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Nvidia 980a NB voltage

post #1 of 15
Thread Starter 
Hi All,

I know not many people have the 980a chipset. But I was just wondering what is the max voltage people have ran for 24/7 OC?

I currently have:

NB Voltage - 1.15V
HTREF - 220Mhz

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post #2 of 15
Do you mean cpu-nb voltage or just NB voltage?

Gyro
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post #3 of 15
I ran 1.5v on my M4N68t no problem,didn't scale past 1.4v though.
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post #4 of 15
Thread Starter 
Quote:
Originally Posted by Gyro View Post
Do you mean cpu-nb voltage or just NB voltage?

Gyro
NB Voltage (ie the chipset)

I thought the CPU-NB is part of the IMC on the CPU.

I am interested in the NB ie 980a chipset voltage that people have been running 24/7 stable.
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post #5 of 15
I have the 780a and have it set to 1.18V currently. 980a is rebranded 780a, so the same thing. I have had it as high as 1.26V, but took it back down for a lower everyday clock that I can live with.
post #6 of 15
Thread Starter 
Quote:
Originally Posted by boostinsteve View Post
I have the 780a and have it set to 1.18V currently. 980a is rebranded 780a, so the same thing. I have had it as high as 1.26V, but took it back down for a lower everyday clock that I can live with.
What did you set your HREFCLK to then?

1.26V and 1.18V?
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post #7 of 15
Mines on auto never had to change it,because I've not really pushed it.
Sorry I was not any help.

Gyro
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post #8 of 15
Thread Starter 
Quote:
Originally Posted by Gyro View Post
Mines on auto never had to change it,because I've not really pushed it.
Sorry I was not any help.

Gyro
Hi Gyro, No problem mate,

What HTREFCLK are you running then?
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post #9 of 15
Quote:
Originally Posted by Mitche01 View Post
What did you set your HREFCLK to then?

1.26V and 1.18V?
The foxconn destroyer has a weird scale in their bios for NB voltage. When I had it at 1.26V, I was at 4 GHZ on the processor, but Ram was much higher. It was at 1120 MHZ, a lot of the timings at 4 cycles. I decided to back it off to 3.625 GHZ and 1 GHZ ram. NB is at 2250 MHZ, and very stable.
post #10 of 15
On my Asus/nVidia board-the IMC voltage is listed as VDDNB-this should be slightly lower than your CPU vcore.You will need to increase this to overclock a higher ref clock.NB(chipset) voltage will help you run a higher ref.I was able to hit 300 ref. clock and about 2800 MHz NB.
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