RAM problem with old motherboard

[AntonisSip]

Hello all, I have an asuss p5g41m -lx motherboard which supports DDR3 but NOT the high density ones because it is old. So I had 2 modules of 2GB each but one has failed ( when I have it on the pc bsod every time windows start to load and sometimes it doesnt even post). With 4GB I was ok but now with only 2GB things are getting pretty slow. I bought a kingston hyperx furry 1333MHZ but it is high density and it does not work so I returned it. The issue is that I can't find a ram stick that will work on my motherboard because most are discontinued and I also live in Greece. I have found some modules here in greece but I am not sure if they are high density or no. can someone help me? I do not have the money to buy a new cpu motherboard and rams  

These are the modules I have found:
RAM MUSHKIN 991770 4GB DDR3 PC3-10666 1333MHZ SILVERLINE SERIES
RAM KINGSTON KVR13N9S8/4 4GB DDR3 1333MHZ PC3-10600
RAM KINGSTON KVR13N9S8H/4 4GB DDR3 PC3-10600 1333MHZ CL9 VALUE RAM
RAM CORSAIR CMV4GX3M1A1333C9 4GB DDR3 VALUE SELECT PC3-10600
RAM CRUCIAL BLS4G3D1609DS1S00 BALLISTIX 4GB DDR3 PC3-12800 1600MHZ
RAM G.SKILL F3-1333C9S-4GNS 4GB DDR3 PC3-10666 1333MHZ NS
Is any of these modules compatible with my motherboard? thanks in advance.

[corbetto]

Go to the asus site and lookup your mobo and bring up the qvl for memory. This will give you a list of all of the known working ram chips with your mobo. Then you will probably have to do some digging on second hand sites(such as ebay).

[LabRat]

there was something similar to this earlier today. scour the forums. something about size and bit.

[AntonisSip]

I checked and I found just one company that has old rams but I cant find it in greece GG i guess i have to save money for new cpu-mobo-ram