Q-DIMM Is A Go
One of those aforementioned features was Q-DIMM--now present on the P7P55D Deluxe. As you can see from the picture, memory modules clip in on one side of the slot and are simply held in place on the other. This way, installed graphics cards don't interfere with memory upgrades.
As mentioned in the P7P55D EVO first-look, other vendors have avoided this inconvenience by putting enough space between the first PCI Express x16 slot and the memory slots. However, Q-DIMM makes this placement consideration a non-issue.
Also visible to the right of the slots are BIOS toggle switches, which unlock more extreme voltage settings for the CPU, integrated memory controller, and DIMMs.