QPP/Vtt Response
I am not seeing much affect from changing the QPP/Vtt voltage.
At one point in my trials, I had a bclock of 163, CPU Mult 19 (3.04GHz), Mem Mult 12 (DDR3 1920) at CAS 9-9-9-24-2 with DRAM 1.648V (actual) and QPP/Vtt of 1.475V. The system "beeped" and rebooted.
So I increased the QPP/Vtt to the max of 1.595V and Memtest+ gave 133 errors in 10:00 minutes.
Then I backed the bclock down to 160 and checked various QPP/Vtt values for 10 minutes to find the sweet spot:
QPP/Vtt Errors
1.595 2
1.575 3
1.555 0
1.535 1
1.515 0
1.495 1
1.475 6
1.455 2
1.435 0
1.415 2
1.395 4
1.375 2
1.355 1
1.335 2
1.315 2
1.295 system rebooted
The DRAM is maxed at 1.648V actual, so the QPP/Vtt did not stablize it or improve it. As far as I can tell, the best I can do at 9-9-9-24-2 is DDR3 1920. and the QPP/Vtt can be between 1.315 and 1.595.
Am I missing something?
I am not seeing much affect from changing the QPP/Vtt voltage.
At one point in my trials, I had a bclock of 163, CPU Mult 19 (3.04GHz), Mem Mult 12 (DDR3 1920) at CAS 9-9-9-24-2 with DRAM 1.648V (actual) and QPP/Vtt of 1.475V. The system "beeped" and rebooted.
So I increased the QPP/Vtt to the max of 1.595V and Memtest+ gave 133 errors in 10:00 minutes.
Then I backed the bclock down to 160 and checked various QPP/Vtt values for 10 minutes to find the sweet spot:
QPP/Vtt Errors
1.595 2
1.575 3
1.555 0
1.535 1
1.515 0
1.495 1
1.475 6
1.455 2
1.435 0
1.415 2
1.395 4
1.375 2
1.355 1
1.335 2
1.315 2
1.295 system rebooted
The DRAM is maxed at 1.648V actual, so the QPP/Vtt did not stablize it or improve it. As far as I can tell, the best I can do at 9-9-9-24-2 is DDR3 1920. and the QPP/Vtt can be between 1.315 and 1.595.
Am I missing something?
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