If you ever touch your swapfile, you simply aren't running enough physical RAM to begin with. Just get more RAM if your computer is hitting its swapfile often, it's not like 1GB sticks are even all that expensive anymore.
That said, this sounds tempting to use as a Adobe scratch disk, though, or a DV source or output directory (provided you remember to move the files over to a hard drive after you're done editing). I'm almost tempted to buy a couple extra gigs of DDR memory while it is super cheap now (although I'm still a bit unsure if "only up to DDR200 support" means you have to find the old PC1600 DDR or if they mean 200MHz DDR a.k.a PC3200). I'm also curious to see if this card only works on Gigabyte motherboards like their dual chip SLI card, or if you can use it on most mobos. Either way, it sounds yummy.