The Hynix HMT451R7AFR8A-PB is available from Calhoun Technologies. Calhoun Tech can help your company save up to 80% on IT Hardware. Manufacturer: Hynix Part Number: HMT451R7AFR8A-PB Details: Hynix HMT451R7AFR8A-PB Hynix 4Gb 1Rx8 Pc3L-12800R Ddr3-1600 Registered Memory Module