Asus have Samsung memory
MSI have Hynix memory
How to clock it can you explain me with afterburner for example?
Basically In MSI afterburner, you can see already the Coreclock, Memory Clock and power limit.
look here
https://www.youtube.com/watch?v=Tg2JDgfM6lgYou mean me to try with 3 GPU only? But can you tell me something ? My windows 7 uses 2 gb ram while 1gb left is that possible to be a problem? I set 1 thread per one gpu ?
nah, 4GB ram should suffice, try to set your virtual mem also to atleast 16GB. yeah try the 3 GPU setup, just to isolate your PSU suspect.