User Guide

Hardware Installation
2-18
III. Buffered and non-buffered: This motherboard supports non-buffered
DIMMs. You can identify non-buffered DIMMs and buffered DIMMs
according to the position of the notch, following figure is for your reference:
buffered
non-buffered
Reserved
Because the positions are different, only non-buffered DIMMs can be
inserted into the DIMM sockets on this motherboard. Although most of
DIMMs on current market are non-buffered, we still suggest you to ask your
dealer for the correct type.
IV. 2-clock and 4-clock signals: Although both of 2-clock and 4-clock signals
are supported by this motherboard, we strongly recommend choosing 4-
clock SDRAM in consideration of reliability.
Tip: To identify 2-clock and 4-clock SDRAM, you
may check if there are traces connected to
golden finger pin 79 and pin 163 of the SDRAM. If
there are traces, the SDRAM is probably 4-clock;
Otherwise, it is 2-clock.
V. Parity: This motherboard supports standard 64 bit wide (without parity)
DIMM modules.
VI. SPD support: BIOS will automatically detect DIMM with SPD, and set to
appropriate timing. DIMMs without SPD are still able to work fine on this
board, but BIOS POST screen will give you a warning message that you
use a DIMM without SPD.
There is no jumper setting required for the memory size or type. It is
automatically detected by the system BIOS, and the total memory size is to
add them together. The maximum is 256MB.
Total Memory Size = Size of DIMM1 + Size of DIMM2