Hello
A relative has a Sony PCG-GRV516G laptop.

This laptop is based on Intel Brookdale i845MZ (which support 1 GB of 
memory) and CPU is Intel Pentium 4

When the computer was made (3 year ago), Sony said maximum memory was 512 
MB. All other laptop at the same tyme supported 1 GB.

There is 2 DDR sodimm support. Actually both contain 256 MB DDR PC2100 
module

Do you known why this laptop cannot support 512 MB module ?
Do you think this is only "paper" limitation and I can try a 512 MB module?