P3 666 MHz on Siemens-Nixdorf D1064

[Wunder]

Sitting here with 233 MHz and life just sucks. The motherboard is equiped with a BX chipset, wich is good, but allows only changing of multiplier with a max of 5x, wich is less good. Then i heard one can cover pins on the slot and achieving higher speed. I was thinking maybe I could put an FC-PGA P3 with 100 MHz FSB on a slot1 converter and then cover pin A14, making the processor run @ 666 MHz. Wondering if someone has tried that with this motherboard and if it works...

P2 233 MHz
SNI D1064
2*64 meg RAM
Savage4 16 meg
some other stuff...

 

[klosters64a]

Siemens-Nixdorf PC's are extremely rare in North America. I hope it's safe to assume that they're an example of superior Teutonic engineering. You probably don't need to worry about the x5 Multiplier limitation, or preventing any pin on a Slocket from contacting its mate in the Slot 1 "trench." P3E's dictate their Multiplier to the mainboard, which responds with a click of the heels and a "zu Befehl."
There may be a Clock Speed limitation of the BX mainboard, which may be overcome by a Bios update. I'd check into this before trying to run a P3E 700+(?).

 

[Sohryu Asuka Langley]

id say check for a new bois b4 runnig a p3 at all

if you have a 233 then im takinga guess ou bought that thing b4 the p3s were out... my old GA686BX was an old but ok p2 bx board...now has p3 1G and cellt 766 support via a new bios

 

[Wunder]

klosters64a (Mar 17, 2001 11:40 p.m.):
Siemens-Nixdorf PC's are extremely rare in North America. I hope it's safe to assume that they're an example of superior Teutonic engineering. You probably don't need to worry about the x5 Multiplier limitation, or preventing any pin on a Slocket from contacting its mate in the Slot 1 "trench." P3E's dictate their Multiplier to the mainboard, which responds with a click of the heels and a "zu Befehl."
There may be a Clock Speed limitation of the BX mainboard, which may be overcome by a Bios update. I'd check into this before trying to run a P3E 700+(?).

Hardly understood any of that... Anyway the thing is ive already got the latest bios-upgrade, and it almost dont allow any fiddling at all. I guess its made for newbies since it barely has even the basic settings. Therefore i think im stuck with the pincovering and the x5 multiplier. The siemens-nixdorf support said NO WAY about P3s on this board, the highest possible being a celeron 533 (though i dont see how that would be possible, 5*66=333...)

 

[Tim-]

Since Intel chips are multiplier locked, the motherboard will have no control. The 533 has a multiplier of 8 and that will give 533 at 66FSB. The MB may not have the capability of providing the lower Vcore voltage required by the coppermine family of chips, and that may be the problem. The 533 ppga was the last of the Mendocino celerons that ran at the higher voltage.

 

[Wunder]

Tim- (Mar 18, 2001 10:34 p.m.):
Since Intel chips are multiplier locked, the motherboard will have no control. The 533 has a multiplier of 8 and that will give 533 at 66FSB. The MB may not have the capability of providing the lower Vcore voltage required by the coppermine family of chips, and that may be the problem. The 533 ppga was the last of the Mendocino celerons that ran at the higher voltage.

It is true that the processors have fixed multipliers, but that only counts for trying to set the multiplier to a higher number than the default. It is still possible to decrease the multiplier on the motherboard and achieve a lower speed. A celeron with x8 default multiplier that is placed on a motherboard with a x5 multiplier setting will therefore run at 5*FSB. At least this is the case for P2s, but maybe P3s have their multiplier locked downward aswell?

Im not worried at all about the voltage issue, since there are FCPGA --> slot1 converters that have adjustable voltage.

 

[klosters64a]

All P3E's have a Fixed Multiplier. It cannot be changed. You can run the Front Side Bus at a slower speed. If the processor is designed for a 100 Mhz FSB, it'll run just fine at 66 Mhz, assuming that the mainboard offers 66 Mhz, FSB. This is underclocking. May you be able to avoid it!

 

[Wunder]

I belive in what you say, but that creates another question: If i try to run a P3 with say x7 multiplier, and the motherboard is set to x5, will that prevent the computer from booting? Will the P3 "override" the motherboard setting?

Also id like to hear if someone knows a good slotket converter that has adjustable FSB and voltage, this to help me avoid the pincovering issue.

 

[Wunder]

New word from SNI is that D1064 has x8 multiplier. This should open some new doors or does it?