Nvidia Quadro FX 3800M (M is key) vs 3800 vs certified driver?

I am thinking about a dell M6500 as a win7-64bit solidworks machine.   Graphics card offered is FX 3800M.

SW certified graphics drivers list includes the FX 3800, but no 3800M.

1. Is the difference important?  How would one find out?

2. Any way to find out when the cert tests are to be run/updated for the 3800M?

Any experience/advice regarding this machine, card, driver, etc. welcome.

SolidworksAdministration