OK to add a 1.5v module to a 1.35v system?

Kilobyte Kid

OK to add a 1.5v module to a 1.35v system?



I'm looking to add one 8GB DDR3 module to bring me up to a total of 16GB, but my current chip is a 1.35v module. It's a Crucial model (BLS8G3D1609ES2LX0) of Ballistix Sport DDR3L 1600 but that exact model doesn't seem to be in available any longer.


The closest 8GB module that I can find is Crucial part # CT2870408, which is virtually identical (same 9-9-9-24 timing) to what I have now, but it's listed as a 1.5v module.


The Crucual scan guarantees compatibility, but I'm a little concerned about "mixing" voltages. Can I run the new 1.5v module without any issues?


My board is an ASRock Z77 Extreme4.



1 Reply
Community Manager

Re: OK to add a 1.5v module to a 1.35v system?

@choptop82 Thanks for contacting us today. Yes, this should be fine. The memory should just run at the higher voltage if mixed. This memory is actually dual voltage memory, so it can go from 1.35v to 1.5v with no issues. Please let us know if you have any other questions or concerns. 

YogiH, Crucial Moderator, US

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