My HP a1483w:
AMD 64x2 2.2GHz
2.5GB RAM
250GB SATA(Windows XP & restore exclusively)
160GB IDE(Ubuntu 8.10(60GB) Win7(40GB) Empty(40GB). Rest is swap and such)
256MB Video card, dual monitor ports
CDRW/DVDRW Lightscribe
2 Firewire ports, 7 USB, Mem. card reader, assorted audio(including HD)
3.5 1.44MB floppy drive
I'm stunned as to how well my machine runs Windows 7 in comparison to Vista's performance with a previous machine. My last HP had a P4 2.8GHz, and otherwise similair specs, but with 3.5GB RAM. It ran horribly and was gone in a week. But really, this is fantastic. For once they've made a Windows that will run with all the bells and whistles on a machine thats already out there and not heavily upgraded. I upgraded mine to an additional 512MB RAM, a 160GB IDE HDD, the video card, and the floppy drive. I'd expect that Windows would run pretty well without those things. Better, as a matter of fact, if it were on the SATA drive, as disk performance would be a bit quicker.
Installation was a snap. I had to tell it not much more than my product key. It installed fully the rest of the way without a thing from me. I hated how the previous versions would stop dead in their tracks until I gave it input. I'd start installation and dissapear, expecting it to be done when I got back. But instead, it was 5 minutes through and wanted the time and date. This version installs completely, finds most of the information itself, and asks a few questions at the very end of installation. Bravo, Microsoft.
Of course, seems it was free, I've been installing all the newest stuff I never usually get. Like Live messenger, Silverlight, and the such. I usually use Trillian, but I don't think it'll work, as it doesn't have a Windows 7 version yet. Oh, and it recognized all my devices automatically, except my Logitech Webcam. Still toying with getting that to work, but the rest seems to be fine. Afterall, this machine is labelled Vista Capable, but came with Windows XP Media Center.
Windows 7 ranks up there NEAR Linux, at least until it costs $300 to install. I may buy Vista when Premium is only like $100-$150.
--Ryan
EDIT: Turns out Vista Premium is $130. Next plan: Get money, wait for Windows 7 to come out, buy Vista when price drops. Furthermore, Windows 7 download is the Ultimate edition. So if it comes out and you buy Basic, don't expect it to be as cool.