Overclocking an opteron 165

[alphawolf010]

Following the s939 quick and dirty guide, I'm isolating the boards max htt/fsb on a jetway 939-gt4-sli, and when I restart/edit the bios, it wont reboot, but shutting it off and turning it back on it runs just fine. Is this normal or should I tune it down?

 

[n7]

Well, i've not followed s939 for a while, but i can tell you that my A8N32-SLI in my secondary system does the same thing once i reach a higher HTT too.

I think it happens infrequently on some s939 mobos; i forget the reasoning exactly why...

 

[alphawolf010]

well, after having to reset my cmos (had green and red text appear in random places) I'm gonna have to check out another guide on how to do it (unless someone would be willin to get on AIM/MSN and walk me thru it)

 

[HomeyFoos]

change the ldt multi to 3 from 4. It sound like your HTT speed is too high to properly communicate with the memory controller on the chip.

But I only know this from reading the DFI Overclocking Guide.

 

[alphawolf010]

http://www.ocworkbench.com/2005/jetway/939GT4-STD-G/g4.htm

Here is a pic of my bios. Right now I'm having problems finding my HT multiplier and the option to set ram to SPD. Where should I look for these in this bios

 

[GuitarDaddy]

SPD is just the manufacturers rated timings, the board should automatically set them. If not just set them manually as shown in the fourth screenie.

The HTT multi is "Hypertransport frequency" in the second screenie. 1000=5x 800=4x 600=3x 400=2x 200=1x

 

[alphawolf010]

AH! ok, I'll work on it in a bit

board can handle the ht x5, so next work on the clock

 

[GuitarDaddy]

I don't think you understand, testing max htt/fsb doesn't mean testing the 5x multi.
It means testing for the highest CPU frequency with all other variable set low.

To isolate and test the max htt/fsb, drop the htt multi to 600/3x, drop the CPU multi to 6x, drop the dram frequency to 100. Then increase the CPU frequency as high as it will go, you may have to increase the NB voltage and/or the LDT voltage once you get near or past 300.

Then to test for max clock, keep all the settings as above except raise the CPU multi to max which I believe is 9x for your CPU, and increase CPU frequency as high as you can go. And increase the vcore as you go up

 

[alphawolf010]

thank you so much, I feel really dumb doin this, but I greatly appreciate the help (cant really afford to get a new rig at the moment)

edit 1: whats a safe NB/LDT voltage?

edit 2: when will I know to up which voltage? The NB only has 1.5/1.6/1.7 and LDT is 1.25/1.35? Are the maxes of these safe?

edit 3: reached 315 and couldnt make it any further

edit 4: doing the max cpu speed, up to 2.205ghz and havent had orthos say anything about an error, is this normal?

edit 5: up to 2347mhz and still no errors or + voltage

edit 6: up to 2615mhz (290x9) with absolutely no issues, still at 1.36volts. I wish I could get my mb to be stable past 300 (the safe max htt) :'(

 

[alphawolf010]

Should be my last post on this. I reached 300x9 with no problems. I would push to 310, but the guide said to stop at 95% so thats exactly what I'm gonna do, now to set the multiplier to get my ram running at stock for now, and all will be good.

 

[GuitarDaddy]

Nice overclock! Those 165's are pretty sweet, I think 2.7ghz is pretty common for them.
You could probably go higher but it would take upping all the volts, and you are wise to stick there at 2.7, a 900mhz overclock is nothing to sneeze at

 

[alphawolf010]

I would, but I upped the volts on the NB and LDT to max and the board wouldnt boot at 315 . Still.....50% increase upped it enough to save me a massive upgrade for now.

Right now its been running OP2004 for 5 hours with no problems. Its at 2.7ghz @1.36v. When I get home, if its still stable I'll call it done. I also noticed that while my bios said my ram is running @ 150, it posts @ 200, and when I iupped it to 200 in bios, it posted 266 (and subsequently crashed). Is this a common occurance? I'm fine with the ram at stock speeds, since I really cant go any higher on the processor

 

[myocardia]

Originally posted by: alphawolf010
Right now its been running OP2004 for 5 hours with no problems. Its at 2.7ghz @1.36v. When I get home, if its still stable I'll call it done. I also noticed that while my bios said my ram is running @ 150, it posts @ 200, and when I iupped it to 200 in bios, it posted 266 (and subsequently crashed). Is this a common occurance? I'm fine with the ram at stock speeds, since I really cant go any higher on the processor

Are you running Orthos? If not, you need to. You can't just test one core, especially core #0, because core #1 (the secondary core) is nearly always the core that fails first.

 

[alphawolf010]

Sorry to drag this from the bottom, I was running orthos, stayed stable for 12 hours no errors. I think when I did a temp check it was at 45*C

 

[smokeyjoe]

Grats on the overclock.. I'm curious if you were able to factor your RAM into the equation yet? What RAM are you using?

I can reach the same clock speeds on CPU (300*9), but can't get my RAM to run on the "266" divider on my ASUS Premium. I've tried just about everything.. even with myocardia's help.. to no avail. Using 2gb Corsair XMS myself.

 

[hydroponik]

If your fsb/htt is at 300mhz, then make sure your HT Freq is set at 3x (which I would assume would be 600 on your screen). You want to aim between 800-1000 (300*3=900)

 

[ShadowdogKGB]

The HTT doesn't do anything for performance anyways. 3x or 4x on the multi is all you'll need.