Blue Iris with console closed and an NVR?

I'm looking for a way to monitor my cameras in real time with no delay at my office but also record.

Is the best way to do this to get an NVR for real time monitoring and Blue Iris on a server to record? Keep in mind I have (2) 4K Cameras and (2) 4MP cameras. I want to view and record at max resolution (I know people will call it overkill).

I'm going to be using a pretty powerful server I took out of commission from another use. I'm thinking I may need to add a GPU as the on board GPU is built for basic server console use?

(2) Xeon E5-2670 @ 2.6 Ghz 16 Cores total
128 GB Memory
(2) DS-2CD2T85G1-I5 4MM 8MP
(2) 2CD2042WD-I 4MP

Let me know your thoughts. Thanks

i don't see why you'd need both. Why not use BI's console to monitor?

As mentioned you can monitor on the bi console... Adding a graphics card will further bring up the high power consumption of your system...depending on how much you actually uses you might be better off replacing it in general...
Also your premise is flawed, the NVR displays the camera sub stream in matrix view. Blie Iris will display the mainstream.

I was seeing lag in monitoring with one camera hooked up to BI. This was running Server 2008 R2 in a VM running on ESXI. I'm installing Server 2012 on bare metal now and will see if it improves.

try a more modern cpu. even a Gen4 i5 with intel HW decoding will work better with BI than that Xeon...

I have some i5s and i7s lying around. I'll give them a try if this one fails me.