I need to upgrade the RAM in my MBP as 4GB just isn't cutting it any longer. I found this on Amazon "http://www.amazon.co.uk/gp/aw/d/B006EWUOL8/ref=mp_s_a_6?pi=75x48&qid=1346141948&sr=8-6". Will this be suitable and compatible. Any suggestions are welcome but I need to purchase from Amazon as my funds are low and I have a voucher for them. Thanks to anyone who helps.