Is It Worth It?
Okay, so the long and short of it is this: Swapping out that PS3 hard drive for one of Intel's X-25 solid-state drives won't do much to improve install times from game discs, but it will improve install times from downloaded games and most game startup and load times by anywhere from 2540%, depending on the situation.
That's a huge improvement, but is it worth it? This 80GB drive costs in the $660700 range, which is considerably more than the PS3 itself. Considering that the base PS3 model these days is the $400 unit that already has an 80GB hard drive, you're not even trading up to higher capacity unless you happened to buy an older 60GB unit or the bargain 40GB unit. And it's a downgrade if you got the 160GB Drake's Fortune bundle pack.
So no, clearly it doesn't really make economic sense to swap out the PS3's hard drive for a solid-state drive just yet. SSD prices have to plummet quite a bit before that happens. But we see people spend money to trick out their PS3s all the time, with laser etching and all sorts of crazy stuff. If you have money to burn, this is a neat way to spend it on something that will actually make one of the pain points of the PS3 a bit more tolerable. Besides, it's just cool.