Dell R7910 Wks report less memory in Win 7 32bit OS

I have a concern / problem  with Dell RACK workstation R7610 and R7910. 

I am using the Windows 7 32bit OS on these system which are installed with 8GB physical memory.

Even if the system has 8GB system memory the Win 7 32bit OS will reports lesser than the 3GB (i.e.) 1.91Gb only.

I understand that 32bit OS can’t go beyond 4GB and at the max it may report 3.6GB but in these systems it is not even reporting 3GB which is really concerning a lot for them.

It looks Dell has published some sort of on these for T7610 notification  http://www.dell.com/support/article/us/en/19/SLN293968/en but I couldn’t find any such stuff for R7610 & R7910.

Is there anyway can we get these system reports 3GB memory on Win 7 32bit OS?

 B.Akbar