It is amazing how much slower it feels. It really is. CPU's not horrible, it's got 16GB of memory. So, say I click on the Firefox icon. On the SSD machine, I'm unlikely to notice a delay before Firefox is up and loading pages. On the old moving-parts machine, it takes long enough to notice and get annoyed. Booting takes roughly forever.
Yup. You've definitely hit two instances of when you are forced to use long-term storage: loading the operating system, and loading an application.
So, let me ask what I ask what I ask everybody who likes to perform those two operations over and over and over again: why do it? The last time I booted my machine was, lets see... three days ago. Had a problem with my UPS, so I had to unplug the computer. Booted it up after that, and left it running. I generally only turn off the machine when I have to update the operating system, or when I have a power outage, so I normally only reboot about once a month.
Let's see... Chrome has been running now for 72 hours, 49 minutes. Thunderbird also 72 hours. iTunes for 26 hours.
I just don't understand why everyone seems so fixated on starting up an app, running it for five or ten minutes, shutting it down, and then starting it up again a few minutes later. Leave your computer running, leave your apps up, and voila! The pain of startup time only occurs once in a blue moon.
Once things are up, there's not that much difference, but I would never try to use this for, say, a mail client that's going to have 50k+ messages in a message store. It would be unusable.
Let's see... My Thunderbird e-mail client currently has about 100000 messages indexed (going all the way back to 2001). Some of these are archived locally, some stored on my IMAP account. Thunderbird does a decent job of indexing, and does so in the background; I never notice it while I'm using it.
And keep in mind, even on machines with SSD, drive access is still the slowest part of most activities.
I gotta say, drive access is not a significant part of most of my activities. Once my browser is loaded, it doesn't need to access the drive. My e-mail client may occasionally access the drive, but generally does so in the background; I'm fetching most of my non-archived mail over the net from my IMAP account. iTunes does access the drive, but only to stream audio files, and an HD can do that without breaking a sweat. My IDE can consume a lot of RAM and a lot of CPU, but rarely is it bound up accessing the drives.
Let's see... I can't recall any games, even serious ones, that spend a lot of time accessing the drive after they have loaded. Watching movies is the same as playing audio, it's streaming media that even HDs can handle easily.
I think the only activities I've ever seen in common use that are seriously bound to the drives are database-oriented ones, such as accessing a very large collection of photos. Something too big to fit entirely into memory, yet not easily indexed. Something where you really do need quick access to random areas of storage. I just don't run into these situations all that frequently.
What involves "most activities" for you?