Core voltage on BF6/Asus Slocket

[theflyingrat]

I have an Abit BF6 with a Celeron 633 on an Asus Slocket adapter. With the Celeron finally running 950 (thanx to all who replied to my previous post!), I'm running into some severe stability issues. There are jumpers on the Slocket that allow you to adjust core voltage. I leave them on 'CPU default setting' so I can use Abit's SoftMenu III in the BIOS. However, although it says the CPU core is changed to 1.8 or 1.85 or whatever, all monitoring utilities (including the 'System Health' in the BIOS) I use still report the Cely's default 1.65 setting. One time when I set the BIOS to 1.80v, it mysteriously worked , booted to 1 GHz (w00t!), and worked fine until I went back into BIOS, adjusted the core to 1.85 and tried to specify a higher bus, and it failed (of course!). On this board, you have to clear the CMOS and start over again if your boot fails. Is there a trick to getting core voltage adjustment working with these components together?

p.s. - when I leave voltage on Default in BIOS and adjust the core voltage with the jumpers on the slocket, it gets REAL funny results - like setting vcore to 1.4v!

Celeron 633@950 GlobalWin Fop32
GeForce2 MX
voltage deficiency
Cheap case, CD-ROM
usually runs about 28C
Hyundai PC133 - runs CL2 fine

[Mr B]

That's odd...you should be able to set the vcore on the slocket, and have it recognized by the BIOS as default.

I did it this way on my Soyo (6BA+III), and it worked fine. Set it to 1.9v on the slocket, and the BIOS read that as default for my C600. I was then able to tweak the vcore thru the BIOS up to 2.1v.

What do you have the jumpers set for as far as FSB on the slocket??, and do you have it jumpered for Coppermine? Just curious...

Mr B

[theflyingrat]

There are two other jumpers to be set on the slocket:
1)either Intel or Joshua (that Cyrix III thing)
2)Celeron or two settings for PIII (I'd assume 100 or 133 FSB default)

I have it set to Intel/Celeron.

Thanx for the post, B. I know I'll be kicking around my old Tbird once I overcome this problem. Due to (I'd assume) low voltage, it takes a restart or two to get the machine running when I turn it on. When it magically worked at 1.8V, it started fine. I WANT MY 1.8v back! :)

[Mr B]

Sounds like you've set those right, then (intel, not Joshua, and set the FSB jumpers for 100).

Curious why it would appear as 1.4v in the BIOS, then.... There isn't a third jumper labeled "Coppermine" on there?? My Soltek has this, I thought the Asus did too.

Mr B

[theflyingrat]

Not exactly.....Just Celeron and the two PIII settings.....and the FSB isn't jumpered on my slocket...it's set in the BIOS. I think the Celeron jumper setting on the slocket tells it to start at 66MHz. I could be wrong here, though.

I'd go ahead and just try every possible combination of jumpers, but like I said, it's really finicky with starting up...it could take days to get my machine to boot again! I'm wondering if the 'CPU default' jumper settings don't override whatever I set in the BIOS. Like I said, the SoftMenu (in BIOS) will say that it's running 1.8x v, but the PC Health (also in BIOS) will still say 1.65v, the CPU default, even after repeated reboots.

Thanks again for putting up with the Ubernewbie here.

[theflyingrat]

Thx man...think I got it figured out. It works if I match the BIOS setting with the jumpers on the Slocket, it seems to work fine. Still a weird prob though.

Yippee!