You need to make some tests here.
I'm running 2x1070 with:
- TDP: 65%
- GPU: -200MHz
- MEM: +750MHz
Getting around 31-32MH/s from each of them (reported by the pool).

Afaik, for ETH only the MEM OC counts, I have seen 1070 cards downclocked to -400 on the GPU without any negative effect to the hashrate.

I have a GTX 1080 and I have mined ZEC (EWBF) until now (hashrate around 480-500 Sol/s)... however, the OC must be quite aggressive and the temperatures are north of 70C.
Now I moved to ETH (ethminer) and with the GPU downclocked -400 and the memory OC +600 I get 23.5 MH/s with the temps around 62C.

There's a big difference between these numbers - ZEC:3.64 USD/day, ETH: 2.67 USD/day (according whattomine), but I prefer lower temperatures and noise.

However I found out that both ewbf and ethminer let you play games - the hashrates, however, will go down drastically to about 50% during gaming time.

As for 31 MH/s - ETH, I assume - for GTX1080, there must be a mistake, there's no way to get there!

I have an Antec Nine Hundred - I got it for less than 50 bucks, second hand.
Man, that case is big! However, I can't get more than 3 GTX1060 cards (maybe 4 with some modding) in it and the air flow is not optimal so some of them are getting hotter.
But I don't have any space available in my apartment for a mining rig so it stays in my living. Heat and noise are an issue right now.

A rack would be much better from my point of view - improved air flow and temperatures, reduced noise - but I have to live with a case for now.

LE: I have removed the HDD rack from the 900 so it has plenty of space - at first sight, at least.

I'm using Zotac Firestorm for both 1060 and 1080... you have the option to increase or reduce the power for each GPU.
Going with +100-150 for GPU, +500 for memory and power at 75%.
Did not check/use MSI until now.

And I would say "Are you guys considering ETH price increase/decrease in the future?" as I don't see anyone able to tell you if it will go up, down or sideways ...

I'm on ZEC since 3-4 days, switching from ETH. (3xGTX1060 6GB + 1xGTX1080)

As there's no absolute way to compare the coins I refer both of them to BTC.
I was getting about 0.2 BTC per month from ETH. Right now I'm at 0.24 BTC from ZEC. (83MH/s ETH vs 1.4 KH/s ZEC).
So, for me the difference is about 20% in favor of ZEC.

I did not dual mine ETH-SIA, so I can't give you an answer on how it would compare... maybe the 20% difference can be covered with SIA, not sure.
But, afaik, if you dual mine, the ETH rate will go down a little bit, so the numbers will be different!
However, unless there will be a very big gap between the 2, on the medium and long term, I think nobody can tell you if ETH+SIA is better than ZEC or the other way around.

Is it possible to get the results from the api  (127.0.0.1:42000) for each change/record for the power and speed in a log file? If yes, what should I add to the .bat file (or .cfg)?

I want to check the effect on TDP change on the speed (power/speed) but from multiple time frames - like I would let it run 2 hours with TDP 70%, another 2 with 75%, 2 with 80% and so on and see all the records for each 2-hour interval.

Thanks

So, what you're saying is that I can go with +500MHz for memory and underclock the GPU... that would make the ETH hashrate go up - marginally, most probably - but the temperatures will go down!?

That sounds quite OK - from ETH point of view, at least.

Thanks, I'll give it a try.

I have 2 rigs - 3xGTX1060 and 1x1080.
While I'm mining ETH (genoil), the standard temps are around 70C for 1060 and 67C for 1080.
For ZEC mining (EWBF), they go up quite a bit - 77-78C for 1060, 73-74C for 1080.

I don't  change the setup between ZEC/ETH mining (same mem/gpu/tdp).

Anyone experienced this? Or there is something wrong on my side?

Thanks