upgrade from 4gb to 8 and now won't O'C

Toggle sidebar Toggle sidebar
W

Wm Mc Arthur

Honorable
Jun 11, 2013
5
0
10,510
Asus P5Ne-SLI mobo with Q9550 was running 4gb Corsair xms2 pc6400 version 6.1 o'c from 2.83 to 3.72 ghz stable as a rock. Went to add 4gb more and searched out exact Corsair xms2 only this was ver 6.6. Mobo refused to run at more than stock 2.83 - pull out the new ram - runs fine at 3.72. To make this even odder had some old OCZ pc5300 which I added to make 8 gb total and mobo would now run O'C at 3.4 ghz with PC5300 and pc6400! So what's up with exact same memory addon and no OC and completely unrelated OZC 5300 and it will O'C ???
What if I upgrade the second batch of 4 gb to pc8500 ? All mem was run at 5-5-5-15 with 2 cmd cycles. Upped mem voltage to 2.1 - no effect.
At my wits end here - HELP PLEASE!!
 
Sort by date Sort by votes
W

Wm Mc Arthur

Honorable
Jun 11, 2013
5
0
10,510


Hey there Tradesman - thanks for such a quick response !

I had thought about playing with vcore and nb voltages but getting a little out of my pay grade here as to what to set those voltages to and didn't want to inadvertently cause yet another problem.

Anyway thanks for the effort here.

 
Upvote 0 Downvote
W

Wm Mc Arthur

Honorable
Jun 11, 2013
5
0
10,510


Hey there Tradesman - thanks for such a quick response !

I had thought about playing with vcore and nb voltages but getting a little out of my pay grade here as to what to set those voltages to and didn't want to inadvertently cause yet another problem.

Anyway thanks for the effort here.

 
Upvote 0 Downvote
W

Wm Mc Arthur

Honorable
Jun 11, 2013
5
0
10,510


Interesting question considering I don't even know what a "divider" and where to reset it? I'm pretty intimate with all the bios settings on this board and that doesn't ring any bells - Is that a mechanical setting on the mobo itself ? Also if it was set to prevent RAM OC then why am I able to see and change all the memory settings in the bios ?

Thanks for the input
 
Upvote 0 Downvote
W

Wm Mc Arthur

Honorable
Jun 11, 2013
5
0
10,510


OK, thanks much for the feed back here - I'll try your suggestions and see what happens.
 
Upvote 0 Downvote
S

smeezekitty

Distinguished
Sep 11, 2012
6,960
0
18,460
Sometimes its a jumper and sometimes its a BIOS setting.

It divides the FSB so the RAM doesn't get OC along with the CPU.
RAM goes unstable very easily when OC.


Sometimes it is marked DRAM freq.
So if you have 800MHz RAM, try setting this to 667.
 
Upvote 0 Downvote
You must log in or register to reply here.

TRENDING THREADS

Latest posts

Moderators online

Share this page

COMPANY
RESOURCES
FOLLOW
Top Bottom