Despite the lack of achievements, having seen both versions running side by side I strongly recommend this one on PC. If you're worried about not having a save ME1 is $19.99 on Steam, so $5 if they do another crazy 75% off sale...
mmm... I'll probably be using a C2D E4300, 2GB RAM, and a G80-320MB. That should be more than enough (to surpass the 360 edition, in terms of framerate & image quality), right? My monitor would be 1400x1050. i.e. Was the first one a good port/conversion?
(Note: computer was built from reviewing said hardware or from gifts, so I didn't pay a dime for any of it )