Re: soon to be upgraded comp.
I would take a different brand over Corsair, because those timings are pretty bad for 512MB sticks.
Also, you are getting 4x512MB sticks? That increases the command rate from 1T to 2T usually. It would be better to get 2x1GB sticks, or if you can't afford it, just spend the extra 100 dollars on a better graphics card.
Athlon FX-55 San Diego 2.6GhZ OCed to 3.0GhZ | Mushkin Redline XP 2x1GB PC4000 DDR500 3-3-2-8 OCed to 250MhZ | Seagate Barracuda SATA 400GB 7200RPM HDD | evGA GeForce 6800GT 350/1000 OCed to 425/1150