X201 Upgrade to 8GB = Kill Battery Life

I upgraded my x201 to 8GB of RAM from 4 GB (2x2GB) and it knocked my battery life down by about 2 hours.  Has anyone else had this same issue?  I can't believe that going to two 4GB DIMMs from two 2GB dimms would reduce battery life by that much, so I'm wondering if there is a way to reduce the battery power draw or anything else?

try to remove the memory stick you added, then check if issue stills persists. if the battery life doesn't change after removing it, it's not because of the ram stick.

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    /L40SX/240/240X/2*340CSE/360PE/365XD/380D/380E/380XD/380Z/390/560E/560X/2*570/2*600/600E/750Cs/755C/760CD/760EL/760XD/770E/A20p/A22p
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