09-29-2014, 05:11 AM
The hash rate has gone down because the clock is throttling due to the heat.
It seems that the problem is that the 290X is supposed to be a Powertune 2.0 GPU, but a lot of OEMs are not fully implementing Powertune 2.0 on their cards. This is why you see the warning that ADL can't get the target temperature, which is a Powertune 2.0 feature, and why other Overdrive & Powertune features do not behave correctly.
So yeah, it's just a bad GPU to use with oclHashcat.
It seems that the problem is that the 290X is supposed to be a Powertune 2.0 GPU, but a lot of OEMs are not fully implementing Powertune 2.0 on their cards. This is why you see the warning that ADL can't get the target temperature, which is a Powertune 2.0 feature, and why other Overdrive & Powertune features do not behave correctly.
So yeah, it's just a bad GPU to use with oclHashcat.