Holy jeepers...
Did you intentionally buy 2x 6500XT for crossfire?
Why? Why would anyone do that?
Even at the times when SLI/CF were prominent it was common sense to get a higher-ranking GPU, and only when a single high-end along the lines of 8800GTX, GTX280, Titan, HD5870, HD7970 weren't enough would one go for MGPU. You just got yourself a heap of trouble for your own hard-earned money, dude.
- Since both cards are only at 4x bandwidth, PCI-E 4.0 would be better to have, but it's not a requirement.
- IDK about task manager, but Afterburner used to show me GPU1 and GPU2 when I used to run 2x Titan SLI.
- It must kick in automatically when the game supports it and it's enabled in driver. E.g. in the Evil Within (screenshot above) MGPU is not supported, so GPU2 stays at 1-4% load.
- I've no idea if there's dedicated CF configuration software.