Hello thanks for choosing Dell.I checked internally and The CPU you wish to use is a E2278G 8 core -> you need a 450W. Hope this helps and wish you a good one.
  Hello all, I have a PowerEdge R240 server with G4900 processor and 250W Bronze PSU initially installed. Recently I installed E2278G processor, but when i turned it on, only power and fans are running, makes no booting up. And when I check iDRAC Web UI, it keeps displaying it as G4900 only. Will it be because I need 450W Platinum PSU for  E2278G processor? Or I need specific configuration for it? If you don't mind, please take a look at my iDRAC screenshots below for details. Thank you for all your valueable helps ahead! [IMAGE]   [IMAGE]
Question about R240 new processor