I have two computers that I want to increase the ram speed.

These are custom built:  One with Combo Biostar 1750 motherboard and 512 MB DDR PC3200-400 ram and the other is AMD 2200+M7VIG Processor and 256 MB DDR PC2700 Ram.

What chips I need for each or both to increase the speed or should I replace motherboards and memory?

Thanks,

Veronica

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