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Bulding A Comp. With What I've Got


Dtaylor
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:) I want to build a new comp. with what I've got...let's see...I got a case, a CD drive, floppy drive, A modem and a LAN card, a video card, a monitor, and the only things giving me trouble are the processor, the motherboard, and the power supply. I've got a few questions; will a pentium compatible processor work in a pentium 2 or up board? What type of motherboards would run with a power supply of these specs: 115V~6.0A(input)

230V~3.0A(input)

OUTPUT 200W

Red: +5V 20A

Yellow: +12V 8A

White: -5V 0.3A

Blue: -12V 0.3A

Black:GND

Orange: PG

 

Would that power supply run a pentium 2, 3, or 4 board? Or would it only run a pentium 1 board? How many watts are required for a pentium 2, 3, and 4?

 

If that Power Supply is no good for anything but a pentium 1, I'll dig up another one, but if you're going to post here, please make USEFUL posts, not stupid ones like "just shoot it" because I've heard that one way too many times :glare: .

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IMO it is going to be hard to find a MoBo that will run with all that on a 8amp 12v rail. It would be in your best interest to procure a larger power supply.

 

Big Red correct me if I am wrong.

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If your old board is an AT form factor and the case is really old you may need to purchase a new case as well. so you will need:

 

New ATX Power supply, (anything over 300W will be fine)

 

New Mobo - make sure that it's ATX and at least P3 or K7 ATX and at least takes SDRAM -168 pin

 

New processor - processors are not backward/forward compatible. They will only work in the package they were designed for. Unless you purchase and adapter like 423-478 ect.

 

New case - with an ATX mobo if your case is AT it will not fit/work. AT PSU's are not controlled by the mobo wheras ATX are - you need headers on your mobo for power/reset ect.

 

If you have old ISA cards for modem ect. you will need to purchase a mobo with ISA slots as well as PCI, or replace all ISA cards.

 

You can find these items on ebay or very cheap off OCC guys. I have everything listed above as well as lots of newer stuff.

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please make USEFUL posts, not stupid ones like "just shoot it" because I've heard that one way too many times :glare: .

477738[/snapback]

 

NUKE... Just Do It! :P

 

Would that power supply run a pentium 2, 3, or 4 board?  Or would it only run a pentium 1 board?  How many watts are required for a pentium 2, 3, and 4?

477738[/snapback]

 

Here's a pic of a PSU (145w) label outta' a PIII system... should give you an idea eh? ;)

 

may17110ig.jpg

 

Oh and for point of reference... this is what an ATX mobo power connector looks like :)

 

may17153yu.jpg

 

As for what that PSU of yours will run is dependant on it's mobo connector, if AT a SS7 platform @ 550-600Mhz is as high as you will stretch it ;)

 

Processor Wattage requirements (approximations :P)

Pentium I = 3- 8w

Pentium pro = 23 - 43w

Pentium II = 36 - 41w

Pentium III = 16 - 40w

Pentium IV = 69 - 100w+

 

New generation P4's reportedly will go up to 130w :blink:

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I get the point. A 200 watt power supply should run a P4. The only problem is, I'd need to get a new one anyway, because the 200W has the wrong type of motherboard hookup. What would happen if I had a motherboard that was meant to run at 90W and I hooked it up to a 150W power supply?

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What would happen if I had a motherboard that was meant to run at 90W and I hooked it up to a 150W power supply?

 

 

You'd have surplus wattage/grunt 'on tap' remember PSU's don't cycle @ 100% duty/load (it's closer to 75%) ;)

 

As for the 200w PSU being sufficient to run a P4, keep in mind the processor alone needs 100w+, you haven't factored in m/board & memory, fans, HDD's & optical/floppy/zip drives or USB items like webcam/pocket & external drives ;)

 

I think it's pretty fair to say that 350/450w PSU's are considered entry standard these days ;)

 

If your connector is different to that illustrated... you'd still be able to run a SS7 platform (split PWR connectors) with a processor peaking @ around the 600Mhz mark (with a little OC'ing :P)

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Yeah right. The computer I'm typing from currently has an AMD duron, 800 mhz with only 150W power. It runs a burner, a floppy drive, and 2+ fans as well. I'll get back with you later on specs of an AXT power supply I found...

Edited by Dtaylor

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477864[/snapback]

 

 

I see someone used the avy I made. :) :) :)

 

LOL ....

 

 

No, buddy. You may as well get a barebones AthlonXP setup and install what parts you have and get a decent cpu for cheap.

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Most pre T-bred athlon and pre P4 intel boards draw power fromt he +5v for the the CPU.

 

I have an older 425w PC Power and cooling that can't run any of my recent comps. it has something like 60A on the +5v and 15A on the +12v.

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Yeah right.  The computer I'm typing from currently has an AMD duron, 800 mhz with only 150W power.  It runs a burner, a floppy drive, and 2+ fans as well.  I'll get back with you later on specs of an AXT power supply I found...

481729[/snapback]

 

Hmmm... okay but that 150w is cycling @ 75% thus a constant 112.5w, now a Duron 800 requires 42 watts @ peak usage, just for itself :blink:

 

 

So you can calculate your own power requirements here's a link to a PSU wattage calculator ;)

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