We need dxdiag and files from this folder for solve your problem. C:\Users\<Name>\AppData\Local\Arma 3\
Can you upload somewhere in winrar package please?
When package will be smaller than 2,097k, so you can attach here. When package will be bigger, please use some free sharing service and post link here. Thank you.

http://feedback.arma3.com/how-to-user.html.html

Having the same problem on certain(quite a few) missions on a similar computer build.
Linked are two crash logs/reports from a mission arma crashes on, dxdiag.txt, and the relevant mission pbo.
http://www.mediafire.com/download/guh4r9fmv8b4w32/Arma%203.rar

Can you try to reinstall graphic drivers to beta in "clean" checked (don't uncheck programs after like physx...)? In geforce experience :). Saved me many times from arma 3 crashes :)
Also check files on steam, look on google if that don't fixed it.

http://feedback.arma3.com/view.php?id=9347
ok... my old post [still as "new"]
I had it and fixed.

Fixed - ArmA 3 don't work with gamerOSD. Close all addons [fps and others] from gamerOSD in another game.
Will work for you?