GA-P55-UD3 - Windows 7 Ult 64 Crashing after fresh install

[Dark Mantis]

OK Mark but it is getting a bit late now as I have been on here since 0700 hours this morning and it takes it's toll
Maybe we will have to finish up tomorrow as it could take a while.

Generally what you need to do is put the memory settings into manual mode and increase the voltage a touch to compensate for the extra loading on the memory controller because of the full slots.

You will need to put up the voltage from 1.5 to 1.55 or if it defaults to 1.65v increase it to 1.7v
The QPI/Vtt voltage must be kept within 0.5v of the memory voltage. It can be closer that isn't a problem. you will probably need to set it to between 1.2 to 1.45v. Something to play around with until you get stability.

Set the timings to whatever the memory is rated at ie 8-8-8-24.

You next have to change your Uncore to twice your memory multiplier or twice plus two. ie if your memory multiplier is 10 then your Uncore must be between 20 and 22.

Well that's the basics and will give you something to play around with for now. Don't forget it is violtage and heat that are your worst enemies.

[MMiller]

Making progress, with changes to the voltage and QPI/Vtt, the Win7 x64 install actually finished.  Your help is much appreciated!

At the moment, I can't find where to change the uncore value.  It looks like it should be between 20-22 and it is currently set at 16.

Thank you!

[Dark Mantis]

You should be able to access it under Advanced Frequency Settings in the BIOS menu. You may have to turn of Auto  on another feature to gain access.

[MMiller]

Might be a silly question but ... my final setting are 1.60 for dram voltage and 1.25 for the QPI/Vtt. If the ram is labeled at 1.5 and I am running it at 1.6 am I going to damage it or limit its useful life?

 I am still looking for the uncore setting.  The bios version of the board is F11.  It appears that is controlled by BLCK Frequency(Mhz) value once the "Base Clock(BCLK) Control" is enabled.  Currently, the BLC Frequency(Mhz) is sett to 133.  My cpu is an i5-760 (LGA1156).  Any ideas on what this value would be safe at? 

I can't tell you how much I appreciate your guidance.  I would have never messed with these settings because I was always under the assumption that these were strictly for overclocking.  I am still generally confused as to why these aren't managed by the 'auto' setting or perhaps at a bare minimum mentioned in the manual as potentiality necessary when utilizing denser ram modules.

Cheer,

Mark.

[Dark Mantis]

Yes I would have to agree Mark that the manuals could be better and never seem to cover all the small but important points. I mean I look at some things and think "what the hell is that" and have to start looking it up elsewhere. I guess we never stop learning!

The trouble is with these different BIOS versions they always seem to mess around with things and you find that what was available on one version has disappeared on the next.

I would leave the BCLK frequency as it is.

Don't worry about the memory voltage being a bit higher than recommended as they will all take a bit extra. Unless you overclock things to extreme the life expectancy of the device isn't really the limiting factor it goes out of date usually before  dying.