I'm looking at building a new PC, main use is coding/productivity in Linux. I switched to a 4k monitor for my main display a while ago, and would like to add a second 4k monitor.
The 4k monitor I already have will only do 4k over DisplayPort.
For the second 4k monitor (I haven't bought yet), most will do 4k @60Hz over DisplayPort, with many also supporting 4k @60Hz over HDMI 2.0
I'd prefer to use a Skylake processor's native graphics (mainly for good/stable Linux driver support, but also partly for lower power usage).
I'd prefer 4k at 60Hz, for the second monitor, so to drive both monitors I need a motherboard which has one of:
2x DisplayPort (one or both of which could be DisplayPort via Thunderbolt, or DisplayPort via USB-C (without Thunderbolt))
or:
1x DisplayPort (or via TB or USB as above) and 1x HDMI 2.0
or:
1x ThunderBolt 3 port (Intel Alpine Ridge equipped) with an external TB3 to dual DisplayPort adaptor like Startech's TB32DP2
Although all of the Skylake processors and chipsets are capable of three DisplayPort outputs, I've only found higher-end Z170+ ThunderBolt motherboards (e.g. Gigabyte GA-Z170X-UD5) which meet the spec I'm after.
Are there any cheaper boards which have two DisplayPort outputs, or one DisplayPort and one HDMI 2.0?
I don't think I can find a motherboard yet which ends up being cheaper than the minimum price Skylake boards plus a low-end AMD dual DisplayPort discrete graphics card...
Thanks!