Mother board power connector

[tony draper]

Been busy upgrading my computer and stuck my old MB and CPU into Bros machine both are working fine, was thinking of using the old MB and CPU and memory out of bro's puter and upgrading another machine for a neighbor.
Bit of a puzzle, the power Supply for this puter is a ATX ok,it has the normal 20 way power plug that goes into the mother board 24 way power socket plus the extra 4 way one that goes into the extra four ways on the mother board power socket but the new mother board is a bit more modern and has another four way socket alongside the CPU,I have a vague memory that the extra four way on the main socket is not really needed,anybody know if this is true?
I know new Power supplies only cost a few quid tiz not meanness that is the motivation the computer case is from a HP pavilion desktop and a normal size PSU is a tad long to fit in,the PSU in the case must be a proprietary one used by HP and is shorter than the standard psu.
Can stick a new un in if necessary but it will be a bit of a squeeze.
:confused:

[Bushfiva]

The extra 4 pins on the 24-pin socket are 12V, 3.3V, 5V and COM. The 4 pins near the CPU are COM, COM, 12V, 12V. Whether or not you plug something into that CPU connector is a separate decision to whether or not you have something to plug into the end of the 24-pin socket.

[tony draper]

The one four way this PSU has is +12v +12v and two commons,reckon the easiest solution will be to get a new case,they are cheap enough,pity tiz a neat wee power supply.
Thank you Mr B.

[Parapunter]

If it's new case time, may as well make the neighbours go green:cool:
http://i56.tinypic.com/142yc11.jpg
http://i56.tinypic.com/xkybm9.jpg
http://i56.tinypic.com/2inkgx.jpg

[Bushfiva]

Depending on the CPU you're putting in, there's a reasonable chance you can do without the CPU connector: it originally came in for power-hungry P4's. If you have a low-power CPU, you'll be fine.

You seem to have an ATX 1.x power supply and an ATX 2.x motherboard. Compared with ATX 1.x, the 2.x spec requires rather more power on 12V, and less on 5V & 3.3V, because modern motherboards generate their own 5V and 3.3V from the 12V rail.

The extra pins on the 24-pin Molex are simply because the molex connector itself is rated at 6A per pin.

[tony draper]

Its a dual core AMD ATHLON 2.8 GHZ, the smaller PSU I describe above is only 200 watt so tiz probably a bit weedy anyway.
Yer Mr Para desktop cases seem to be making a comeback,always though them a more sensible arrangement space saving wise,clag yer monitor on top and you int got a daft big tower to stash somewhere/
Was looking at em tother day,will have to wait until next month,overspent on me puter budget this week.
I remember when ATX desktop cases were so thin on the ground I converted a tower with a hack saw and file so it would lie flat and have the CD rom drive the right way up.
:uhoh:
the problem I have wi Bro Drapes machine is it still has the original CD DVD players in the case and they tended to be longer than the modern ones so the space between the back of the new power supply and the back of the drives is almost none existent,so will get new sata drives I think,that should sort it.

[Bushfiva]

200W? Ah. There's 95W gone with the Athlon. It might still work though, depending on the graphics. But you'll find a modern ATX 2.3 power supply may be more economical anyway (they have to be 80% efficient) in the long term. Some of the older supplies are only 30% efficient.

[seanbean]

I recommend this link (http://extreme.outervision.com/psucalculatorlite.jsp) to work out your power budget/PSU requirements. My advice is not to skimp - you may wish to upgrade in the future.