Intensity settings - your opinion

[whitetoo]

Hi gurus,

I've read many things about the intensity setting in the mining conf/bat file. Many people say do not set the intensity above 13, others say that the intensity set at 20 will blow up a rig.
I cannot for the life of me get my GPUs to reach max hashrate without setting the intensity to 20. I wondered if anyone could enlighten me as to the possible cause of this?

[1715558069]

1715558069

[1715558069]

1715558069

[sgk]

It really depends on your card, each card has different optimum value for intensity.
For example my HD7950 cards run on full capacity when I run them at 19 intensity. Switching to 20 does not make a difference in hashrate. But due to warm climate and heating issues, I run them at 18 even though I get a little low hashrate.

If you're getting maximum out of your card at 20, you're fine with 20. There is nothing wrong with it.

[os2sam]

You should NEVER go above an intensity of 8, or 9 on newer GPU's.

Since your in the Bitcoin section your obviously talking about Bitcoin GPU mining! Right?

Because if your were talking about alt coin mining you would have posted in the alt coin section where you would be getting much more better and current help/suggestions. 

Good Luck,
Sam

[crazyates]

Now that you're in the right subforum, it depends on your card.

If you're running a 7970 or a 280x, then you should stick with I:13 and ONLY 13. This is because a 7970 or 280x works best with 2 gpu-threads.

Most cards will run better at 1 gpu-threads and a higher I: usually between 18-21.

[whitetoo]

It was just a general question really on the possibilities over over-stressing the cards with that setting. Obviously the technology behind the coins matter so thanks for moving my thread.
I am running Sapphire R9 290's some recommend them to run on 2 GPU threads but I find the hash rates fluctuate a lot sometimes 50-60hashes per card, so I have remained on 1 GPU thread for now.
Am I right in saying that if I ran them on 2 GPU threads I could actually lower the intensity? On paper that would maintain the same hash rate but isn't a given RULE as such as it depends on the hardware?

[jcarl987]

It was just a general question really on the possibilities over over-stressing the cards with that setting. Obviously the technology behind the coins matter so thanks for moving my thread.
I am running Sapphire R9 290's some recommend them to run on 2 GPU threads but I find the hash rates fluctuate a lot sometimes 50-60hashes per card, so I have remained on 1 GPU thread for now.
Am I right in saying that if I ran them on 2 GPU threads I could actually lower the intensity? On paper that would maintain the same hash rate but isn't a given RULE as such as it depends on the hardware?

For 290 run it with 1 thread and 20 intensity (maybe tweak if not mining standard scrypt), the fluctuating rate of 2 threads will not average out any higher.