I have 5 that i use all pretty equally, going from lowend to highend....
Work 1, Biostar g41 chipset based motherboard, core2quad q8300 @~2.6ghz, 4gb of random ddr2, shitty internal graphics.
Work 2:
Asrock extreme 7 gen 3 z68 based motherboard
32gb of gskill ripjaws 1600mhz, 6-7-6-18 ram...