Adding a second DIMM to an HP laptop

I have a new HP g7-1227 Notebook it has 4 GB RAM. In the system properties it says there is a second empty DIMM slot. Can I put another DIMM in there, is it even worth trying and if so how many GB can be on the second DIMM? Would this help performance at all?
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  1. Hello and welcome to Tom's Hardware Forums.

    It will take 8Gb and in a Windows 7 system it will make a difference but 4Gb should be adequate. Here's the specification from Crucial's website and they want around $45 for it. You're probably looking at half that for the 4Gb upgrade but be careful on e-Bay or similar to ensure you get only what's printed below.

    8GB Kit (4GBx2)
    DDR3 PC3-10600 • CL=9 • Unbuffered • NON-ECC • DDR3-1333 • 1.35V • 512Meg x 64 • • Part #: CT2675171

    Alternatively, go to your country's local site of and take the online scan - the ActiveX object is safe and harmless - and get your own local price.

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