Choosing the right memory

[Strandwall]

Hello,

I would like to begin with declaring that I don't really understand much of computers, so if anything I say seems ridiculous or incompetent - this is the reason.

As I recently reinstalled my Windows XP computer and replaced it with Win7, I decided that I need more RAM. However, I have heard that choosing a wrong memory can be fatal not only for the new attachment but also for other parts in the computer system. Considering this fact, I decided to turn to you for help, giving you as much information about my parts as you need to suggest me the most appropriate thing to do. Now, here are some things you may need to know:

CPU - http://puu.sh/7w5IK.png
Motherboard - http://puu.sh/7w5Ks.png
Memory that I have at the moment - http://puu.sh/7w5Ln.png

I will use my computer mainly for gaming and watching movies, but also there should be a possibility for video and photo editing. Although I'm not really the multitasking type of person, I usually keep several tabs (music, Facebook, forums, etc) open in Google Chrome while playing some game, as well as Skype and sometimes Drompbox and uTorrent, so this should be taken into account. Several friends of mine told me that 4GB RAM (which means 2 more than present) would be perfect for my uses. I have no idea how to pick one and I really hope you could help me.

Thank you in advance.

 

[AMDRadeonHD]

If you want to add another RAM module, you need to open your case and see what frequency and name of your brand is, then try to find the same module on the internet and buy it, if it isn't available or the manufracturer doesn't produce it anymore, you need to buy a new pair of RAM sticks, it doesn't matter if it's 1×4GB DDR2 0r 2×2GB DDR2, but if you choose to buy 1×4GB DDR2, you can add a second 1×4GB DDR2 later for a great upgrade.

 

[Strandwall]

If you want to add another RAM module, you need to open your case and see what frequency and name of your brand is, then try to find the same module on the internet and buy it, if it isn't available or the manufracturer doesn't produce it anymore, you need to buy a new pair of RAM sticks, it doesn't matter if it's 1×4GB DDR2 0r 2×2GB DDR2, but if you choose to buy 1×4GB DDR2, you can add a second 1×4GB DDR2 later for a great upgrade.

Is there any other other requirement but this DDR2 thing so that the new module is compatible with the motherboard ? I mean in case that I want to buy completely new ones (and get rid of the present).

 

[AMDRadeonHD]

If you want to add another RAM module, you need to open your case and see what frequency and name of your brand is, then try to find the same module on the internet and buy it, if it isn't available or the manufracturer doesn't produce it anymore, you need to buy a new pair of RAM sticks, it doesn't matter if it's 1×4GB DDR2 0r 2×2GB DDR2, but if you choose to buy 1×4GB DDR2, you can add a second 1×4GB DDR2 later for a great upgrade.

Is there any other other requirement but this DDR2 thing so that the new module is compatible with the motherboard ? I mean in case that I want to buy completely new ones (and get rid of the present).

If you want to buy completely new ones, it must be DDR2, but if you want DDR3, you need to buy a motherboard that supports DDR3.