LinkBack URL
About LinkBacksOkay so, on my continuing Opteron overclock journey, I've come across the following oddity:
300MHz x 9 = 2.7GHz
RAM at 193MHz due to divider
Windows loads, everything is cool...
But as soon as I try 305MHz x 9 , it won't even boot.
Okay so, on my continuing Opteron overclock journey, I've come across the following oddity:
300MHz x 9 = 2.7GHz
RAM at 193MHz due to divider
Windows loads, everything is cool...
But as soon as I try 305MHz x 9 , it won't even boot.
Whats the VCore?
Was 1.375v but I tried it up to 1.45v and it did the same.
EDIT: Just tried it with a lower RAM divider and it boots fine at 305 x 9 at 1.375v... this isn't making any sense.
Its the ram being a pain then, what voltage are you running on that?
At 2.75v I know it can go up to 220MHz as that's what it's sat at now using the DDR333 divider.
It's just as soon as I touch 'DDR266' it craps out on me, I really don't get it.
(Thanks for the quick replies btw.)
heh, no worries
When you reduce the speed its runnng at, it craps out? That doesn't make much sense
Have you tried lowering the voltage when you run the lower divider?
I'll try it now, just gotta find the stock voltage out.
EDIT: Found it, according to Corsair they were tested at 2.75v anyway.
Kinda makes sense really as I can get 305 x 9 working fine by just using the lowest divider.
Last edited by NightshadowUK; 15-10-2006 at 02:40 PM.
Summary post:
- I know my memory can run at 220MHz.
- Yet it won't run above 192MHz on the DDR266 divider.
- It isn't voltage as at 2.75v I can run the DDR200 divider which knocks it down to 150MHz just fine.
Have you got the latest bios for your motherboard? It may just be a quirk of the bios that happens?
I have indeed, d'you think it may be worth dropping back a version?Originally Posted by dave87
Could be, have you used any previous bios' that have been as stable as the current one? Might be worth giving that a try
I used BIOS ID:17 to overclock my 3700+ as it's what came with the board (although I never touched anything other than the DDR333 divider due to the 11x multi... but then I flashed to ID:20 when I got the Opteron.
I'll give it a go and post back, cheers man.
Are your DRAM timings set to 'Auto'? Sometimes the board will use tighter timings on a lower memory strap.
Tried every BIOS version back to ID:17 and I get the same problem.
To charleski: The main timings are manually set while the others (the ones I don't understand) are Auto.
*Bump*
Help me... please?
perhaps it's not the RAM but you need a slight voltage boost to the chipset at that external clock?
There are currently 1 users browsing this thread. (0 members and 1 guests)
Posting Permissions
Reply With Quote
