I've added an interesting piece of hardware to my folding farm. This is a Phoenix Contact PPC-5319 Panel PC from 2004. It rocks a "Banias" Pentium M with 1.6 GHz crammed through a 400 MHz FSB. It's also got 512 MB of RAM and a 30 GB Maxtor hard drive and a fresh copy of Windows 7 32-bit. Not bad for a company that also makes hammers. Where my Ryzen 7 2700 is estimated to rake in 150,000 points a day, it seems this beauty will bring in about 59. Efficient in any way? No. Really cool? Yes.
It picked up work right away, so I guess there are some WU's optimized for a 32-bit glorified toaster.