So, I've been following these threads for some time now and finally took the plunge - happily got my C6100 in yesterday. I was contemplating jumping into a fan mod as it can easily get loud enough to hear throughout the house from the basement, but was caught off-guard early on with the cpu temps I'm reading out over IPMI.
While I have booted them all on successfully, I currently have just a single node in a bottom slot wired up to 6 hdd bays, with a simple linux shell booted up and idling. At boot (and continuously thereafter) I see temps of ~46C on one core, and 60-64 on the second - longer idling doesn't seem to bring down the temps, save a degree or two on the second core. This is under no load on L5520's, with the stock fans all "humming" along at 6900 RPM and the lid on to keep air flow directed. Ambient is cool (65F, or 17-18C as reported by the ipmi ambient sensors), and the other MLB temps are reported as: 1 - 59C; 2 - 56C; 3 - 52C. I hear most people saying they see the L5520's idle closer to 40 (or less), so this has kind of taken me by surprise. Does anyone have any thoughts on what's going on, as I'd greatly appreciate it. Thanks!