Quote from: pallas on September 04, 2015, 12:28:26 PM

Quote from: djm34 on September 04, 2015, 12:24:43 PM

Quote from: sp_ on September 04, 2015, 12:12:01 PM

Quote from: djm34 on September 04, 2015, 12:00:35 PM

hmmm. I doubt that...
I tried to use your modified kernels (cubehash, blakekeccak,bmw) and I mostly see no difference.
there are some variability in the result but on a medium/long run it goes down to the same values I get with the standard kernels...

If the values go down over time it meens that your cards are trottling, because of heat or too low voltage. On my gtx 970 the miner is mining 500KHASH faster than yours.

Release 62 standard clocks:

(the 980ti is clocked at 1260 on the core)

well, the argument isn't really relevant, if throttling happens it happens in the same way for every kernels (slow or fast), so if a kernel is faster it will remain faster no matter of any throttling and here it isn't the case...

(test was done using default clock and tdp target of 100%)

If a kernel is faster it probably also draw more power, which in turn means more heat so higher chance of throttling.
If an enhancement to a kernel has the same performance/watt ratio as the original, the card may throttle and bring the same performance using the same power but a lower clock speed.
I'm talking general as I don't know if it's valid for this specific case.

heat isn't really part of the equation, the 980 never runs hotter than 75°C (and currently are running at 71°C and the limit before throttling is the standard nvidia one 81°C), also the power hungry in this miner is lyra (well... the private one...) basically the other algo don't use a lots of power in lyra2re setup (keccak, bmw256 and blake are very fast algo and are used with a much smaller throughput than the one they can handle alone... so they is no big difference in power consumption in this setup