Quote Originally Posted by clo007 View Post
OK, So I got my new UD3R, thinking my other one was screwed up. If you can remember, for some reason my motherboard will not run 2 sticks of ram no matter what size. So I bought a new mobo since newegg would not replace and gigabyte still has not sent me any kind of RMA confirmation for the mobo. Anywho, fast forward to today. I got the motherboard, rev 1.1(interesting the NB/Sb coolers are a bit different in finish and sizes then from rev 1.0) so i reinstalled with new motherboard. Well, this one won't run with 2 modules either. Also, once I installed it, it would hang as soon as my desktop came up. So i grabbed a spare HDD and installed Windows fresh. No more hang but I still can only run one module. If I put 2 modules in it won't even get to bios.
Does anyone have any clue what this may be from? I am thinking maybe a PSu issue, as my HX520 is almost 2 yrs old now, but for the past 3 weeks, I have been running at 471x8.5 with no issues, except the ram issue. I am so puzzled right now. I have 5 different sets of ram that I have tested with all the same effect...1 stick=mobo runs, 2 sticks= mobo won't post even to bios.
Quote Originally Posted by Max25 View Post
First: Sorry for my bad English.

I have the same Problem like Jor3lBR with 2x2048MB RAM, DDR1066 and MCH-Voltage, he discibes on Page 58/59.

but it is more bad, my "Stuck" MCH -Core is 1,2V!!

Corsair Dominator 2x2048MB DDR 1066 5/5/5/15, the CPU is a Q9550 E0.

When i set everything to DEFAULT (FSB333x8,5, DDR1066) i can boot and everything is fine. Even DDR 1080 is no Problem.

But when i raise the MCH-Core Voltage over 1,2V the Board loop in Reboots. I must turn down FSB to 325 (DDR 1040), then i can boot.

I need higher MCH-Core Voltage then 1,2V for my Quad at higher FSB, but then i cant run DDR 1066or higher!
(For Example FSB 445 and 2.4B=1066 -> not possible over 1,2V MCH
FSB 433 and 2.4B=1040 -> possible with 1,2-1,4V)


What is the Problem, is the Board damaged or the RAM incompatible?

Any solution?

I have similary problem, at first I had some problem to get my E8400 and 2x1 Kingston HyperX PC9600 to boot at FSB 450 ram 1200 555 15 tRD7 (Strap 200, Multi 2,66C) and FSB 500 ram 1200 555 15 tRD8 (Strap 333, Multi 2,40B) but with a lot of tweaking and help from people in this thrread I made it but about 2 weeks later it just refuse to boot at those setups, no matter what I did.

Then I tried to run my 2x2 Corsair Dominator PC8500 ( they are on the compatible list) with FSB 333, 400, 450 and ram 1066 and 1080 but it refuse to boot with it, I tried the same with one stick it was okey but not with two.

I can run 433 1042 but with 434 1044 there´s no boot.

If I run 1:1 there is no problem at all, I can reach all the way up to FSB 575 ram 1150 555 15 tRD9 stable without any problem.

There seems to be something strange going on with some of the straps and multi on this board, I also want know what´s going on, I hope somebody can help.