Ok, I know a heatercore is preferable (that's why I use one in my other comp) but this is for a small case and space is limited. I can get the thermochill 120.1 http://dangerden.com/mall/Radiators/thermochill.asp for $67 at dangerden or I can probably pick up a used BIX for around $45. Am I likely to see any performance difference between the two? Also, does the BIX have the screw holes on BOTH sides? I'm asking because I know the thermochill does and I need 1 side to mount the fan and the other to mount to the case which already has holes drilled to 120mm size.