Tested the sticks again, ran memtest86 to test it out and see how it works with my origional 2 sticks in, it was fine. Tested one of the new sticks by itself, its fine. Put in the stick I think had caused issues before, and it came up with a couple of errors.
One, when I started Mass Effect it blue screened due to "IRQL_NOT_LESS_OR_EQUAL" and some bug code string at the bottom it doesn't give you time to write down (ie several things like this where # stands for a number between 1-9: 0X000000###).
Second, during the test it recorded two ECC Correctable Errors.
3. The test was 100% complete with 90% completed on what I assume is the last thing it was doing (so I guess it was really more like 99.99% done, but it said 100% but did not finish), however it stopped due to a CPU interruption? There was also a number of strings of code (like the BSOD one but less 0s) on the screen but I have no idea what they meant.