I need more compatible RAM with my RAM

[Little Anzony]

Hi!!!

Well, I need more RAM (8gb) and I need to know what type of RAM i have to buy.

My actually RAM are these: http://www.gskill.com/products.php?index=243
My PC:
-CPU: AMD phenom 2 x4 955 black edition
-Motherboard: gigabyte GA-880GMA-UD2H (http://es.gigabyte.com/products/page/mb ... _20/specs/)
-Graphic card: Ati HD 6780
- Disk : WD caviar black 640gb

I think these RAMs can run it on my PC http://www.gskill.com/products.php?index=239.
I have tried the RAMs of my brother's pc : http://www.gskill.com/products.php?index=223 and my pc runs ok.

Sorry for my badly english... jaja.

[Tradesman]

Mixing different sets can be be a problem, might try mixing the set from your brothers computer with yours, and if that works, buy a natching set or different for his...or next best would be to buy an identical set to yours (though when mixing sets, even of the same model, there's no guarantee that they will work together), third option to get to 8GB would be an 8 GB set (2x4GB preferable, as two sticks instead of 4 will be less stress on the MC (Memory Controller))