That's a damn shame since it's not an easy fix to upgrade to a 64bit machine for a lot of folks. And lite is... a bit too light for my taste. Telling people to use Lite is not a fix.
The RAM bloat for minecraft has really gotten out of hand imo. It uses an absurd amount, and I know java's memory management is crappy, but it seems like more than that. So many mod developers are reinventing the wheel in their mods and the overhead that is from that is only getting worse as time goes on. Even on my desktop, I see tons of errors fly by in the console and I wonder how many of those are contributing to poor performance on my i5 with 8GBs of RAM, I get better framerates in BF4 than the current DW20 pack.