I have the exact same April 2010 13" MBP (MacBook Pro 7.1) and I have 8GB RAM.
Yes it made a HUGE difference from the 4GB I had when I bought it. I am able to open many more browse tabs, and have many more programs running concurrently.
I am going to upgrade mine to 16GB in the next week or two, so if you are interested, I will sell you this
8GB kit (2 x 4GB) OWC RAM (about 8-9 months old) for $40 + whatever it costs me to send it to Poland via Canada Post (I have a commercial account, so you will get a discount on the shipping too)
Reply here or email me at
eljefe |AT| a1websolutions |DOT| com 