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**Maggi** · 28 June 2001, 13:41

Hi Xortam,

by accident I had mine above 2.2v for a few seconds and it didn't harm ...

I run my Celery now @ 1.85v while it should be defaulting at 1.5, so you should be safe at any voltage below 2.0v, but keep an eye on your cooling and in doubt just slap a 2nd fan onto the HS.

Good luck with that old MoBo and make sure you disable any "halt upon error" in your BIOS or even better, disable the VCore readout as it will report an error.

Cheers,
Maggi

**EvilDonnyboy** · 28 June 2001, 13:41

**xortam** · 28 June 2001, 13:47

Thanks Maggi ... I'm bumping it up .05v at a time, now to test 1.80v ...

**Maggi** · 28 June 2001, 13:50

Originally posted by EvilDonnyboy:
Well if it isn't working @ default speed and an already upped voltage, I doubt any more voltage increases will do anything. Obviously, something else is the problem.

Obviously, you don't know the story of OCing my Celery

http://forums.murc.ws/ubb/Forum3/HTML/001980.html covers also part of the topic.

Cheers,
Maggi

**xortam** · 28 June 2001, 14:22

Wah! Tried 1.80v, 1.90v, and eventually 2.00v but still no beep or POST. Funny I have no problem with the 850 or the 1 GHz Slot 1 in my P2B-S R1.03 at nominal 1.70v. I sure would like to keep the Gigger (noticable improvement).

**Maggi** · 28 June 2001, 14:27

hmmm ...let's see
[*] latest MoBo BIOS installed ?[*] any chance to test a newer powersupply ?[*] maybe swap CPU together with MoBo ?

still hoping ...

**Jorden** · 28 June 2001, 14:36

Latest mobo BIOS would be 1013 (beta 4) if you're wondering, xortam

Which jumper settings are you trying? My P2B only goes as far as a maximum of 8.0 x 112MHz, so I guess the LS would do the same.
8x100 will underclock your CPU, or the slotket must take over (?? Maggi ??)

Jord.

**xortam** · 28 June 2001, 14:44

It's 1013.007 and yes we do have the latest BIOS loaded. We're using the CPU locked multipliers and running the FSB at 100 MHz. Going to try 2.05v now and yank any ancillary boards ...

**Jorden** · 28 June 2001, 14:50

We're using the CPU locked multipliers and running the FSB at 100 MHz

Wonder if that will work. The P2B's want a clock multiplier on the mobo as far as I know. For both the internal and the external clockspeed. That's why I asked if you can change it on the slotket.

Jord.

**Maggi** · 28 June 2001, 14:58

nope ... they use the onboard multipliers if the CPU is unlocked.

566.6 / 66.6 = 8.5 ... 8.5 * 100 = 850

Swing, an occasional MURCer has a Cel600 running I think also on an old Asus board at 112MHz if I remember right. (9 * 112 = 1008)

**Maggi** · 28 June 2001, 15:01

Try a different powersupply, Xortam !

Could be struggling if it was bought together with the MoBo ...

**Jorden** · 28 June 2001, 15:24

566.6 / 66.6 = 8.5 ... 8.5 * 100 = 850

Problem with this calculation is that the P2B rev 1.02 doesn't have an 8.5x clock muliplier. It has a 8.0 clock multiplier.
Which concludes that 8 x 100 = 800

So they might be underclocking the CPU now, and with it being set at 850, it won't post?

Jord.

**xortam** · 28 June 2001, 16:16

We got it to boot at 2.05v, reinserted the cards and am now posting at 850 MHz (which means I'm a Gigger man now! ) Checking the temperature ... 41 degrees C, a couple degrees warmer than usual but fine. Reporting 2.096v Vcore. I'll stress it a bit with Prime95 while checking the temperature. I'll still have him check out other power supplies.

**xortam** · 28 June 2001, 16:31

Running at 56 degrees C while running Prime95 under Win98SE. Seems to be stable.

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