Has anyone used a pc power supply and boost converters? I have high quality pc power supplies I adapted for use as bench power supplies. 12V boost converters are inexpensive roughly $5 for 150W. One supply I could use has 4 18A 12V rails for a total of 680W. PC heat sinks with with fans are about $10, maybe a little more depending on power levels. I'm thinking this could power 4 high power cobs. I have spools of wire, connectors, etc. All I need is a mounting system for a 2x4 space. Any suggestions for cobs? I'm thinking vero 29. For a high power vero 29 has anyone used pc heat sinks?