When I first tried installing Windows Vista I used a Thinkpad T41. The results were very poor. Whist the operating system did install it was pretty much incapable of doing anything useful. I quickly reverted to using Windows XP again. With the launch of the Windows 7 Beta1 I thought I would try the same test again. And I am very encouraged by the results. It is clearly a step up from Vista both in terms of stability and performance.
From downloading the code (over 2GB) to burning it onto a DVD to installing it onto my venerable Thinkpad only took a few short hours. Within a couple of reboots it was recognising my Wireless Lan, Graphics Card and the other computers on my network. Impressive although nothing you wouldn't expect from a Mac or Ubuntu.
But the big question is does Lotus Software work on it? The answer is a resounding yes. The first thing I installed was Lotus Mobile Connect to get VPN access to IBM's internal systems. Then of course it was Lotus Notes. It installed a treat and after I copied my bookmarks, workspace (OK I'm occasionally old school) and ID file it was like working on my main PC. As you can see, Lotus Sametime also works brilliantly as well.
I also checked out the Lotus Symphony editors and they all worked faultlessly.
All in all you would have to conclude that Windows 7 is a massive improvement on Vista. I happen to know that IBM Lotus Quality Engineering always test out latest software on older hardware. Specifically, they have used a Thinkpad T30 which is over 5 years old to ensure that performance would be fine. Despite a slow start with Notes 8.0 the performance optimisation in 8.0.2 and 8.5 is really impressive.
So in conclusion, Lotus Notes 8.5, Sametime, Symphony, Quickr and Portal all work fine on Windows 7 Beta 1 on a three year old computer. But beware if you want to edit a picture, watch a video or play a simple card game!
Update: The first version of Lotus Notes that officially supports Windows 7 is release 8.5.1 Fixpack 1. See Here