I heard from our vendor that it is okay to put Low Voltage ram with regular voltage RAM. They said all that would happen is that the LV RAM would ramp up to match the 1.5v ram (in other words, the ram won't run at LV).
Can anyone confirm from experience if this is the case? From my experience mixing any factors in RAM is not the best idea, but curious about experience around this particular issue.
Best Answer
For the Dell R610s we're upgrading specifically, it is supported as indicated by the R610 technical guide:
Also, we've confirmed this by just installing such LV DIMMs in our web tier along-side non-LV DIMMs and all is well.
This may vary by server, but the way this is worded in several technical guides, it appears to be universally true that LV DIMMs will work at a normal 1.5V level.