Hardware Installation
2-19
Caution: Some SDRAMs marked as -10 may
work fine with 100 MHz CPU clock, but not all
this kind of modules can work properly under
100MHz external clock. We suggest you
choose and install SDRAMs that match PC 100
specification if 100MHz or above CPU clock is
selected.
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 recommend 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 AX6BC, we strongly recommend you to choose 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) and
72-bit wide (with 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.
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