Rsi 775 Cpu Cooler Product Type - CPU Fan Compatibility -- Intel Core 2 Extreme / Core 2 Duo / Pentium D / Pentium 4 HT / Pentium 4 / Celeron D (Socket LGA775 Series) Dimension -- (L)110 x (W)110 x (H)80 mm Fan Dimension -- 90 x 25 mm Heat Sink Material -- Aluminum Crotch Fin, Aluminum Core