Dell U3223

Hello Dell SMEs, not sure if this is the right place to discuss my challenge.

Yes, I'm still using Dell Precision T7400 on Windows7 Ultimate SP1 with NVIDIA Quadro FX3700 on board. Recently purchased the Dell U3223QE Monitor and using DVI-I 24+5 Pin (Male) to HDMI (Female) Adapter + HDMI cable to Monitor HDMI port. I've managed to install U3223QE (HDMI) driver (not sure if displayed info is correct; after install it is saying that all is working correctly). So far highest 1920x1024 resolution is working under WDDM v1.1. However FX3700 spec's are suggesting:

Appreciate your response.

Thanks,
Gnit