Re: Give me a PCIe card
Try looking at the Samsung SM951. It's not quite up to the same performance as the Intel 750, as it's an ACHI device (With promises of an NVMe in the pipeline), but it's still bloody fast. 512GB capacity, and a whole lot cheaper than the HyperX or 750.
If you wait a few months you might be able to get the promised NVMe version of the SM951.