The machine I use everyday is an old Dell Dimension 4600. I've upgraded it to high hell and beyond whatever it was supposed to do though. It is unfortunately a Pentium 4, but I made sure to upgrade it to be the "best pentium 4" I could. (yes, an oxymoron) 🤣
So, it's CPU is a Pentium 4 Extreme, 3.2Ghz, socket 478. I would have liked to make it a 3.4, but I couldn't find any and since it's still using stock cooling I didn't want to press my luck.
The GPU is the best AGP card around, the Radeon HD 4670. Why? Because why not. It plays 1080p video on youtube just fine and my monitor is plugged in through HDMI. Not because I prefer it over DVI since it's the same thing, but I like not having to twist the little screws anymore.
The Hard Drive is a Velociraptor. I once tried to use an SSD in the machine, but that was unstable for some reason, So I put that in the modern laptop I never use.
The RAM is maxed out at 4GB DDR 3200, only 3.2 of it is seen by the OS.
The Sound is a SB Xfi.
If I had more PCI slots I would have put in a Killer NIC (now hanging out in my Tualatin) and USB 3.0 just for kicks, and maybe when SSDs get more affordable I'll try that again.
It runs XP like a champ, and I have tried Windows 7 on it. 7, runs okay, but not as speedy as XP, so I'm sticking with XP despite it being dead in a few months. I was originally hoping that ReactOS would be in a usable state by then, but I guess that's not happening any time soon.
I also have another machine with a Pentium D, it just isn't fun to use though for some reason, mostly because the damned proprietary PSU and small form factor severely limit its potential.