It is a big difference. Everything feels to load three times faster and is responsive instantly. Windows (no Linux :( since it's a gaming-machine) boots in 50 seconds including all stuff loaded in the background/to the tray (anti-virus, hardware-tools, styler, etc.)
I did some basic measurement that shows the subjective improvement is much bigger than the real-world numbers:
- Game save state loading times are "only" reduced by 50-100%
- Windows boot is "only" 70% faster
- But Firefoxs (16 Tabs) really starts three times faster, and is responsive after less than 10 seconds. This did take 30 seconds before!
If you plan to upgrade your PC someday, don't forget to add an SSD, it's worth every Cent.
Ahh, what you actually might want to know is, which SSD I bought:
Its an 80GB Intel X25-M G2 Postville 2,5" SATA II drive that I bought for 185€.