I have two identical servers, with the same spec except processor speed and amount of RAM.
Everything else is the same.
One is running SBS 2003 (and therefore 32-bit)
The other is runniny W2k3 Enterprise 64-bit
the first displays happily at 1600x1200 on my monitor.
the second does not. I can select 1600x1200 only by using "List all modes" and then it actually displays at something lower (I think 1280x1024) and pans around the logical desktop when the mouse pointer reaches an edge.
Both servers have the same (RADEON 7000) video card and both use MS drivers - no fancy ATI drivers here thank you.
The 64-bit one is of course a different version number (they match what I've read should be the MS drivers for XP32 and XP64 as you would expect.)
So why does the 64-bit machine scroll around the desktop?
To add insult to injury, yesterday the second machine was displaying proper 1600x1200 without scrolling - it just stopped doing it after a reboot today!