I am looking to build my first PC, but am running into some issues with my current system. I think my GPU may be the cause and am wondering if I can upgrade it now, and then build the rest later. But, I'm afraid that my Dell PSU may not be "big" enough to handle a higher GPU (you know how pre-fabs don't leave my room for upgrade). I'd prefer to not make my new build now (financial woes), but I also don't want to get a smaller upgrade to fix my current problem.
My current PSU is:
Dell model # L375P-00, 375W output
Ignoring all other considerations (which I know is hard to do)...what is the best ("biggest") GPU that I can get that will run with my current PSU?