thank you very much for your answer and your help, you are very kind.
Thanks againOnce I found the core and memory clock values, how do I proceed for the voltage values?
It's the same as you're doing, step by step
Memory controller voltage have default value of 850mv
Memory voltage is 1350mv
Core voltage I think it's 984mv
You can put these manually, and reduce little by little, but only if you want to reduce temperature or power consumption, if you are satisfied, you can leave stock
Let's say for first test you can set to:
Memory controller voltage have default value of 840mv
Memory voltage is 1330mv
Core voltage I think it's 964mv
And another question was if the clock should I leave it stable at 1300 or even that I have to increase?
Now I started as you said with 1300 clock and 850 memory, and I wanted to see if it is stable for 1/2 hours, then I will increase.
Without overclocking it was stable for 5 hours without any problems.
For core clock, most of cards will work good with 1300, you can reduce and card will save power, but will reduce hashrate
I prefer to leave at 1300mhz, but it's up to you
You see, without overclocking your rig is stable, you found the problem, I think this is the best way to find and fix problems with rigs and PCs in general