I have an old rack server in my house (similar series, dual Xeon 6-core, now with 128gb of ECC ram)
Since I bought the ram separately, when I was testing it out, I used some ram sticks that I had laying around. It did pass post. I managed to install a no-GUI version of Ubuntu**, which (for all intents and purposes) seemed to work fine. Naturally, your mileage may vary.
**No GPU or CPU-based graphics, obviously.