2GB HyperX usefull for???

I can buy 2GB of Kingston HyperX (4 matched 512MB sticks) for a good price. I'm currently running 1GB Kingston ValueRAM at not too bad timings 2-3-3-6. The guy will only sell me all 4 sticks in one buy, and I (and SETI!) really like the fact that these can run at tighter timings, but what the hell is 2GB good for?! Maybe I'll sell 1GB of HyperX, and my current 1GB ValueRAM.

-edit- And what will the strain on my PSU do going from 1 to 2 GB?! I only have a 350W Fortron PFC PSU right now...

IT's usefull for anything that needs a lot of memory. Thinking of running a databae server? Creading a 1G ram drive so that some things load superfast? It will also probably draw twice the current of your current setup, but it shouldn't be too bad.