We have a Dell server (R410) running vSphere ESXi that has the following memory installed:
8GB 1Rx4 PC3L - 12800R (total 48GB)
We purchased 4 more DIMMs, but when they arrived, it says: 8GB 2Rx4 PC3L - 12800R.
I installed the additional memory and everything seems to be working OK. Can you explain the difference between 1Rx4 and 2Rx4, and if the two can be installed on the same server?
Also, is there a performance degradation?