Ram upgrade (not sure which macbook pro 13" model I have)

Hello everyone, I have two questions:
The first being that I am needing to upgrade my ram from the standard 4gb to an 8gb. I was wondering if its possible for me to expand that up to 16 gb with my specific model having a 2.3 i5 processor with a memory of 4gb 1333 mhz ddr3.
Second would be if there are brands that are compatible with macs, the reason being that I am a student and cannot afford much.
I have done some researched and tried to look up these specification, but even with the apple guidelines, still left me confused as to how this process has to be done. I have experience with doing this for a pc, but not on a mac.
I'd greatly appreciate any input or advice, thank you very much!

Welcome to Apple Support Communities
As your MacBook Pro has got an Intel Core i5 processor and 1333 MHz DDR3 RAM, you have got a 2011 MacBook Pro.
You can install up to 16 GB of RAM. As you want to install 8 GB of RAM, you can buy one module of 8 GB or two modules of 4 GB. I recommend you the last one, because it will give you Dual Channel, which will improve performance a bit.
You can buy RAM at OWC or Crucial. Some types of RAM cause problems with Macs, like Kingston ValueRAM. Apart from that, any RAM should work, but OWC and Crucial sell tested RAM

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I am getting these sticks
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http://www.newegg.com/Product/Product.aspx?Item=N82E16820104253
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http://www.amazon.com/Corsair-DDR3-Laptop-Memory-CMSO8GX3M2A1333C9/dp/B002YUF8ZG /ref=cm_cr_pr_product_top
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Thanks for the reply.I really appreciate.
This is one of the safest solution.I can return it but in our region Transcend is a trusted brand with acceptable service and repair. So, there are not too many reasons from moving away from the brand !!
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Model Name:          MacBook Pro
Model Identifier:          MacBookPro7,1
Processor Name:          Intel Core 2 Duo
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Number of Processors:          1
Total Number of Cores:          2
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Manufacturer:          0x0198
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<Edited By Host>

Can someone delete this thread ?
I just fount out that I confused it with my the other macbook.
I open it and check there is only 2x4G ram installed on the computer.
Sorry for the confusion here & Thanks.

Ram upgrade (not sure which macbook pro 13" model I have)

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