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Intermittent Failure on Test 10
Hi,
I've been doing some hardware testing due to overall poor performance on my Mac system. On running memtest, I got numerous errors on test 10 on my system. All other tests and loops passed.
My iMac has 4 sticks (2x2GB, 2x4GB). I pulled one side (1 2GB, 1 4GB), re-tested and had no failures. I then added one stick from the other side (2nd 2GB stick), reproduced the failure, and assumed that stick was bad. I put the other 4 GB stick back in, tested and also got a failure on test 10.
I then proceeded to test one of the slots that likely had the consistently failing stick. I took the KG 2 sticks, and moved one to the appropriate slot (6 GB total). I tested and got no failures.
Then, just for definitively replicating that I had 2 known bad sticks, I pulled the KG RAM and stuck in the suspect RAM, and retested. I used the specific slot that was also suspect, but tested good. In this last test, with 6 GB in the machine, I have gotten no failures.
At this point, I suspect that I either have a weird failure on my machine using 8 GB or more of allocated memory, or something is popping a false positive.
I've attached screenshots of my findings. I should also mention that the number of failures found is very consistent.
Any ideas/suggestions are appreciated.
I've been doing some hardware testing due to overall poor performance on my Mac system. On running memtest, I got numerous errors on test 10 on my system. All other tests and loops passed.
My iMac has 4 sticks (2x2GB, 2x4GB). I pulled one side (1 2GB, 1 4GB), re-tested and had no failures. I then added one stick from the other side (2nd 2GB stick), reproduced the failure, and assumed that stick was bad. I put the other 4 GB stick back in, tested and also got a failure on test 10.
I then proceeded to test one of the slots that likely had the consistently failing stick. I took the KG 2 sticks, and moved one to the appropriate slot (6 GB total). I tested and got no failures.
Then, just for definitively replicating that I had 2 known bad sticks, I pulled the KG RAM and stuck in the suspect RAM, and retested. I used the specific slot that was also suspect, but tested good. In this last test, with 6 GB in the machine, I have gotten no failures.
At this point, I suspect that I either have a weird failure on my machine using 8 GB or more of allocated memory, or something is popping a false positive.
I've attached screenshots of my findings. I should also mention that the number of failures found is very consistent.
Any ideas/suggestions are appreciated.
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