Hello Madmatt30,
Interesting point and you may be on to something. Here's what i just found out:
Benchmarking both cards individually on Unigine Valley results in almost exacly the same scores:
test 1:
GPU 1 (x16) = score: 2478, average FPS 59,2, max FPS 113
test 2:
GPU 2 (x4) = score...