Asus A8V Deluxe & Athlon64 3700 (San Diego) overclocking help ;|

[imported_Robbeh]

I recently bought an Asus A8V Deluxe, 3700 San Diego & RAM and seem to be having a few problems getting the best out of it, specs are as follows:

Athlon64 3700 (San Diego)
Asus A8V Deluxe (rev 1.xx)
Corsair 2Gb TwinX XMS 3200 C2

At the moment it's running like this:
CPU
RAM

Temps are 35 idling and 45ish under load using the stock cooler.

This is all nice and dandy but I reckon I should be able to push this a bit further but whenever I ramp up the FSB another 5Mhz system stability goes right out the door and it starts doing all sorts of truely random things. I've tried increasing the cpu voltages to 1.55v and it still doesn't seem to stabilise.

From my very limited knowledge I'm assuming the AGP/PCI lock (or lack thereof on this board) is causing me problems? At the moment I'm using the latest BIOS rev (1017) but I've heard the 1005 version does have a working AGP/PCI lock. My problem being that I don't know if this BIOS supports the 3700 San Diego cpu's, the BIOS the mobo came with did not which was a bit of a pain in the arse and I'm a little concerned about randomly downgrading my BIOS without a working floppy drive (ahem, don't ask). Or is there another way of 'fixing' this?

Any help or advice as to how to push this little beauty of a cpu any further would be much appreciated.

Cheers,

 

[Regs]

I'd say that's the usual over clock for a San Dieago, Manchester, Venice, and Newcastle core. If your PCI/AGP lock was not working, you would of been unable to boot past 200Mhz let alone with a 400Mhz+ over clock. If anything were to be holding you back it would be the PC3200 as 200Mhz is the optimal frequency. Maybe higher Vcore and higher RAM voltage, 800MHz HTT, and 2T or even 3T command rate on the ram you might get up to 2.7 or 2.8.

 

[myocardia]

Um, that RAM will do 240 Mhz. Your problem is that you have your HTT multiplier set too high. Set it to 3x, and you'll be able to go higher, assuming your power supply is powerful enough.

 

[imported_Robbeh]

Thanks for the suggestions, I'll give it a shot when I got home from the office tonight.

Cheers,

 

[imported_Robbeh]

Knocking the HT multiplier down to 3x allowed me to take the FSB to 250 giving me a clock of 2750Mhz, ran a couple of cycles of 3dmark06 and it seemed fine.

Thanks for the tips!