Who sucks the most watt? a P2-350 or a P3-700

[Exiler]

Allright, my P2-350 Slot 1 says its using 2.0 VCore.
Its a pretty old chip, got it when the P2-350 first came out. Nothing Overclocked.

Now I know that a Flip-Chip P3-700 uses about 1.65-1.7 volt.

So my question is considering the POWER issue even though the P3 is faster than the P2, the P3 uses less VCore, does that mean it uses LESS watts?

What I mean will it suck less power from the mobo through the POWER supply.

The reason for my question is I use:

P2-350 Slot 1 chip
P2B mobo
1 64MB RAM PC-100
1 HDD UDMA/33
1 8X CDROM (Love it, works well and does not sound like a jet engine like a 50X)
2 NIC cards (1 for DSL, 1 for network connection)
1 SoundBlaster 16 ISA (Powers my speakers with no problems)
1 ISA US Robotics 56K Modem
1 Geforce 2 MX AGP Card
1 QuickCam Card PCI

With all this setup, my power supply says 135W (Last time I let anyone replace my power supply from a 250 to this low crap), even though my power supply is 135W, I face ZERO hickups or anything.

If I replace my P2-350 with a P3-700 FC-PGA (using Slotket) will the P3-700 suck more voltage? a C0o P3-700. Considering my P2-350 uses 2.0 VCore.

[Placid]

A 350mhz P-2 requires 10 amps.
To run a 700mhz cpu requires a power supply with about 14 amps available on the +5v line.
Every power supply I have looked at has the current ratings on them somewhere.
The power requirement I am stating is what intel has posted. So you can probably get away with about 1-2 amps less but if your going to overclock you need to add 2 amps per 100mhz over 700.

[SP]

Power in watts = voltage x current

I don't know right off hand how much power a PII-350 consumes. There are places that will tell you. Anyway, based on a quick look at an Intel document a PIII 700 draws 14 amps of current at either 1.65v or 1.7v (denpending on stepping). So, that's about 24 watts. Of course this is roughly. Every chip will vary a little bit. Motherboards use switching regulators on them to provide the core voltage for the CPU. If we assume the VRM (voltage regulator module) is 75% efficent (it's probably about 80%, but we'll be conservative)that means it would need about 32Watts of input power to the VRM. The +5v is probably the line used to provide power to the VRM. So, if the +5v line is used then that means the CPU will require about 6.4 amps on the +5v line.

Okay, according to this page (http://www.plasma-online.de/index.html?content=http://www.plasma-online.de/english/help/almanach/cpu_power.html/) a 350Mhz PII require about 20W. If that's so then assuming the same things as before the VRM would need about 27Watts from the +5v line which would be (27/5) or 5.4Amps. So, based on our assumptions here, your new PIII 700 will draw maybe about 1 more amp on the +5v line than the PII-350 did. Will your power supply cut it? I don't know, because I don't know how close to the maximum current your drawing from it now ( your motherboard, ram, cards, and drives will use current on the +5v line also) , but I would certain hope that you would have that much room left. Anyway, you'll be okay if you have about an amp to spare.