2nd attempt to overclocking

[alphawolf010]

Alright, givin this a second go around. Last night when I tried I ended up having to reflash the cmos to save the board. I do have a few questions though:

With this board I havent seen a way to change the memory to SPD, and I havent seen any htt multiplier, only the CPU multiplier. If anyone has experience with this could you please help me clarify my issues?

Thank you in advance

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

Found this set of screenshots of the bios if it helps at all.

edit2: closing this to let the original take precidence

 

[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

Ram is most likely what borked your CMOS. To maximize your overclock you need to run a ram divider with is on the 5th screenie "Dram frequency at next boot", you should change this from auto to 166 for CPU frequency from 200-240, if you go above 240 change it to 133

 

[SimMike2]

I know when I overclock my opty 165, I do so by setting the ram bus speed slower than the CPU bus speed. For instance, if I set the CPU bus speed to 250, I end up setting the dram speed (divider) to 166 or 133. Since the CPU bus speed is overclocked, the memory speed also goes faster than 166 or 133. However, with my system there is one glitch. Even though my memory is effectively running at 200 (or 166), the SPD reads the divider number and sets the memory settings as if they were running slower. So even though the memory is running at 200, the computer BIOS thinks it is running at 166 and sets the CAS and everything else more agressively. Depending on your memory, sometimes this works, but just as often, the memory is running out of spec, IE, too fast. So you have to manually change the memory settings to what they should be. This might be just my setup.

BTW, setting your memory DRAM to "auto" is using the SPD to make the settings. Using manual allows you to change the settings.