Windows 7 - windows 7 bsod with 4gb memory

ok another update from jetway.this is more confusing. my poor brain cells are working overtime. if anyone can make sense of this email!
Dear sir :

We have two type 2G RAM module in hand ,
one for SAMSUNG 2G 2RX8 PC26400S component 2G RAM module .
this type RAM module 2GX2 total 4G can work fine in NC81 mainboard .

we have another ELPIDA E1108ACBG component 2G RAM module
(transecond brand) , this type RAM module 2GX2 total 4G can't work fine in this mainboard .

We doubt it is CPU issue , we still not good solution for this issue .
we already report this issue to AMD now .
If you custermer have this problem ,
we recommed change DDR2 RAM module timming to DDR2 667 from BIOS setup .
The total 4G memory can work fine in DDR2 667 timming .

Best regards
From JETWAY FAE support team

It looks like they are trying to tell you to underclock your ram or run the ram at a lower speed then what it can do.

That is a fairly typical solution when installing more memory. Even a desktop board needs to have the memory voltage bumped up or the timings lowered or the memory speed adjusted to use a different divider in order to run stable with 8Gb memory.

Ok i did not explain myself properly.I understand that about memory underclocking , I tried that with my old memory modules before i got rid. What I dont is what jetway said
"We have two type 2G RAM module in hand ,
one for SAMSUNG 2G 2RX8 PC26400S component 2G RAM module .
this type RAM module 2GX2 total 4G can work fine in NC81 mainboard "

.As jetway claim they work in 4gb configeration I would like to get them .
I cannot find a 2 gb SAMSUNG 2G 2RX8 PC26400S component 2G RAM module in the UK. is the "2RX8" important?
i have found samsung memory but not with 2G 2RX8 , I belive it has that printed on the actual chip.
As you can imagine I am getting a collection of memory modules & due to postal strike in uk, I have 4gb module stuck in transit along with xfi elite .not a happy bunny.
is the 2RX8 important?
as in the past i had a intel gme 945 mini itx mobbo that was very selective on memory.
If any one can educate me on 2G 2RX8 memory & where to find them i would be greatful

Just an update. got some 4gb (2x 2gb)samsung memory & now it is all good.the 120w picopsu is powerful enough even powering a soundblaster x-fi elite pro( op amp modded) with external box as shown in picture.. just have to wait for kustompcs.uk to stock up on Matrix orbital gx typhoon which will be mounted underneath blu ray drive,then project will be complete.the rig runs like a dream on windows 7 unltimate x64
thanks to everyone who helped on this forum me with the memory issue on this project.
I am off to play some music & enjoy

I have to admit that is a very nice looking box with the setup around it, mixes in very well.

thanks. a very big thank you to DarkXeno(yourself) ,Ken 9122 & the great DocBrown for your input .it has been a very stressful project but baring the matrix orbital typhoon vfd it is now complete. very nice sound quality .just been listening to Lunik preparing to leave .wow








if music is the fruit of Love, then I am a raving nymphomaniac