nvidia-smi.exe, the actual application, was installed with the Windows Nvidia driver. I have used it on both the C2070 and the M2090 systems to compare what can be reported. As a result, I am pretty confident that the M2090 does not report temperature. Percent of memory usage is reported which is especially important to know when the project exceeds the memory of the GPGPU.
Win 7 64 bit, ASUS P6X58D Premium i7-990 @ 4.5 GHz
24 GB CORSAIR DOMINATOR
NVIDIA Tesla M2090 + NVS 290, Seasonic X750
Swiftech Apogee XT block, Indigo Extreme TIM
Swiftech MCR220-QP Radiator, Eheim 1040 pump, 1/2" ID Tubing