1-14 Chapter 1: Product introduction
1.7 System memory

1.7.1 Overview

The motherboard comes with two Double Data Rate 3 (DDR3) Dual Inline Memory Modules
(DIMM) sockets.
A DDR3 module has the same physical dimensions as a DDR2 DIMM but is notched
differently to prevent installation on a DDR2 DIMM socket. DDR3 modules are developed for
better performance with less power consumption.
The gure illustrates the location of the DDR3 DIMM sockets:
Channel Sockets
Channel A DIMM_A1
Channel B DIMM_B1
4. Carefully remove the heatsink and fan
assembly from the motherboard.
5. Rotate each fastener clockwise to ensure
correct orientation when reinstalling.
P8H77-I

P8H77-I 240-pin DDR3 DIMM sockets

DIMM_A1
DIMM_B1