- Mar 16, 2014
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Hi
I have recently added 3 further DIMMS on my Gigabyte x58 mobo to take the total RAM from 6GB to 12GB
Specs are:
Mobo: Gigabyte EX58-UD4
CPU: Core i7 920 D0 at stock 2.66Ghz
RAM: OCZ Gold CL9 1333Mhz 6x2GB = 12GB
I tested using P95 blend, which initially showed rounding errors within a few minutes on all 8 workers. I then have loosened the RAM timings to 9-9-9-28 and upped the RAM voltage to 1.66V (they are rated for 1.65V)
I also have upped the QPI/Vtt voltage incrementally.
It appears that small, stepped increases to the QPI/Vtt voltage is increasing the stability on P95, although overnight the workers found rounding errors on all but one core, within 3-5 hours.
Is my strategy correct? to hold all other adjustments and slowly increase the QPI/Vtt? Will this increase the stability
For reference, I ran Memtest86 4.3.6 and found no errors.
I am monitoring temparatures using RealTemp and they are acceptable.
Currently voltages are:
Vcore 1.2625 (stock)
QPI/Vtt 1.3135
IOH Core 1.100 (stock)
DRAM Voltage: 1.66V
Please let me know if I am missing something, or any advice/thoughts are welcomed.
many thanks
I have recently added 3 further DIMMS on my Gigabyte x58 mobo to take the total RAM from 6GB to 12GB
Specs are:
Mobo: Gigabyte EX58-UD4
CPU: Core i7 920 D0 at stock 2.66Ghz
RAM: OCZ Gold CL9 1333Mhz 6x2GB = 12GB
I tested using P95 blend, which initially showed rounding errors within a few minutes on all 8 workers. I then have loosened the RAM timings to 9-9-9-28 and upped the RAM voltage to 1.66V (they are rated for 1.65V)
I also have upped the QPI/Vtt voltage incrementally.
It appears that small, stepped increases to the QPI/Vtt voltage is increasing the stability on P95, although overnight the workers found rounding errors on all but one core, within 3-5 hours.
Is my strategy correct? to hold all other adjustments and slowly increase the QPI/Vtt? Will this increase the stability
For reference, I ran Memtest86 4.3.6 and found no errors.
I am monitoring temparatures using RealTemp and they are acceptable.
Currently voltages are:
Vcore 1.2625 (stock)
QPI/Vtt 1.3135
IOH Core 1.100 (stock)
DRAM Voltage: 1.66V
Please let me know if I am missing something, or any advice/thoughts are welcomed.
many thanks