3840x2160 Monitor On a MacPro

I have a Mid 2012 MacPro running 10.10.5, with 2x3.06 6-core processors, 64GB Ram and an ATI Radeon HD 5870 1024MB graphics card. I have two 1920 x 1080 displays with the left in Portrait mode for Events and the right one in Landscape mode for timeline, effects, inspector, etc.

For my client monitor I have a consumer LCD TV recieving it's signal via HDMI from an AJA Kona LHi card.

I would like to upgrade the landscape display to a 3840x2160.

Are there any concerns with this setup driving the 3840x2160 and the 1920x1080 displays?

Thanks

Bill Buchanan

Will the HD 5870 support the 4K resolution and refresh rate you want?

So, I determined that my current Graphics card, a Radeon HD 5870 will NOT support 3840x2160 monitors.

However a Sapphire HD7950 Mac Edition will.

I will replace the old card with the new card next month and then upgrade the monitors shortly thereafter. One thing at a time

Thanks for the input.