2.2.4 Installing System Memory
The maximum system memory supported
by the P6F94 is 256MB. If more than
256MB memory are populated on the
P6F94 mainboard, the portion of the
memory which exceed the 256MB
boundary will be invalidated.
The P6F94 Mainboard has two DIMM Sock-
ets. Memory can be installed by using 168-
pin SDRAM DIMM or EDO DIMM mem-
ory modules. There are no jumper settings
required for the memory size or type, which
is automatically detected by the BIOS. Due
to the P6F94 Mainboard high speed design,
the memory modules for the P6F94 must
meet all of the following requirement:
When P6F94 equipped with Intel 82440LX chipset, it supports 64-bit or
72-bit (64-bit memory data plus 8-bit ECC) DRAM array. When P6F94
equipped with Intel 82440EX chipset, it only supports 64-bit DRAM
array. The ECC function is not supported by Intel 82440EX chipset.
DRAM
TYPE
EDO (Extended Data Output)
SDRAM (Synchronous DRAM)
Module Size
Single-Sided
Symmetric: 1Mx64, 4Mx64,
16Mx64
Asymmetric: 1Mx64, 2Mx64,
4Mx64, 8Mx64
Double-Sided
Symmetric: 2Mx64, 8Mx64
Asymmetric: 1Mx64, 2Mx64,
4Mx64, 8Mx64,
16Mx64
Single-sided
Asymmetric: 1Mx64, 2Mx64,
4Mx64, 8Mx64,
16Mx64,
Double-Sided
Asymmetric: 2Mx64, 4Mx64,
8Mx64, 16Mx64
Requirements DRAM Speed: 60ns or faster
RAS Access Time: 60ns or faster
CAS Access Time: 20ns or faster
3.3V unbuffered DIMM mod-
ule
Speed grade: 66.6 MHz or faster
CAS latency: 3 or faster
30 P6F94 User’s Manual
Chapter 2:Hardware Installation
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