What are the minimum System Requirements for 12.04 LTS on a 2GB environment

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What are the minimum system requirements for 12.04 LTS?

I have 2GB RAM and an INTEL CORE DUO(3.73Ghz), it's a Toshiba Satellite L310. It doesn't work well in Ubuntu 11.04. If I install the Ubuntu 12.04 LTS, will it be lag again?