Pros: This was the first board with a good VRM and heatsink on X299 platform. I've never had a single issue with either of my two boards and both overclock extremely well with KBL-X and SKL-X.

Cons: M.2 ports are both through the PCH which is great for KBL-X but terrible for SKL-X. Second BIOS requires jumper instead of switch like other brands.

Overall Review: Best board you can get with ATX form factor for X299.

Pros: 100% stable running Intel i9 9980xe with zero , 0 , nada problems and 64GB DDR4 ram 3600Mhz butter smooth. Well designed and proper heatsinks on this mobo it runs cool. Lots of features , excellent efficiency , awesome sound and Intel Nic , many pci express to suit anyone needs , 4 way sli or 4x crossfire x no problems. Great software support. Awesome customer support. Highly recommended !

Cons: None.

Overall Review: Do yourself a favor and buy this motherboard instead of spending lots and lots of money on other brands.

Pros: Has fancy LED lights and switches

Cons: 1. One of the PCI-E ports wasn't working when I got my first one. The second one was had a functional PCI-E with the same HW config
2. On both MoBos the USB 3.1 port doesn't work no matter what BIOS version I use, or tweak with the BIOS and windows USB settings and drivers
3. Had a nightmare setting up the m.2 SSDs. Can't recognise them everytime I change windows. My reboot button is worn out

Overall Review: I'd return it if it wasn't past the return windows and if I hadn't waisted so much time on setting up the build. There are much cheaper MoBos out there with the same functionality. Had an old Asus never had any issues with it. Stick to Gigabyte or Asus and save yourselves a world of trouble.

Pros: Easy setup, nice overclocking capabilities, multiple pcie lanes are very nice, doesn't look too flashy either

Cons: none so far

Pros: The thing that makes this motherboard different from all other X299 is that you can run five PCI-E slots at X8 plus the X4 slot plus the X1 slot concurrently (if you have a 44-lane i9 CPU). As of April 2018 this seems to be unique to this motherboard. I do not need x16 GPU support so this ideal for me. Second thing that is somewhat unique: In addition to all 7 PCI-E slots running at that bandwidth, you can also use all 8 SATA connectors plus two M.2 NVMe disks concurrently. Some motherboards share lanes between SATA, M.2, and PCIE but this one does not. Make sure your M.2 is NVMe not SATA (why wouldn't you...). Ubuntu Linux Server 18.04 seems to have discovered all of my devices as expected.

Cons: 1) It only has four DDR4 RAM slots, other X299 have 8, so max RAM is 64GB. 2) I think the RGB stuff is dumb. 3) There is only one USB 3.1 Gen 1 header on the motherboard and most PC cases expect two. This motherboard offers a USB-C header which might be great in the future but currently I cannot find a cable to match the header. 4) Took me forever to figure out how to set the clock in the BIOS - hint: not available AFAIK from "advanced mode". 5) BIOS is constantly shuffling my carefully-chosen boot order based on devices it finds. I know that's a Feature but I wish I could lock it down.

Overall Review: I paired this with qty (2) N82E16820215181 from the QVL which worked great. [ADATA XPG GAMMIX D10 32GB (2 x 16GB) 288-Pin DDR4 SDRAM DDR4 3000 (PC4 24000) Desktop Memory Model AX4U3000316G16-DBG)]. Also I bought two of the 2018 WD Black 3D NVMe M.2 cards which seem to be compatible.

Pros: -High end quality components
-Large VRM heatsink
-Best bios layout in the industry
-Has "retry" button which previous generation OCF boards don't

Cons: None really, see other thoughts

Overall Review: I use this board for its specific intended purpose of achieving the highest possible overclocks. Handles 4c to 18c and everything in between with ease. Memory OC is great 4133+ 12-11-11-28 is possible with kaby-x cpu.

My only minor complaint would be it doesn't have dual 8pin cpu power. However this really is a non issue as I pushed 7980xe to 5.6g+ on ln2 pulling over 1000w load and the 8+4pin had no issues at all.

Pros: Best board for x299 overclocking. Every single world record is done in this motherboard. Cost is amazingly low.

Cons: Nothing at all

Pros: I ordered this motherboard with an i9 7940x and I could not be more happy. I am running 32GB B-DIE memory and it does 3600 12-11-11 quad channel easily using the profile that comes with the bios. The power distribution and VRM efficiency is better than everything out there, including Asus (which run hotter and less efficient). Its also very feature rich, I have all the connectors, ports, and new MB technology I could dream of.

Cons: NONE!

Overall Review: I have the highest respect for ASRock motherboards. Its obvious that they spend a lot of time producing excellent hardware and making BIOS's that get the job done. If you are an overclocker, gamer, or even just desktop user this MB has something for everyone.