Replacing RAM for Asus M5A78L LE MB, Help?

[Luikkari]

Hello friends

So I'll be upgrading 4GB RAM to 8 GB RAM (hopefully 8gb?). I would love some help on making the right choise in choosing the memory.
To make things maybe a bit easier here are my current specs:

Spoiler

- Asus GTX650-E-1GD5 NVIDIA GeForce GTX650
- Western Digital Caviar Blue 500GB SATA3
- Asus DRW-24B5ST/BLK/G/AS 24x DVD+/-RW
- AMD FX-4100 3.6 Ghz 4-core Black Editon
- Asus M5A78L LE 760G AM3+ ATX motherboard
- Kingston Valueram 4 GB 1333 MHz DDR3
- Codegen miditowerer
- 420W power supply (I've ordered a 550W power supply)
- Microsoft Windows 7 Home Premium 32-bit (Will be upgrading to 64-bit ofc)
- I've also ordered a new cpu cooler.

So, should I be buying a whole new 2x4gb ram packet or keep my current 4gb ram and buy another one on top of that? Does it work like that?
I was scrolling through an online shop and I saw this:
http://www.jimms.fi/tuote/KHX24C11T3K2%2F8X
What do you think? Any recommendations?

 

[vortical]

You should never mix, ram brands/types/speed etc. of any kind, if you do not want to replace your ram, you need to buy more of your exact variety that is currently installed

 

[bob hays]

^^^ actually, if you can find a good deal on 1 4gb stick of ram I would go with that. Try it out and see if it works, a lot of people advise against it but many times it works out. The latency and speed will just be set to whichever the slower stick of ram has it set to. If it doesnt work you can just order another stick and that will work since its the same model.

 

[Luikkari]

Any recommendations?

 

[bob hays]

Any models from kingston, g.skill, corsair, crucial. There are others but I don't remember them all right now.

 

[Luikkari]

Any models from kingston, g.skill, corsair, crucial. There are others but I don't remember them all right now.

Are you talking about buying a 2x4gb pack or one 4gb next to my current one?

 

[bob hays]

Any models from kingston, g.skill, corsair, crucial. There are others but I don't remember them all right now.

Are you talking about buying a 2x4gb pack or one 4gb next to my current one?

If you can find 1x4gb for close to half the price of a 2x4gb, try that one first. If it doesn't work you can just order another one and in the end it will be the same price.