Hi again averysadman,
In all honesty I am not a fan of 8GB modules and would not recommend using them unless it was absolutely necessary to be able to run particular memory demanding programs, using 8GB modules that are not on the QVL is a gamble as no one is providing a guarantee that they will work ok.
I suggest that while the computer is running ok you run the Crucial system scanner tool and see what is suggested, if it suggests that 8GB modules are ok it is a step in the right direction, let us know what the results are please.
Hi, I ran the crucial scanner and these are my results: http://uk.crucial.co...ssocType=MEMORY