Quote Originally Posted by -n7- View Post
Can 8 GB even be stably run in this board?

I'm pulling my hair out trying to achieve some form of stability with 8 GB in this mobo.

I got this mobo about a month ago to replace my aging P5B Deluxe.
Why?
Because i wasn't happy with how 8 GB clocked on that board.
Oh, the irony, since it was a piece of cake on that mobo...not so on this DFI.

A couple thing to get outta the way:
The RAM i own has been thoroughly tested individually & also in 2x2 GB combinations.
Of all four dimms, the worst one does ~DDR2-1080 5-5-5-15 @ less than default vdimm
There is nothing wrong with the RAM; it's not failing or having issues.
How do i test?
I use Memtest86+ 2.01, & HCI Memtest (four instances to stress all 8 GB).
Prime95 does NOT determine RAM stability well at all with 4+ GB, neither does OCCT, SuperPi, or basically much else.
So yes, i except the RAM to perform under a beating.

I can run 2x2 GB easily @ DDR2-1050+ with either kit.
But as soon as i put all four dimms in, it becomes impossible to maintain stability @ basically any speed.

The issue is this motherboard, i already know that's what's causing my troubles, not the CPU or RAM or other components.

The reason i'm asking for help is because i've basically tried everything i can think of...nothing is working.

I have tried cranking up NB voltage.
I have tried loosening every single subtiming to retardedly loose levels
Yes, every single one.
(Particularly tRD & TRFC since i know they affect stability a lot.)
I've set everything under Clock Setting Fine Delay to More Relaxed

The worst thing is that the results are incredibly inconsistent though.
I cannot seem to pin down why it won't run all four dimms stably.
It does seem to do a bit better with 3 dimms, but not by much.

Thanx very much in advance to anyone who can offer ideas.


tRFC man, set 52 or 54 or 60( good for 1100+)