400MHZ

Compatible With HP-Compaq Pavilion (A810n, A810tw, A810y, A813w). PC3200 400MHz. 2GB KIT (2 x 1GB). 2GB KIT 2 x 1GB HP Compaq Pavilion 491. Your computer loads a program or file you select from the hard drive in to your computers RAM, then it will access each bit of data from there.

Compatible With HP-Compaq Pavilion (A612n, A616x, A626x, A630n). PC3200 400MHz. 2GB KIT (2 x 1GB). 2GB KIT 2 x 1GB HP Compaq Pavilion 491. Your computer loads a program or file you select from the hard drive in to your computers RAM, then it will access each bit of data from there.