When coupled with the Core i9-7900X, the new motherboards outperform the old X99 platform across 3DMark and PCMark just slightly. Although it's far less expensive, the Core i7-7800X can't stand up to the prowess of a 10-core CPU in 3DMark's Physics test.
Improved efficiency; Improved CPU Overclocking (clock) Stability; Advanced 802.11ad Wi-Fi; in addition to dual Gigabit Ethernet; Includes Thunderbolt 3 add-in card and four-fan extender card
Not designed for 3-way SLI on 28-lane CPUs; Mediocre memory overclocking; Improved efficiency comes at the cost of a minor performance deficit; Expensive