Pros: Works on my Asus X99 WS N with Xeon E3 1650 v3.

Cons: Doesn't look to be overclockable.

Pros: Looks solid. Great UEFI BIOS. No fan.

Cons: Don't expect to install a ton of hardware on it. It has only 2x PCIex16 and the last one is a PCIex8. There is also a lot of rules on how the PCIe lanes are used by the board that are not obvious.

Overall Review: You have to upgrade the BIOS. The factory one has some incompatibility issues with my GTX970. I was unable to install the driver first but this was fixed with a BIOS update.

Pros: Works great. Silent.

Cons: Big. It will take 2 and an half slots because of the size of the fans. I had to put it in the last PCIx8 slot for this reason. (This works and doesn't really affect performance).

Overall Review: Looks solid and well constructed.

Pros: This is really some quality hardware. It feels solid and it is really easy to install. The fans are almost silent (I can't ear them).

Cons: It's ENORMOUS! It takes far too much space. I can't use my first PCIe x16 on my ASUS X99 WS. Once in the case, accessing the top of the board is really hard. You also need to be careful of the dimension of the memory SIMM modules.

Overall Review: I will have to replace it if I need to add anything in my PC as it limits my options.