can i upgrade i3 530@2.93GHz from 2GB to 4GB for windows 7 professional

Solution
http://www.crucial.com/
run the memory advisior on the web page it read your mb info and give you the model info and the ram speeds and kits numbers.

Azn Cracker

Distinguished
err depends on your operating system. I think 16 gb if you have windows 7 Home premium or older (64bit)

Otherwise 4gb if you have 32 bit.

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Oh yea as someone pointed out, your motherboard might limit too. (8gb is a common limit on older boards)