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Treebeardz
09-23-2015, 06:20 PM
So I have my display connected with a minidisplay port to the displayport input however I cant seem to get 144hz or ULMB to work at all. The higest output I get is 120hz at 2560x1440 and I know the 870m has no support for G-Sync but it should be able to do both 144Hz and ULMB given the amount of bandwidth.

Corporal
09-23-2015, 06:47 PM
Your Displayport is directly connected to the Intel GPU. The Intel GPU likely doesn't support refresh rate higher than 120hz.
Your GTX 870m is not connected to the display or the ports, it only writes into the Intel GPU framebuffer when you're playing games. It's called Optimus.

toronto699
09-23-2015, 07:55 PM
Sell that optimus machine get a gamming laptop with out Optimus

Treebeardz
09-24-2015, 01:26 AM
Yea, in a few months I should be eligible for a extended warranty replacement, great part is this warranty gives full credit back when you meet the qualifications for an exchange. Planning on getting the G751JY or G751JT eventually. I know ULMB was possible with displayport out or at least possible with an Active minidisplayport to Dual Link DVI adapter. My new PG278Q however only has displayport in :/

Ill have to look up the specs but im really sure that 144hz is not hard to reach and the intel HD card should be able to output that for basic productivity things as well. Not convinced something else isn't going on or if this is a known issue.