How much faster is 2nd gen i3 to core 2 duo?

My current laptop which is classified as mid-high-end back in 2008 has a Intel core 2 duo T7300 2.0Ghz.
How much faster is a mobile 2nd gen Core i3 CPU like this http://ark.intel.com/products/52220/Intel-Core-i3-2310M-Processor-(3M-Cache-2_10-GHz)

I am just curious how far is my laptop left behind. It also has Nvidia GT 8600m. Is that GPU slower than HD3000?
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More about faster core
  1. http://www.anandtech.com/bench/Product/62?vs=289 here is a comparison to a CPU close to yours

    and about all HD3000 has on your 8600 is *edit* nothing
  2. HD 3000 only supports dx10
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