Swiftech Apogee HD High Performance 4-Port CPU Waterblock - White Apogee-HD-WT Improved thermal performance with emphasis on Intel and AMD latest and upcoming processors: the HD is Socket LGA2011 (Intel) and "Bulldozer" (AMD) ready Reduced flow restriction compared to the Apogee XT Rev2 Fit 3/4" Tube OD fittings. Max 3/8" tube OD fittings Fit 5/8" Tube OD fittings. Max 1/2" Tube OD fittings Socket 1155, 1156, and 1366 (back-plate included)