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P95 question...1100T OC

post #1 of 6
Thread Starter 
so i have been stress testing my 1100T and the 6th worker failed.

Code:
FATAL ERROR: Rounding was 0.5, expected less than 0.4
why does this occur and what can be done to mitigate it?

its happened @ 250MHz x 16 / 2GHz HT / 3GHz NB 1333MHz
and @ 300MHz x 13 / 2.1GHz HT / 3GHz NB 1600MHz @ 1.65VDC

NB voltage upped a little...
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The Beastie
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post #2 of 6
You have to add more voltage to the CPU.
post #3 of 6
Thread Starter 
Quote:
Originally Posted by Angmaar View Post
You have to add more voltage to the CPU.
I have but not too much....currently @ 1.38V

oddly enough its stable at 250 x 16 @ 4.015.


all 6 physical cores 10 mins in @ 104* F and cruising.

so what causes a random worker failure?
The Beastie
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The Beastie
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post #4 of 6
not enough vcore.
    
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post #5 of 6
Set your V-Core to about 1.45-147
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post #6 of 6
Quote:
Originally Posted by Ctrl+Alt+Del View Post
I have but not too much....currently @ 1.38V

oddly enough its stable at 250 x 16 @ 4.015.


all 6 physical cores 10 mins in @ 104* F and cruising.

so what causes a random worker failure?
Not enough CPU Voltage or Not enough CPU/NB Voltage

For example: My experience

CPU Core Voltage: 1.403volts
CPU at 20x200 = 4000mhz O/C
CPU/NB Voltage: 1.253volts
NB Frequency at 2800mhz

Completely unstable for me(even with raising CPU Core Voltage to 1.55volts)

CPU Core Voltage: 1.403volts
CPU at 20x200 = 4000mhz O/C
CPU/NB Voltage: 1.256volts
NB Frequency at 2800mhz

Completely Prime95 8hours + Stable for me, just an increase in CPU/NB Voltage help stable my overclock_ (At stock 3.2ghz Clocks on CPU with CPU Core Voltage set to Auto, I am 8hrs+ Prime95 stable on the NB Overclock but once I bring the CPU Clocks to 4ghz it goes unstable so raising the CPU/NB Voltage help to stable the overclock)

Its odd but CPU/NB Voltage seems to have a greater effect on Overclocks than we usually think.

You gotta find the perfect balance between the two =]
Edited by httuner - 4/22/11 at 5:40pm
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