Noise levels
The i-RAM is silent, so it doesn't add any noise to a system—well, at least not unless you have some funky active DIMM cooling.

Power consumption
Power consumption was measured for the entire system, sans monitor, at the outlet. We used the same idle and load environments as the noise level tests.

Given its performance, the i-RAM's power consumption is certainly reasonable. It doesn't really consume less power than your average Serial ATA hard drive, but it's much more frugal than multi-drive RAID arrays, and those are the only configurations with a chance of even coming close to matching its performance.