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Opty 165 question..

psykix

psykix

psykix

Associate
Joined
17 Jan 2007
Posts
576
Opty 165 on A8N32 Deluxe - dunno what RAM, all I know is it's PC3200 DDR400 CAS3.

Question is - all I changed was the FSB to 300, multi is 9x, and set the RAM to 166. Is this correct? CPU voltage is 1.45v - I didn't change this, so M/B must have or that's standard..

Temps seem a bit high under load - 59/60C and I'm using an Arctic Cooling Pro 64.

Is this all correct do you think?
 
Hi.

Use the search function, there are lots of threads in here covering 165 Opteron overclocking with A8N Series boards.

Read up on those as they will give you plenty of hints and information. If you are still stuck, post back with more info, perhaps some CPUz screens of your current clocks and I am sure we will be able to get that chip going.

You did not even post what speed you are at currently btw. But reading from your post it seems you are running 300x9 which equals 2700. That is not a bad clock at all.
 
300*9 gives 2.7 which should be fine at that voltage.
Use a 133 divider to give 193 MHz on the memory, 166 gives 245 MHz which is far too high.

Might want to turn it down a bit though. Under 55 load ideally.
 
Thanks for the reply - yes I'm running 2700Mhz. I just went straight to that speed, haven't tried any higher - I have read umpteen posts on here - I always lurk before posting, but the more I read, the more confused I get!

I wasn't sure if the ram was set to the correct speed or not - on POST it says 333Mhz..
 
Perfect, thanks for that prog!

Should I drop my cpu voltage down to 1.35v? That's stock voltage for Opty isn't it?

Just want to figure how to get my temps down a bit now!
 
Ok, I'm confused!

If I drop my ram to 133Mhz, then on POST it reports DRAM Clocking = 266Mhz, but then just goes into standby. If I set it to 166Mhz, then POST reports DRAM Clocking = 333Mhz, and all is fine??? This is with 300*9 btw.

Surely it should be closer to 290Mhz * 2 = 380Mhz?

With everything as standard, POST reports DRAM Clocking = 400Mhz i.e. DDR400.

I'm baffled!!
 
That's not the ram speed, it's the divider. 400 means it's at 1:1, 333 means the ram is running at less than the htt etc.

Check the actual speed using cpu-z in windows.

133 divider is what you want. It will say 266 at post (to indicate it's on a divider). Should be about 190 actual speed in cpu-z.
 
Ok, I set the memory to Auto in the BIOS, and CPU-Z now reports 290Mhz.

So, I'm running 2.7Ghz on 1.35v, and all seems fine.

Cheers!
 
I had to peg it back to 300*9 at 1.4v - was too unstable at 311*9.

CPU-Z reports mem speed as 192.90Mhz, FSB:DRAM CPU/14

That seems correct, as A64 MemFreq gives a 192.857143Mhz mem freq with those settings. Don't suppose there's any way to eek the extra 8Mhz out of the RAM?
 
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