Many thanks to all, and sorry for too late replying

G H Z> How far could you reach on the Deluxe board?
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I could see 5.25 SP1M run completed on P5K-D once...
I don't know why, but my P5K-D goes unstable under mere -40deg-C, unfortunately

C.h.r.i.s> Good luck for 32M
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Yeah, I expect around 9m24s@5.3G with 5:6 mode...I need stronger DDR2 memory for more

Misko> I have one question can u explain what vio above nominal 3.3V do to CPU,
Misko> I suppose by rising Vio, some other voltages (some CPU related) rise also.
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In my experience, higher Vio for P5K contributes slight improvement for stability at 32M run.
I couldn't complete 32M run at 530x7-5:6 with Vio=3.4V.
3.5~3.6Vseems suitable for longer SuperPI run on P5K, I think now.

Misko> And what about 12V and 5V can u share voltages for those 2 also?
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I have not checked the infuluence of rising 12V and 5V so far.

boblemagnifique> Are you find vmod Vpll please ?
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Not yet...I'll try later.
Though I tried Vcore, Vdimm, Vnb, Vsb-core, Vsb-chip, Vfsb so far,
I feel Vcore & Vdimm mods are enough,
and Vfsb-mod with usual LM324 grounding method has negative effect, so not recommended

Stapler> Why did you enable /noguiboot, did this improve stability
Stapler> or allow you to boot at higher frequencies?
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Just I want to reduce main memory usage a bit, but it may have little effect

And I'm very glad to see duck-san here, many thanks!!!
We hope we will see your awesome run again in 'appropriate' future