think you're going to have to do an atx conversion.

Even if the power supply has a form factor , there aren't going to be any good power supplies that actually use it

I'm not looking to use a high wattage PSU in the 500+ range. Rather, I'd like something around 300-350w to at least have some actual overhead. The current unit is a 230w PFC supply made by Seventeam and model ST-231MZ if that helps anyone. It's almost like a Micro ATX SFX PSU in shape and size but smaller all around.

An ATX conversion is not only impossible due to the form factor (this case is sized like a shuttle PC, which means it's only a bit larger than a Gamecube), but would kill the portability and convenience factor which is why I bought it in the first place.

I have no idea myself, but you could get away with using the stock PSU if you stick with a Geforce3 or Geforce4 I think. My dual Coppermine P3 with a Geforce4 ti4200 used a 250watt for years before I got it. Kinda out of my comfort zone personally but just saying it might be fine 😀

I'm currently wanting to use an ATI X1550 I have as it's the nicest AGP card I own and this rig is going to have a P4 Extreme Edition put in it at some point soon. A GeForce 3 or 4 would be fine as power consumption on those is pretty good. But, it would bottleneck the system for what I'm trying to do with it.

According to what I read online the X1550 card uses 27 watts, plus the 80-100 for the CPU (yay P4), and I have to find specs on my MOBO, HDD, floppy and disk drives. Max power from the PSU is 230w PFC according to several listings online for the unit.

Looks like a renamed Shuttle mini-pc. Those are proprietary PSU's.

By the looks of the internals, one suspects a 1U power-supply could be made to mount in the CD-ROM location. Of course that would mean one can't use an internal CD-ROM. But quality 1U power-supplies can be had for very little, often-times--I have an FSP 1U unit capable of 350W that I picked up for less than $15 a couple years back.

Could be an option.

I would try to work with the original PSU, recap it if necessary.

I cant find a good picture showing the max current on the rails but I think the 12V rail is 13A = 156W, confirm this by reading the sticker on your PSU.

If your P4 EE is a Socket-478 Gallatin it will probably top out at ~80W, If you use a singe HDD and a single optical drive thats another 10-20W.

Any video card using 50W or less will probably work, especially if the video card takes some of its power from the 3.3V and 5V lines. The X1550 use less than 50W and should work just fine, as long as the PSU is in good condition I would dare to try it.

I have benched a watercooled Gallatin @4GHz with an AGP Radeon X1950 Pro using an old Chieftec 300W PSU with a 12V rail specced at 204W.

Skyscraper wrote:

I would try to work with the original PSU, recap it if necessary ...

^ Agreed.

That cube case looks like a cooling nightmare.