It's a P4 1.4GHz, on a P4T Asus motherboard Intel 850 chipset, with 256MB Rambus (4 RIMM's of 64MB). The video card is an Asus V6600 Geforce256 32 MB AGP4x (!), I didn't know there are different AGP slots ! AGP 2x cards don't fysically fit in this 'AGP 4x pro' slot ! (see http://www.hardtecs4u.com/reviews/2001/agp4x_e/index2.php for more info). The fan of the V6600 is worn down, I'm now looking for an elcheapo fanless replacement.
Brought it to the dump ...
Unfortunately, the harddrives died and the 256 Mb is just not enough to run XP comfortably. So it had to go. Of course it will be properly recycled.
Found a fanless video card
I've found the cheapest ATI Radeon card, works like a charm. No fan, nothing to break and no noise.
The old video card was deteriorating after a while, white area's on the screen got a grey tail point to the right. Everything was still readable, but barely. Funny to see that an overheated IC doesn't quit with a bang, but can also fade away ;-)