Hey all, I'm about to upgrade an old AM3 PC. Don't want to spend too much money on it. Will probably be adding an Athlon x4 and 750 to it. I'm also considering a new CPU cooler. Saw these two on eBay for 10-$15. But I'm kind of stuck on the shape. Which shape is better? One seems lower profile/horizontal. I'm planning on a mini tower (computer is mATX). Is one of these better in terms of cooling? Is being upright better than horizontal? and does having 2 fans instead of one make a big difference? Should I look for something with more heatpipes? Thanks for any suggestions.