You aren't likely to find a GPU that will stress that for e100. Just get the best one you can find using the GPU Hierarchy chart.
That should support 3 channel RAM. So if you don't have it already 3x4GB DDR3 1333 should work with a GTX1060 6GB. I would spend a little more to get one if you have to. But you may find something older that performs better if you shop hard enough. But it may require a PSU upgrade to run it, so consider that also.
https://www.tomshardware.com/reviews/gpu-hierarchy,4388.html
The older cards are further down the page.