Can You Add More RAM to Dell Precision 3930 Rack Workstation?

Yes, you can. All Dell Precision 3930 Rack Workstation models come with four RAM slots that can be upgraded if you're not already maxed out. Here are the memory information and configurations available for Dell Precision 3930 Rack Workstation:

• Memory Slots: 4 x DIMM slots
• Memory Type: ECC and Non-ECC Dual-Channel DDR4 Memory.
  ECC memory is only supported with Xeon E
  Processor and Core i3 Processor SKUs.
• Memory Speed: 
  2666 MHz
• Memory Size per Slot: 
  4GB 8GB 16GB 32GB

Here is the Dell Precision 3930 Rack Workstation mainboard: