Is this RAM Compatible?

[HarrY_12321]

I have 1x4GB DDR3 RAM currently installed, (not sure which speed; specs etc) but i would like to upgrade to 6GB therefore, I am buying a 2GB Module.
My motherboard is a FOXCONN 2ABF (H61) and processor is i3-2120 Sandy Bridge. The motherboard memory specs is as follows;

2 x 240-pin DDR3 DIMM slots Supports Dual Channel DDR3 1333/1066 MHz non-ECC, un-buffered memory

Can I buy any DDR3 RAM which is DIMM (Or UDIMM too?) and has 1333/1066 non ecc unbuffered? Or do I need a certain one which is the EXACT same specs?
PC3-12800

Which one of these will work? Or will they not?

http://www.ebay.co.uk/itm/1x2GB-PC3-10600U-CL9-240-pin-DIMM-DDR3-RAM-Memory-DESKTOP-PC-limited-stock-/252419739495?hash=item3ac5638f67:g:e7IAAOSwbYZXWhCV

http://www.ebay.co.uk/itm/2GB-1x2GB-DDR3-1333MHz-PC3-10600-ECC-Unbuffered-240-pin-Desktop-Memory-RAM-/322196358178?hash=item4b04664422:g:tGQAAOSwdzVXjMLM

 

[anghellic]

deleted my post i should of read the whole post before saying a thing lol

 

[greens]

First off, you don't want to buy a 2GB stick, you want to buy another 4GB stick.

The good news, is that adding a matching stick of ram is going to dramatically improve performance.

ALWAYS match RAM. Always - it is the only way it will run in dual channel mode, which is crucial.

I'd like you to download a program called CPU-Z or HWINFO from a company called CPUID.

This is going tell you the details on your RAM, that way we can find out what the correct stick for you is.

 

[Tradesman1]

Simply put their are no guarantees when mixing packages of DRAM. Always best to buy a single package of the full amount of DRAM you want/need. See items 2 and 6 in my Fiction article:

http://www.tomshardware.com/answers/id-2741495/ddr3-faq...

 

[HarrY_12321]

I know but last time I bought incompatible ram due to someone telling me which to buy...

I have checked cpu-z and them two links are the ones I found, will they work? Same speed and pc3 xxxx so... Does UDIMM AND DIMM matter?

 

[Tradesman1]

AS said, there are no Guarantees when mixing