Dual celerons with some of the PIII mods helps overclock!

[jaybird]

I decided to try my hand at the PIII mods, C10 replacement, voltage regulator replacement, add wires to sockets on underside of board, modified NEO S370's, 1100E PIII's, etc.

Well, I had partial success, 1 PIII in either socket at 110 Mhz, FSB.

But I wanted dual!

So just for grins I decided to leave all in place except for the PIII's, Neo's and additional wires, and reinstalled my 366's.

Previously 366's dual stable at 550 in Win2K, 571 single in 98SE.

With mods in place dual at 571, single at 583 but I wanted more!

I lapped the cpu's and now have 583 dual, 594 single and will go into Windowz at 605 single but freezes at splash screen!

This BP6 is a version 1 board, Rev .40, I am at 2.20 volts on the cpu's.

FEP-32's with Arctic Silver and a 486 fan assembly plus Arctic Silver on the Northbridge.

My configuration is as follows:

Win98SE/Win2K dual boot
521 meg PC133 SDRAM (1 256, 2 128 sticks)
G400 MAX dual head 32 meg AGP vid card
SBLive Platinum (original) with live drive using Audigy drivers in 2K.
WinTV GO! card
generic Firewire card
Adaptec SCSII card for X6EL scanner
Linksys ISA 10/100 NIC
Lite On 52X 24X 52X 'burner
Sony DVD-RAM/DVD-R 'burner
Sparkle 300 watt PS
Pioneer 104S DVD player
Kenwood 52X TrueX cd player
Modified RU BIOS with PIII micro code
High Point ATA on board ATA 66 controller with 1.26 BIOS, 1.22 drivers in 98SE and 1.28 drivers in 2K
1 20 gig WD ATA66 7200 rpm hdd on IDE 3
1 60 gig Maxtor 60 gig ATA100 7200 rpm hdd on IDE 4

So far, about $10 US and 3 hours of my time (for Celeron updates)

I'm thinking about a couple of 78 watt Peltiers ($14 US on Ebay) and a 40 watt Peltier ($12) for the Northbridge (also on Ebay).

OBTW, 433's max out at 722 at 110 fsb, since this board goes 106/108 and 433's are dirt cheap on Ebay, what the heck.

Besides my new Gigabyte board is on the way and I need something to keep me out of trouble

Regards,

jaybird

[InactiveX]

Good news!

What replacement components did you use? I may do the same.

[jaybird]

LM317T regulator, just cut old one at leads, didn't even remove from board. Soldered new in place (must add heatsink!)

C10 was 100, now 1000

In-line cap with 317 is 1200 to 1500, positive to v-in on reg. and neg. to ground.

Thats it!

[jaybird]

OBTW, the v-in on the regulator does NOT get re-connected to the board at the old regulator terminal. It goes to the +5 volt terminal on the ATX power supply plug! Please see Yoshiro's "Original PIII Mods" per this website.

Regards,

jaybird

[InactiveX]

Thanks. I'll give it a try.

[InactiveX]

Please see Yoshiro's "Original PIII Mods" per this website.

I'm a bit mixed up. There is no Yoshiro I can find here.

Did you mean Yoichiro? http://geta.yoh-tech.com/eng_top.htm

or yoshihiro? http://www.bp6.com/board/viewtopic.php?t=1134

or am I missing something?

[InactiveX]

Having read both links, I think it was probably the former.

I'm sure I had an LM317T around here somewhere, but I can't find it in any of my boxes of bits.

[jaybird]

The path is:

Main Menue/Navigation/Articals Data Base/BP6 Specific/Original PIII Notes/Yoichiro's Site

Have fun!

regards,

jaybird

[hyperspace]

Did you mean Yoichiro? http://geta.yoh-tech.com/eng_top.htm

This is the correct site.

[InactiveX]

Thanx. May take a while before I find time, but I'll post results here.

[jaybird]

It was the friken powersupply all along!

All my strange problems can be traced to the power supply!

Not able to run dual on the BP6, stange shutdowns on the "new" Gigabyte (which still turned out to be a "bummer").

As I write this I am reformatting my drives on my BP6 at 1100, dual !

My PS was not "dead" but very "sick".

12 volts was actually 10.5 to 11.25!, 5 volts was 3.3 to 5!

NOTE:! BIOS still showed it at 12 volts!

Only a volt-ohm-meter gave me the "correct" reading!, Aint that a bitch!

Maybe others should be made aware of this strange problem?

Will keep you posted as to the end result.

Regards,

jaybird

[hyperspace]

It was the friken powersupply all along!

All my strange problems can be traced to the power supply!

Not able to run dual on the BP6, stange shutdowns on the "new" Gigabyte (which still turned out to be a "bummer").

As I write this I am reformatting my drives on my BP6 at 1100, dual !

My PS was not "dead" but very "sick".

12 volts was actually 10.5 to 11.25!, 5 volts was 3.3 to 5!

NOTE:! BIOS still showed it at 12 volts!

Only a volt-ohm-meter gave me the "correct" reading!, Aint that a bitch!

Maybe others should be made aware of this strange problem?

Will keep you posted as to the end result.

Regards,

jaybird

Power supply problem. How interesting. My problem was diifferent but it turned out to be the power supply. Bad capacitors and power supplys. Have you checked your capacitors or have you already replaced yours?

Dual 1100 CPU's!? Tualatin? Which modification(s) did you use?

[jaybird]

First, to answer your question(s):

EC10 replaced, was 100 mf, now 1000, 6v.

Voltage requlator replacement; used RadioShack LM317T (maybe should have used LM370T?).

I just snipped the leads, left old regulator on board, + lead to 5v
on main board connector socket, negative side of cap to ground plain on board.

Noise supression cap attached to LM317T is a 1200, 10volt (very large but the only one I had on hand).

Modified NEO 370's

PIII 1100/256/100/1.75 volt CPU's

My question for you is what voltage regulator did you use and what cap off the regulator?

My system is unstable and will not allow me to load any OS completely without locking up or telling me that I have corrupted files.

Stock NEO heatsinks, 95 deg. F to 105 deg. F for cpu's.

Any ideas or tips please?

Regards,

jaybird