I am considering a similar build for heavy Photoshop and Lightroom use. Currently on and older i7-1358 pin 3.0Ghz XEON cpu, I'm considering either a new i7-4930 or dual Xeons as you are. The reason for the Xeons is ability to use ECC memory and add more cores. This is a production system in daily use so I'd probably not be overclocking.
Interested in your and others views on this. Previous to my current system, I'v always had dual socket Pentiums, Athalons or Opterons, someof which are still in service but in a reduced roll.
I typically use fast drives, some SAS, 15K & 10K (SSDs now where it makes sense) and RAID where necessary, especially for SWAP drives in Photoshop along with lots of memory..
Thanks for any input here. Basically ECC vs non ECC (I know there is a speed hit with ECC, but really - how much?). Overclock (i7-4930) or non overclocking (Xeons)
I should also mention, Culch, that I am considering the same CPUs and MB as you.
Thanks for reading.
A Dual Xeon would be far excessive for Photoshop and Lightroom work. Such a system would sit 90+% idle most of the time. A Single CPU system would be ideal.
Thank you very much for that link! I missed that during my research.