I could compile the drivers myself or use the experimental multilib overlay but I don't have the energy to mess with that just to get google earth working.
I think Nvidia NVS450 is a very good card. It also support many monitor. I think it will solve your problem.
Heh, great to see someone with the same questions as me. My new notebook has a Nvidia GPU, and multimonitor is... Crap crap crap crap. And noveau is too unstable and lacks powermanagement, so not usable at all.
Most Radeon 5450s I have seen supports 3 outputs, although you would have to buy a displayport to vga adaptor, but they are becoming common enough now :-)
Maybe a simple enough request could be to ask the gentoo maintainer of the x86-emul package to provide an updated build, because of your reasons, which is entirely valid, I think?
I just checked, there are 20110722 versions of the emul packages. unmask and test I guess?
Multimonitor is very hard to setup on nvidia cards using the proprietary driver, and you can only use 2 screens at the same time on nvidia.
The GeForce 8400M GS works with the newest proprietary driver which fixes some bugs, and dual-head in TwinView (not tried Xinerama) works fast. Nouveau also works fine within its limits (if you use KDE + Nouveau 3D you may want the latest Git as that fixes an important bug). Even 2nd screen setup and autodetect (which the Linux blob lacks) work fine. My card is built-in in my laptop, but there are desktop cards named 8300, 8400 and 8500 based on the same NV86 chip.