In this task, you're given a review from Amazon. Your task is to generate a rating for the product on a scale of 1-5 based on the review. The rating means 1: extremely poor, 2: poor, 3: neutral, 4: good, 5: extremely good.
Q: I purchased 8gb of RAM to upgrade my 2012 MacBook Pro. It definitely helped. RAM in general is way over priced now days but if your computer is compatible with these I would suggest purchasing some RAM. Overall a good purchase and I haven't had any issues so far. It's been about a month or more since my purchase.
A:
4