MSI showed off three of its premium-segment socket LGA2066 motherboards, the X299 Gaming Pro Carbon, X299 Gaming M7, X299 SLI Plus, and X299 Tomahawk. All four boards are based on a common PCB, with subtle variations to the designs of the PCH/VRM heatsinks, I/O shroud, and PCB paintjobs, besides some included accessories. Kudos to MSI engineers for minimizing R&D costs, let's just hope that these boards are priced within 10 percent of each other.

The board draws power from 24-pin ATX, 8-pin EPS, and 4-pin ATX (on some of the higher-end models). A 9-phase VRM conditions power for the CPU. Eight DDR4 DIMM slots, and four PCI-Express 3.0 x16 slots are wired to the CPU. Three 32 Gb/s M.2 and one 32 Gb/s U.2 are common across all boards. Also common here is the Audio Boost IV onboard audio solution, with a 120 dBA SNR CODEC, audio-grade capacitors, and OPAMP. Some of the models feature just the one GbE interface driven by i219-V controller, some feature two; and some of the higher-end models such as the Gaming M7 and Gaming Pro Carbon even feature Killer 802.11ac+BT4.1 WLAN cards. The higher-end boards also feature a bigger spread of RGB LEDs. Pricing-wise, one can expect the X299 SLI Plus to be the cheapest, followed by the X299 Tomahawk, X299 Gaming Pro Carbon, and the X299 Gaming M7. We wonder why.