Can only boot with one stick of RAM at certain FSB

mks2005 · 15 Sep 2008 at 18:46

Hi guys,

Been OCing my E8500 on IP35-E and I've reached a stable OC on CPU with at 4.2Ghz (9.5 x 442 FSB). I've bumped the NB and SB up one notch each.

Issue is that at this FSB I can't boot with both sticks of my OCZ Reaper, even if I run the RAM underclocked and at loose timings - just the the one.

I tried upping the NB volts a little more but no luck.

Can anyone advise where I should go from here?

Cob · 15 Sep 2008 at 18:52

Have you tried both sticks on their own?

mks2005 · 15 Sep 2008 at 19:04

Yup, same happens.

Cob · 15 Sep 2008 at 19:20

Drop the multi to 6 x 442 and see if it'll work with both sticks.

mks2005 · 15 Sep 2008 at 19:38

Tried dropping it, same problem occurs. Same if I try running non dual channel too.

:/

Cob · 15 Sep 2008 at 19:40

Hmmm. Does the board have a DDR2 Ref Voltage option? Can't rem if the -E has it.

mks2005 · 15 Sep 2008 at 19:48

Tried +0.1V and +0.2V but makes no difference.

Just tried booting with the ram in 1:1 (884mhz) and its fine. Interesting...

I know both sticks on there own are good for 1150mhz... but just not together....hmm

Cob · 15 Sep 2008 at 20:04

You really should have mentioned that you were trying to run the memory way over spec.

mks2005 · 15 Sep 2008 at 20:19

Cob said:
You really should have mentioned that you were trying to run the memory way over spec.

I'm running PC2 9200

http://www.ocztechnology.com/products/memory/ocz_ddr2_pc2_9200_reaper_hpc_edition

It's good for 1150Mhz?

Cob · 15 Sep 2008 at 20:27

Nice memory :cool:

What voltage are you running the memory at?