hi.. i dont know if this is the appropriate place to ask but,,
recently i tried overclocking my ram @ 1900hz
and when i boot in the windows it only shows 2gb available ram. and sometimes 1gb.. while in cpuz it states that i have 3gb of ram available

i have 3 ram modules which are 1gbX3 ddr3

my specs

Asus P6T
Corsair Dominator 1X3GB 1600hz XMP PROFILE
Core i7 920

Your motherboard might not be able to fully support such high clock settings. Try flash the BIOS to the latest version.

1900hz is too low.. its 1900megahz

lol... must be typo.. try flashing bios 1st..

might be bios.... if i m not mistake there i have experience this before, forgot it was fixed in latest bios or not.

hurmm, ive tried w/ different timings but still it doesnt work

This post has been edited by lightonokira: Dec 24 2009, 11:35 PM

flashed the latest bios,

still my attempt on 1900 seems to cut my 3gb ram to only 1gb

Manually set vDIMM to 1.65v +/-

done that mate

oo managed to recall my P6T, this board is indeed has ram issue when OCed. If default speed & timing confirm no prob but u hv to set everything manually.
solution: RMA it or sell off/throw it

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Added on December 25, 2009, 3:22 pmgoogle for p6t ram issue dude there's a long list

This post has been edited by owikh84: Dec 25 2009, 03:22 PM

ahahaha im one of them previously,but not to say ram issue on the p6t but more to ram issue itself and to make it worse happen to my dominator cl8 before..slight voltage adjustment equal to lost of 1 0r 2 stick ram..

well my problem solve after getting new ram cl7 dominator actually, so i guess its the ram is the culprit since it can run on its designated speed of 1600mhz cl7 or cl 8 on 1.56v(my old cl8 stick) but if bump the voltage to higher you start seeing loss of ram..
or even overclock the ram hogher then 1600 equal the same..so i guess cl8 dominator 6 gb kit was not compatible to p6t coz my cl7 dominator 6gb kit perform flawlessly on the same board..

mine is also cl81x3gb dominator when bumping the voltage or ocing on stock voltage this happens

When the loss of ram? What your setting for vDimm & vTT?

vDimm - vTT < 0.5

-pWs-

vdimm 1.66

vtt 1.28750 iirc

ram running at 2000mhz succesful boot but not yet stable..

and the available ram is only 1gb instead of 3gb

How if you increase ur vTT to around 1.3x v?

-pWs-

i tried that.. still it doesnt work..

will try it again at home..

i was wondering wether its a ram or mobo problem..


This post has been edited by lightonokira: Dec 27 2009, 08:25 PM

http://forum.corsair.com/forums/showthread.php?t=77394

http://vip.asus.com/forum/view.aspx?id=200...SLanguage=en-us

http://vip.asus.com/forum/view.aspx?id=200...SLanguage=en-us

http://vip.asus.com/forum/topic.aspx?elite...age=1&count=568

it seems alot of people are having the same problem..

what can i do now? i think its not worth it to wait 2-6 weeks for RMA

cause it might just happen again..

help me i just bought this mobo almost a month already

This post has been edited by lightonokira: Dec 27 2009, 08:26 PM

Last time I hv to set the Corsair Dom 1600C8 RAM timing to 7-8-7-20-1N then only it works. vDIMM was auto.

http://forum.lowyat.net/index.php?showtopi...post&p=25776868

so what should i do now?

should i just send them both for RMA or what?

RMA is always the last resolve.
Try the tighten RAM timing 7-8-7-20-1T
Could be P6T hate CL8?