about cpu coolers

There's a bunch of coolers that fit multiple socket-types, but its almost completely hit-or-miss on how well each of them might perform. Nobody seems to provide measurements for how much heat a given sink/fan dissipates. The best you get are airflow measurements.

If you are concerned about optimal cooling (for overclocking or whatnot) then get something with maximum surface area and a powerful fan. If you are concerned about noise, look for something either without a fan (much larger by necessity) or designed with better parts for quieter operation.

Most of those over-the-top fancy coolers are just for show, and you can get better performance out of a stock cooler with some Arctic Silver paste.

• Get one that fits (on your socket and in your case)
• Get one that works (check ratings for measurable improvements and not fanboy rantings)
• don't skimp on the thermal material (Arctic Silver)

EDIT: Check your Mobo, case, and processor manufacturer for tested coolers in their manuals. Sometimes it pays to stick to what they tested and warranty.

As far as I know, heatsinks are fitted to the socket and die. Seeing as AMD and Intel CPUs use different sockets and have different die sizes, then no, heatsinks are not universal across CPU brands (or even generations within brands). You will need a heatsink/fan assembly though, no matter what processor you choose. If you're not planning on overclocking, just get the retail box version and use the stock HSF that comes with it.