Excellent radiator. A true 2 pass radiator. This keeps my older file server in constant stable opperating condition in a HOT cabinet. Cools LGA 775 3.2, chipset and and old x700 video card with no problems. Has been a true asset to my setup. I have not come across better built radiators than DD, some are equivant but none are better. Only thing I would do to improve this is tap the mounting holes with 4mm threads.