extra core voltage to be stable rather than just the memory controllers and memory itself even though the CPU's themselves are not overclocked but I guess its to do with the art of overclocking

Need to decide whether to run the higher voltage and temps to keep the memory at 2133 or drop it back to 1866, hmmm....

Either way thanks very much for your help at least I know its possible now