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[Official] MSI GTX 780 Lightning Owner's Club - Page 358

post #3571 of 5050
Quote:
Originally Posted by Rekones View Post

have no dangerous to VGA? get damaged/burnt?

I leave my power limit at 287%. The highest power limit mine hit was about 150% when I was using 1.4 volts and trying to reach 1500 core.

Have you flashed a skyn3t bios yet? It sounds like you need more voltage for stability. You may need a flashed bios and upping the voltage with Rbby tool to go further in addition to raising the power limit.
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post #3572 of 5050
Quote:
Originally Posted by Bishop07764 View Post

I leave my power limit at 287%. The highest power limit mine hit was about 150% when I was using 1.4 volts and trying to reach 1500 core.

Have you flashed a skyn3t bios yet? It sounds like you need more voltage for stability. You may need a flashed bios and upping the voltage with Rbby tool to go further in addition to raising the power limit.



yes, I flashed the skyn3t bios rev4 in LN2, I downloaded Rbby Tool but I don't know how to use it, my Aux Voltage is 1050 and Memory Voltage is 1605 so I put it to the max and add more using Rbby Tool? what value you consider safe to add to start?

Thank you!
post #3573 of 5050
Quote:
Originally Posted by GOLDDUBBY View Post

Pretty much all aftermarket made 780's have a cooler that dispatch the heat in to the "free air" that is the air inside your computer case, unless you have an open air or testbench type of setup.

If you do have a closed case then the hot air from the bottom card will be used to cool the top one, this in a mix with the air that is getting pulled in by chassi fans.

Complicated answer to a simple question it might seem, but in short;
the better airflow your case has, the better the cards will cool.

If you have a room and place a 600w heater in there, then you will reach a certain temperature increase, if you place one more 600w heater in there the temperature will increase accordingly.

You can then open a window "increase airflow" and/or turn the heaters settings down "lower the clocks"
Well, I thought about what you said and it all made sense so I just ordered another Lightning. Im going to add a few more case fans and fan controller and see what happens. Hopefully its not a flamethrower in there once I get it going next week:)
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post #3574 of 5050
1.7v on Memory, 1.150 on Aux, and GPU Voltage oscillating, but the max reach is 1.279v is safe? can I raise GPU Voltage to 1.3v?


Att. Recco
post #3575 of 5050
Yes, but what temperatures are you getting under load? You are on aircooling or water ?
post #3576 of 5050
Quote:
Originally Posted by GOLDDUBBY View Post

Yes, but what temperatures are you getting under load? You are on aircooling or water ?

Max 78ºC on Air, but getting small artifacts on 1305mhz, should I raise to 1.3v?
post #3577 of 5050
GTX-TITAN-29.jpg

Using sky's bios the gpu-boost is disabled, but the chart give a good gk110 overview about what you can expect in overclocking / volt / temp ..
post #3578 of 5050
If I set the voltage in afterburner to +100mV what should the voltages be around? Because I have 1.22 max and that only happens when I run cudaminer at 1333MHz. Usually i get between 1.209 and 1.215 while playing BF4 and Titanfall at max. Also, the minute I touch memory and benchmark, the drivers crash so is that weird or is it just because I have a highish overclock?
Edited by Glaborix - 5/10/14 at 4:59pm
post #3579 of 5050
Quote:
Originally Posted by Rekones View Post

1.7v on Memory, 1.150 on Aux, and GPU Voltage oscillating, but the max reach is 1.279v is safe? can I raise GPU Voltage to 1.3v?


Att. Recco

I would leave aux and memory at default. Concentrate on maxing out your core speed and voltage. Once you have that nailed down, I would see what you can do for the memory. If you still see artifacts, it means that you need to increase core voltage. I wouldn't be comfortable doing more than 1.3 volts core 24/7 with the air cooler. That is just more my comfort level though.
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post #3580 of 5050
Quote:
Originally Posted by Glaborix View Post

If I set the voltage in afterburner to +100mV what should the voltages be around? Because I have 1.22 max and that only happens when I run cudaminer at 1333MHz. Usually i get between 1.209 and 1.215 while playing BF4 and Titanfall at max. Also, the minute I touch memory and benchmark, the drivers crash so is that weird or is it just because I have a highish overclock?

It depends on the load that the core needs. If I set mine to +100, mine might sit somewhere around the voltage that you are talking about if the load is lighter on the card. If pushed really hard, it goes up to 1.25 or so volts.

It is possible that your crashes are related to not enough voltage. It sounds like your memory may not be too receptive to overclocking. What happens if you leave everything else at stock and overclock just the memory? Does it still crash?
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