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M440LX Server System Product Guide
157
System Board Resources
Video Memory DRAM
The system board comes with 512 KB of onboard video memory. Increasing
the video memory buffer size to 1 MB with a 40-pin 256 K x 16, 60 ns
fast-page DRAM allows the controller to support 132-column text modes
and high resolution graphics with 1280 x 1024 x 16 colors. Depending on
the environment, the controller displays up to 64,000 colors in some video
resolutions.
✏
Note
DRAMs from only certain manufacturers have been tested
for compatibility with the system. Contact your dealer or
sales representative for a list of approved manufacturers
and their devices.
Installing the Video Memory DRAM
1. Observe the warnings and cautions on page 3, “Safety Guidelines.”
2. Remove the left side cover as described in Chapter 4, "Working Inside
Your System."
3. Remove the 256 K x 16, 60 ns DRAM from its protective package, and
align the dot on the DRAM with the beveled end of socket U25
(Figure 6-5) on the system board.
4. Press the DRAM down firmly until it is fully seated in the socket.
5. Replace the left side cover as described in Chapter 4, "Working Inside
Your System."
Removing the Video Memory DRAM
1. Observe the warnings and cautions on page 3, “Safety Guidelines.”
2. Remove the left side cover as described in Chapter 4, "Working Inside
Your System."
3. Using an IC removal tool, remove the video memory DRAM from
socket U7C1 (Figure 6-5) on the system board, place it on a conductive
foam pad, and store it in an antistatic protective package.
4. Replace the left side cover as described in Chapter 4, "Working Inside
Your System."