Add more RAM to my ’08 MacBook?

Hi,
I have been somewhat dissatisfied with my 08 MB lately. Switching between tabs has been slow when there are many tabs open. Combine it with photoshop and I have to stare at my wall a lot. It seems like the CPU not often reaches its limits whereas the RAM is totally full.
http://browser.primatelabs.com/geekbench2/2042116
These are my performance scores. Should I pay 60� to get 4gb? Would it increase the performance?
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Answer #1
Yes, increasing the memory should help.
If you have one 2GB module, you could add another 2GB one.
The price you suggested seems rather high for memory, Google around a bit..
http://support.apple.com/kb/ht1651#link3