single vs dual

[drgynfly]

A friend of mine gave me one of her old mainboards ;;

Ecs d6vaa
2 * p3/700mhz
512mb pc133 memory

Which is lots better than what I'd been using.
So far I've just got it going with 1 cpu, because
I ummm accidently broke one of the chip fans ,,,

The case this is all in only has a 300w power supply,
so question- How much extra power would the extra p3
chip use up? Also if I oc'd it to 800mhz?

Thanks
Jinxed
--

 

[w_tom]

If its a real 300 watt supply (not something overrated to
sell at a lower price for greater profit), then it probably
has more than enough power; with plenty of margin. Those who
just know without first learning numbers will promote 450 and
600 watt supplies. Don't fall for those who worship the Home
Improvement joke of "more power". Instead worry whether a
supply includes essential functions required even 30 years ago
and too often missing in those overhyped 500 watt supplies.

 

[SteveH]

A friend of mine gave me one of her old mainboards ;;

Ecs d6vaa
2 * p3/700mhz
512mb pc133 memory

Which is lots better than what I'd been using.
So far I've just got it going with 1 cpu, because
I ummm accidently broke one of the chip fans ,,,

The case this is all in only has a 300w power supply,
so question- How much extra power would the extra p3
chip use up? Also if I oc'd it to 800mhz?

Thanks
Jinxed

Nice board that, we used to have one here with with a couple of 800s in it.

You don't say what other kit you have in the case (CD's HDD's etc), but if
it's only 1 HDD and a CD drive or two and the PSU is decent quality, you
should be ok.

SteveH

 

[drgynfly]

| | >
| > A friend of mine gave me one of her old mainboards ;;
| >
| > Ecs d6vaa
| > 2 * p3/700mhz
| > 512mb pc133 memory
| >
| > Which is lots better than what I'd been using.
| > So far I've just got it going with 1 cpu, because
| > I ummm accidently broke one of the chip fans ,,,
| >
| > The case this is all in only has a 300w power supply,
| > so question- How much extra power would the extra p3
| > chip use up? Also if I oc'd it to 800mhz?
| >
| > Thanks
| > Jinxed
| > --
| >
| Nice board that, we used to have one here with with a couple of 800s in it.
|
| You don't say what other kit you have in the case (CD's HDD's etc), but if
| it's only 1 HDD and a CD drive or two and the PSU is decent quality, you
| should be ok.
|
| SteveH
|
|

Thanks
Ok, the rest of the power-drawing equipment

Matrox g400 (agp, single head)
Buslogic bt948 scsi
3com 3c590 ethernet
Ensoniq audiopci (original edition)
Quantum 9gb 10k u160
Plextor 12plex cdrom
Combo 3.5/5.25 fdd
Extra case fan

So, hopefully that's ok on a 300w ps?

Jinxed
--

 

[David Maynard]

A friend of mine gave me one of her old mainboards ;;

Ecs d6vaa
2 * p3/700mhz
512mb pc133 memory

Which is lots better than what I'd been using.
So far I've just got it going with 1 cpu, because
I ummm accidently broke one of the chip fans ,,,

The case this is all in only has a 300w power supply,
so question- How much extra power would the extra p3
chip use up? Also if I oc'd it to 800mhz?

Thanks
Jinxed

From the Intel data sheets, a P-III 700 at stock voltage pulls 18.3 watts
under load. If it will run 800 at the stock voltage that increases to 20.8
watts.

You actually have good processors for overclocking because increasing the
FSB to 133.3 Mhz, the next standard speed (which means AGP and PCI will be
normal values), would put them at 933 Mhz; a reasonably safe bet, although
you might need to increase core voltage to, say, 1.75 from the stock 1.65.

Btw, a stock 933 pulls 24.5 watts but if you increase core voltage that
would go up per the square of the increase and at 1.75 it would be 27.6 watts.

Unfortunately, ECS isn't into overclocking and doesn't provide core voltage
adjust in the stock BIOS or by jumper. However, there was a "service BIOS"
that does have that capability, if you can find a place to download it.
That's also an 'original' BIOS, though, and would probably not have any
'fixes' or 'features', if any, in the later releases but I don't know if
there are any that matter.

See here http://www.2cpu.com/Hardware/D6VAA/d6vaa_3.html

The download file is still there.

The alternative is to jumper the voltage select pins on the CPU package
itself but the original being 1.65 volts means one has to either isolate,
or remove, pins to let them become a '1' again, as well as pull one pins
low. It's doable but pulling pins off the package isn't reversible,
although one could jumper the CPU socket.

The service BIOS is easiest if there's no other downside to it.

Of course, the safest, surest, is to run them stock.