I want to build a computer into a unusual case and need to know how tall mini itx boards are when installed. I need the height with all components installed to see if it can fit or not.
I want to build a computer into a unusual case and need to know how tall mini itx boards are when installed. I need the height with all components installed to see if it can fit or not.
That depends on the components - you can get low profile coolers and RAM, and if you aren't using a dedicated graphics card you could realistically get a full PC in a space less that 2 inches high - I have two ITX systems, one of which is about 1.8 inches high, the other is nearly 5 inches because I have a large cooler installed....
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if i wanted a dedicated graphics card you think it could fit under 3 inches
You'll have to use a low profile card or get a riser card for a full size GPU.
Here's an example of a low profile card: Low profile!
Here's an example of a riser card: riser card
The issue with riser cards is that they will often put your card over other components, especially in mini-itx situations, so you have to plan much more carefully. But in either case you should be able to get it in under three inches.
^Unless you're going for slim, but wide. Probably not, but at least that way, you're not blocking airflow as bad.