Ding ding ding!
That's why I supported AMD with their Mantle initiative and glad to see we are finally getting DX12 / Vulkan games. Will be a few years before the benefits are truly there with better designed engines but at least it's progressing! Its amazing how well consoles run compared to many PC ports. Its laughable we have some indie games that run so bad as well. I'm sorry but your 2d side scroller shouldn't be hammering a $400+ video card
"Overpowered and underutilized" has been my slightly depressing tech' mantra for at least a decade now.
I've spent some time with assembly and I wouldn't suggest people go that far, but there is just so much software ~out there~ which doesn't appear to have reached 'optimization' stage of development; Let alone have the 'optimization' stage as a priority.