Battery Depletion While Sleeping...can we make it better?

I was thinking, but have not had time/resources to do any benchmarking.
If these laptops use battery juice while sleeping to preserve the contents of RAM....Would freeing up RAM (quitting applications, flushing cache to disk etc) make an difference on battery lost during sleep?

bernuli wrote:
I was thinking, but have not had time/resources to do any benchmarking.
If these laptops use battery juice while sleeping to preserve the contents of RAM....Would freeing up RAM (quitting applications, flushing cache to disk etc) make an difference on battery lost during sleep?
No. You can't preserve just part of RAM.

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