my 256 mb ram shows up as 128 mb

[santokki]

RAM: 256 MB PC133 SDRAM (SimpleTech brand)
Motherboard: ABIT BX133-RAID

The RAM shows up as only 128 MB. The RAM is in fact a 256 MB stick.

This is a brand new stick of RAM and the package says 256 MB.
This stick has been tested on two other computers, both of which verify that the stick is 256 MB.

I tried clearing the CMOS. Still says 128 MB.
I reseated the RAM several times. After every time, the computer still sees only 128 MB.

 

[microAmp]

The chipset 440BX probably can't detect the double sided memory and is only seeing one side of the stick.

I had a similiar problem on a PNY memory stick only seeing half the RAM.

A BIOS update may fix that.

 

[Kingofcomputer]

Your 256MB is single side?
If yes, it's 8 x 256Mbit chips.
BX chipset only supports up to 128Mbit chips.