First post, by Robonaut
I recently acquired a NIB HP Compaq DC7900 minitower. Processor is a Core 2 Quad Q9400 2.66 ghz. My plan is to use it as a Windows XP gaming machine for old RPGs. The most graphically intense game I'm likely to run is Neverwinter Nights 2.
I will be playing on my 19" Dell CRT monitor.
I couldn't resist this PC because it was never used, but it does have a couple of significant downsides:
(1) Power supply is only 365W (and supposedly only max 12A on the +12V rail) and is proprietary (from what I've been able to tell), so not easily upgraded.
(2) It has a PCIe X16 slot, but one of the case fans is positioned stupidly and prevents you from putting anything more than a single-slot card in (as I found out when I tried to put a GTX 750 Ti in it).

I replaced the Western Digital hard drive in it with a Samsung EVO 870 SSD, so that should free up a tiny bit of extra power.
So, any thoughts on what to use?