Pros: ITX form factor x299 for my Corsair 380T itx case. Loads of features. 4 Ram slots!

Cons: VROC RAID intel Stupidity not really the OEMs fault more intels. Kinda slow bios but it's only 5-10 secs. SODIMM RAM but you get 4 slots on an ITX board so not much of a con.

Pros: -only ITX available on the x299 platform -built-in wifi -USB 3.1 Gen 2 ports -three M.2 slots -fantastic BIOS after updating to the newest -more ram configuration settings than I have seen on the highest end overclocking x299 boards -strong memory overclocking -strong CPU overclocking (w/ proper cooling) -4 dimm slots -RGB header -capable VRM (with the right cooling- more details in "other") -BIOS reset button on rear I/O - and it doubles as a power button if preferred -good placement of 24 pin connector and EPS connector

Cons: -poor VRM cooling -only uses so-dimm memory -internal USB header placement is not good- (this is my opinion- it might be perfectly fine for others) -does not work with der8auer direct die kit + Bitspower monoblock -wifi antenna is not magnetic

Overall Review: I would highly recommend this product to anyone looking to build a powerful small form factor system. With that being said, this is not for someone who isn't ready for a challenge, nor someone who is not open to liquid cooling. If you do not plan on getting the Bitspower monoblock and doing an open loop, you may as well be using a Xeon processor as your clock speeds will not maintain at all. The VRM is very capable of a nice overclock, but it needs the Bitspower block to achieve it. I was easily able to obtain 4.6GHz on the CPU as well as 3200MHz on the ram that was rated for 2800MHz. This board is not compatible with the der8auer direct die kit and the Bitspower block at the same time. I have seen people use the direct die kit without the monoblock and have success, but when I tried using the two together, the block does not contact the die. It is also worth noting that after reinstalling the regular socket retention mechanism, and then installing the monoblock again, I was having pressure issues in the socket not allowing the computer to boot at all. I don't know if this was my own doing or a quirk or this board and that monoblock, but it is something to watch out for. I was finally able to install the block with enough pressure for good cooling while also not having the non-boot issues. One last thing worth noting is that without the M.2 daughterboard slotted near the rear I/O, some of the USB ports on the back of the board do not function as their controller lies on that M.2 daughterboard. Some people have complained of USB not working at all, but this is likely because they thought they could remove the M.2 daughterboard since they were not planning on using it.

Pros: -Great range of power for the cpu. -lots of room for future parts as they become more cost effective -It fits in a case I can take anywhere

Cons: -Initial purchase of parts to get working can cost a lot -Really have to pay attention to cpu list that is compatible or you will end up buying the wrong ones and have to build a second pc because of it.

Overall Review: I received this MB on the day of it's release. I bought the case first then slowly bought the other parts as the price met my budget. So far I have no problems with it as long as you take the time to research when will work and what won't with it. I have a killer score on passmark and am really happy with it. Hopefully I can keep this little guy running strong for years and eventually water cool it.

Pros: - Tiny size. - Triple M.2 slots. 2 of them using CPU PCIE lanes. - VROC possible. - One and the only X299 ITX MB!

Cons: - Limited choices for cooling system if you put this MB into an SFF case. - The air flow for CPU is narrowed, because the 4 sides around CPU are blocked with memories and 2 vertical panels. - The front vertical panel (SATA and Front USB) stands too high. The chassis can't close when the front panel cable plugged in. - VROC is not stable, nearly no support.

Overall Review: Since the MB is the only ITX X299 in the world, you have to accept all the pros and cons. The biggest problem is the VROC(Virtual Raid On CPU). The MB manual says it's ok for the 3rd party M.2 drives to building RAID0 without VROC key. But intel says that you can just use a very limited 3rd party M.2 drives. Unfortunately, I bought 3 ADATA SX8200 which is not fully supported. The words "not fully" mean that I can setup a VROC RAID0 using my non-supported 2 ADATA M.2 drives in a running windows 10, but it can't be recognized by BIOS. So it can't be used as a booting drive. And also the performance is downgraded when you use this RAID0 as data drive. Another problem is the memory. It is SO-DIMM package. While there are deals of normal DIMM every day, SO-DIMM is always expensive than normal DIMM, and almost no deals. ------ Update 12/20/2018 I think I figured out why the VROC is "not fully" supported. It's because of the RSTe software running on windows and in UEFI firmware are in different version. 5.5.0.1367(latest) for windows and 5.5.0.1039 for UEFI firmware . The UEFI firmware one is outdated. Thus, VROC raid drive can not be recognized before windows booting up. I think this may be solved by next BIOS update embedding the latest RESTe UEFI driver.

Pros: 'the only pro this MB has is that it exists, in the fact it's the only M-itx x299 board out there.

Cons: I won't have enough space here so I will be brief. 3 M.2 slots with no Raid support, ( I don't count the Intel V junk) Why would anyone put 3 M.2 slots on and not have raid support? bios is so glitchy, half the time I would only get a 1/4 screen when entering the bios, it hangs up alot. needs about 30 updates before it will be good very slow to boot. compared to my z170 and Z270 boards, this one is about twice as slow. I have all the settings to tweak boot time and it doesn't matter, still way too slow. $400 cost, trust me, spend your money on either a z370 or Z270 board, this one isn't nearly worth it, it's not worth $200 let alone $400 Asrock tech support is non-existent . they have one number and you always have to leave a message. Worthless.

Overall Review: This review for ASRock review rebate program. And I don't think they will be happy about this. LOL. Wait for MSI to release an X299 board or pray to your deities that Asrock comes out with multiple bios updates to make this board usable. Did I mention you need So-Dimms for this. another huge expense if your upgrading and you don't have the ram on hand.

Pros: do not get to create raid two m2 evo 960-1tb slot m2.2- m2.3

Cons: does not work well with memory 3800 mhz produces an error

Pros: Doesn't matter, cons are a deal breaker.

Cons: Does not support RAID on the M.2 slots unless you have some sort of key which is not available. Now I have a machine with half the drive performance of the one I was replacing. Completely false advertising, very upsetting.