3D transforms is nearly completely dependent on the GPU of your machine. about:gpu in Chrome will give you more information about the differences and capabilities of your machine. In some cases, old drivers are too unstable to support and so they're blacklisted by Chrome.
Gah this helped me a lot, thanks. about:gpu told me my WebGL was disabled in about:flags... which it was. Not sure how that happened as that's been annoying me forever.
hm, so you have to check the GPU via JS to check if the user can handle 3D transforms?
about:gpu is nice. thanks.
Chrome Version 21.0.1180.79 works for me.