Now that I've had my XT in my Unibody MacBook for over a week, I must say I am very happy with this decision! My boot time is now just a tad over 20 seconds from the moment I push the power button till I'm at the desk top ready to go (was about 48 seconds before with the 5400 RPM 160GB stock drive). I too notice a huge improevement in opening common applications. Even opening seldom accessed files is noticably faster!
I would highly recommend this drive.
Yeah, that's been my experience exactly. With mine, I have a 17 second boot in Windows 7 from the time the OS starts loading until I'm at the desktop (so probably a longer than yours, because that's not counting the several seconds where the BIOS is going "hey, here's some drives!"
And then also once I'm at the desktop, I can actually start using it pretty much right away, whereas always before even after the minute or whatever to boot, you'd have to wait a while before the hard drive was done thrashing and Firefox or whatever was actually loaded and running.
I've got two things that load at startup-my mouse settings, and an IM client, and now they're sometimes both loaded BEFORE the screen fades in from the login screen!
And yeah, just loading everything seems faster.
4GB doesn't sound like much, but I guess how Seagate does it is it ignores large files...so it's only caching small files, and when you really look at most programs, they're not THAT big, and it's not having to cache all of them, just the parts that are actually frequently loaded. (Like I'm sure Office is gigantic, but not the part that actually gets loaded off disk.)
It's funny...when Vista came out what, four years ago? They made a big deal about hybrid drives, and about that "Readyboost" thing. Only Readyboost didn't seem to do anything, and I'm not sure anyone released hybrid drives.
Then YEARS after I'd just thought the idea was dead, Seagate releases these, and...they actually work!