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Question: What are the dimensions of the H81? I have checked the manuals online, and there aren't any measurements at all.
Document: Fantastic motherboard. Does what it needs to do and that is to mine. I suggest you pick this up at a near microcenter with a cheap intel processor for roughly the same price you would pay here on amazon. This board is much cheaper in other online stores like microcenter.The board is a bit weaker in the middle, I don't know it just feels that way to me. But once it's installed it's rock solid, so I'm not too concerned over it.
FYI:  This board sells for $69 new from Amazon and NewEgg and other online sellers. If you see it for twice that price or more, these are scalpers trying to make money off YOU. They buy them up, double the price and re-list when out of stock. If you are patient and check daily, they DO come back in stock at normal price ($69). Then you wont be feeding the scalpers.That being said, its an awesome board.
Easy to setup and all the things a miner needs. And I paid $69. You should too!
Great board! I was finally able to get my fifth card working on this board.
I used this board with Linux and it recognized all the PCI-E slots right away. Setup was a breeze. Must have for cryptocurrency mining setups.
There are a lot of mixed opinions about this board for mining, but so far I have found it to work excellent for mining. Plan on buying several more once the prices return to normal.
I couldnt get more than 3 cards to be recognized on Windows 8.1, ports dont work.I have 5 PNY 750Tis and this board is a waste of money.
This one worked. After trying 3 other brands, I can say for certain this is the one you want. I'll have you know I am making $6.00/day mining alts thanks to this.
Yes it will work and mine, even thought difficulty is going through the roof but it will get the job done. The one I received had some pins on the CPU bent but that was an issue that happens once in a blue moon so don't let that turn you off to this MB.
I have built quite a few mining rigs now with this board. They all perform extremely well and can take six video cards with ease. I did have one board that had problems out of the box, but this happens with all brands I use from time to time. This is a solid performer.
Answer: Dear Customer,30,5 cm x 17,8 cm... you can check also in the product details of amazon.com