Help with purchasing a monition

Hi,

I was talking to a Apple Specialist today, and they said IPS display technology for the last generation Mac Pro is not compatible; is that true?

I found this display via Amazon that says "UltraSharp" does that mean IPS.

http://www.amazon.com/Dell-UltraSha...8&refRID=18B7M49Q216RYEXZNGA1#customerReviews

Then I found this display without "UltraSharp"

http://www.amazon.com/Dell-WHXV7-24..._sim_pc_2?ie=UTF8&refRID=000E81W5ZHD95XA45RV7

I'd like answers.