abit ax8 rev 1 User Manual

Hardware Setup

2-3

2-3. Install System Memory

This motherboard provides four 184-pin DDR DIMM slots for Single/Dual Channel DDR 400/333/266
memory modules with memory expansion size up to 4GB.

Table 2-1. Valid Memory Configurations

Bank

Memory Module

Total Memory

Bank 0, 1 (DIMM1)

256MB, 512MB, 1GB

256MB ~ 1GB

Bank 2, 3 (DIMM2)

256MB, 512MB, 1GB

256MB ~ 1GB

Bank 4, 5 (DIMM3)

256MB, 512MB, 1GB

256MB ~ 1GB

Bank 6, 7 (DIMM4)

256MB, 512MB, 1GB

256MB ~ 1GB

Total System Memory

256MB ~ 4GB

Table 2-2. Unbuffered DIMM Support For AMD 939-pin Processor

Data

Bus

DIMM1 DIMM2 DIMM3 DIMM4

Maximum

DRAM Speed

Single rank

N/A

Empty

N/A

DDR400

Double rank

N/A

Empty

N/A

DDR400

Empty N/A

Single

rank

N/A

DDR400

Empty N/A

Double

rank

N/A

DDR400

Single rank

N/A

Single rank

N/A

DDR400

Single rank

N/A

Double rank

N/A

DDR400

Double rank

N/A

Single rank

N/A

DDR400

64-bits

(Single

Channel)

Double rank

N/A

Double rank

N/A

DDR333

Single rank

Empty

DDR400

Double rank

Empty

DDR400

Empty

Single rank

DDR400

Empty

Double rank

DDR400

Single rank

DDR400

Single rank

Double rank

DDR400

Double rank

Single rank

DDR400

128-bits

(Dual

Channel)

Double rank

DDR333

User’s Manual