IWILL P55XB2, Manual, Page: 31 / 91

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PCI
JP3
The Pentium with MMX , AMD K6 and Cyrix M2 is a dual voltage CPU. one
volatge for CPU Core (Vcore), another for CPU input/output single (Vio). The
JP3 pin1 is connected to the CPU Vcore and pin2 is connected to the CPU Vio.
The motherboard auto voltage function should work with most Processor. In
case of the motherboard auto voltage function doesn‘t work correctly with
your CPU or futher CPU. You can use voltage meter to check the Vcore and
Vio.
(If the voltage desn’t match with the CPU spec. You have to change the JP4
jumper cap manually)
. In few special processor (single voltage CPU) which has
two Power Panel (Vcore/Vio) separately , this jumper also can be shorted to
connect Vcore and Vio by a jumper cap.
2.4 L2 Cache Memory
The cache memory support pipilined burst SRAM, this will perform much higher
perfomrance compare to the traditional asynchronous SRAM. This motherboard
uses the new pipelined burst cache technology with 512K size.
2.5 D-RAM Configuration
This motherboard provides six memory socket. For at least two pieces 72 pin
SIMM(Single In-line Memory Module) or one piece 168 pin DIMM (Dual In-
line Memory Module)must inserted in this 64 bit Pentium base motherboard.
1.
Two DIMM (DIMM 0, DIMM 1) socket—support 3.3V Unbuffered
Synchronous DRAM (SDRAM).
Each DIMM memory size can be 8/16/32/64/128 MByte. The maximum
memory is 256 MByte that is the Intel 82430TX chipset maximum
support.