Hugo Ortega upgraded a Q1 with 2 Gb of RAM and here is what he says about how this helps performance:
The upgrade improves the following: boot up time, shut down time, program launch speeds, multitasking abilities, file transfer abilities...and so on. I am yet to tweak the machine but it definitely improves all of the above, and for me that's more than enough at this stage. You'll never make the Processor any faster but this RAM really helps.
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