Had these sticks of ram for a while now and don't give me any issues until I tried them out in slot 3 & 4. Just won't boot until I change the latency to 2.5. So I deceided to test the memory. Turns out I get errors in memtest software from hcidesign within a few seconds with 2-3-2-5 timings, but I don't get any errors if I run memtest86+ overnight. Looks like my motherboard doesn't like the aggressive timings but the system hasn't given me any issues unless I stick them in slot 3 & 4. Which test should I believe?