Best way to describe the noise is a high-pitched squeeling. Best way to reproduce is to run HD tune Benchmark for Read. It's almost a constant sound and it's awful. Is this normal? Any chance I have a defective SSD? Definitely never heard it before, with my old hitachi 7.2k, same test.
Update -- think I resolved it, read my last message in this thread: http://communities.intel.com/message/84606# 84606
No noise... Should I RMA this drive? Also, the speed seems inconsistent, and not nearly as fast as I was expecting... but that's no real surprise given the uber hype all around the interweb.
I think I discovered the cause of my noise. I have a Lenovo x200 Thinkpad that has Intel Turbo Mem. I hadn't fully disabled it yet, apparently, as in "ReadyDrive" was still enabled. Since I disabled it (in Intel Mgmt console software only) I haven't heard the sound. Great news, a little weird though.
Next step will be to physically remove it, but I have to basically disassemble the whole thing to get at it.