A bit of help at the low end

[Pyneappel]

I have a SuperMicro X9SCM server motherboard with a Xeon processor. The only video on the board is VGA upto 1280x1024, and no audio. The board's physical PCIe slots are x8. I'd like to add some slightly better video to this to at least be able to play Youtube clips and other multimedia files directly on the server rather than just over a NAS.
[minimum out] one HDMI monitor at 1366x768 playing audio over the HDMI
[better] support for extended display on two monitors at 1366x768 each, using DisplayPort 1.2 daisy-chaining, and audio over the DP.
OS is Win 7 64bit.

Any help would be appreciated, I'm having a bit of a hard time knowing how to search for this, as most of the low end is on-board Intel HD graphics and such. I also assume the x8 slot limits the type and capabilities of the card I can use.

 

[sidewinder1911]

Should check out this link for a sub 100 USD graphics card.
http://www.tomshardware.com/reviews/radeon-r7-240-and-250,3717.html

 

[k1114]

That article is quite outdated, 2 years, plus they are 16x gpus. The mobo seems to have it's own igpu and that is rather weak. You can search on newegg for x1 and x8 cards. You'd be fine with a 710 but the 5450 costs more if you really want dp. I couldn't find for sure if it's 1.2 for mst but it should be.
http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&IsNodeId=1&N=100007709%20600007854%20600528885

 

[Pyneappel]

You can search on newegg for x1 and x8 cards. You'd be fine with a 710 but the 5450 costs more if you really want dp.

OK, thank you for the direction k1114. I see on NewEgg now that I can search by slot type. Seems like none of the PCIe x8 cards have DP output, which is a bit strange to me since Wikipedia says the GeForce 700 series supports DP 1.2.