Pros: Super quiet, easy to install, CPU temperatures cooler than with an AIO.

Cons: Slighty more difficult to install compared to an all-in-one system. Have to get the tubing right so it doesn't kink.

Overall Review: First time building with water cooling. Used All-in-ones before and this is a much better product than the Corsair AIO's I've used before. Much cooler CPU temperatures than with previous AIOs I've used also, especially since my CPU is the new I-9, which others are complaining about how hot it gets. No problem with this system!

Pros: More bells and whistles than I need. Nice looking board for those that are into a glamor computer. Plenty of USB 3.0 ports.

Cons: Maybe I got a lemon, but third version of BIOS (904) is still not stable on my board. Runs OK (except high fan speeds) at optimized defaults, but won't post with any changes to BIOS. Neither XMP profile will post using qualified Corsair memory. Won't post using listed memory speed (2800 MHz at CAS 16) and defaults to 2133 CAS 15. Slight overclock to 3.9 MHz fails. Can change fan speeds in BIOS, but doesn't physically change fan speeds, which are running way too high (39 degree temps and 60% throttle continuously).

Overall Review: I assume future BIOS updates will take care of this problem, so am not returning, but disappointed that I paid $400 to be a Beta tester.

Pros: Nice RGB lighting, but....

Cons: Wouldn't post ("4F" Q-code) with Intel core i7-7820X (8-core) processor. Defective board or Beta BIOS release. Unable to reflash BIOS.

Overall Review: ASUS support response was that only 4 and 6 core processors are officially supported (QVL) at this time. I have RMA'd board, but don't know what good it will do if can't use the processor that they advertise it will work with (but not in the "small print" QVL list).

Pros: Compact and X99 chipset

Cons: M.2 slot only provides 2 lanes of PCIe bandwidth (old school) and you don't get full speed from the latest M.2 SSDs. Not compatible with Samsung 950 Pro M.2 SSD - even with 3.0x4 adapter in PCIe port. Corsair memory also could not achieve XMP frequencies on this board.

Overall Review: Samsung 950 Pro M.2 SSD runs at reduced speed in M.2 slot and with PCIe 3.0x4 lane adapter. NVMe controller doesn't show up in the BIOS (section remains grayed out). According to Asus support, this motherboard is not compatible with the Samsung 950 Pro or the latest Corsair DDR4 memory and they refused to provide any support.

Pros: Comes with decorative fans. Low CAS and high frequency memory.

Cons: System was unstable at XMP setting. Could only achieve 15 CAS and 2400 MHz on new ASUS X-99 board (which is worse than the 2400 MHz sticks I already had).

Overall Review: I was waiting for other parts to arrive to complete the build, so by the time I got them installed and tested, it was past the return period.

Pros: Very quiet fans.

Cons: Difficult to pull the rubber grommets through the fastener holes, particular in tight confines.

Overall Review: Very nice fans once installed.

Works as advertised. Received package in a timely manner. No complaints.