Themes can cause this. As the theme may not be made specifically for this version. It could be a theme made for an older version which is now causing these issues.
If you leave everything at default do you still get the crashes?
I will say that while i do know that the theme aspect is pretty well carried over, i can also say that not all themes work with the newer version of Chrome when they were made for the first few generations. I have had more than my fair share of Chrome themes cause nothing but havoc on my system.
If you still get crashes with Chrome, i would contact
Google. They will be the only ones that can even begin to understand why only Chrome has such issues on your system. I am running Win7 64 Bit myself. So it isnt the OS.