Im about to buy a new msi nvidia geforce gtx n750ti 2gb gddr5/ocv1 this is the exact GPU.
Now what im asking is will i be able to install it to my pc using a GPA350S psu?
While it doesn't seem to have a need for an external power connector, you will be still be underpowering the system. It will work, but you should replace the PSU, if you run any sort of game that pushes it, it will crash or worse.