Nope. Dumping the ram into one machine and mix/matching best parts (say, one was a 2GHz P4 and one was a 3GHz P4) is about all you can do, practically speaking.
Scientific progress goes "Boink?"
Windows Gaming Box: AsRock Z77E-ITX / i5-3570k @ 4GHz / 8GB RAM / GTX 660Ti / Samsung EVO 250GB / Seagate Momentus 750GB / Silverstone SG05.
NAS: Foxconn D-70S-P (Celeron 1037U) / 4GB DDR3 / 4x Toshiba DT01ACA200, 1x DT01ACA300, 1x DT01ABA200, / Fractal Node 804.