In Lion, if you click "More Info" from the About This Mac box, you are brought to that screen. It's technically System Profiler, but it's a summary from which you can delve into the full specs. The picture of the Mac you have is displayed automatically on that summary page.
^ I'm also running slower DDR3 1067MHz in my MacBook Pro. I had it laying around so I figured I might as well try it and it's been working fine for over a month now with no issues.
Bought an intel iMac as soon as they became available after the keynote. It's been flawless all these years even through daily heavy use. I'll be getting a new iMac in the next few months...