Topic: CCminer(SP-MOD) Modded NVIDIA Maxwell / Pascal kernels. - page 1091. (Read 2347601 times)

I forgot to add the idle watt. The card use 7-10watt idle..

I have implemented --gpu-memclock and --gpu-engine parameters in ccminer now.
Will messure the watt and get back to you.

in general, overclocking should bring better power efficiency, unless its effect is counterbalanced by automatic or manual overvolting, or by additional power draw from the cooling system (fans).

Those figures cannot possibly be right. The Gainward card you've mentioned also have a TDP of 60 watts regardless of 6-pin or not (source). The PCI-E slot can provide 66W alone (5.5A on the 12V rail and 3A on the 3.3V rail). Additionally 6-pin can provide 75W and 8-pin can do 150W. The 38.5W TDP figure from the BIOS doesn't mean what we thought it would. Non-powered cards can pull 60 watts as well with stock BIOS. I both have ASUS and MSI non-powered cards and they do pull 60W. Besides, wherever you look even gaming benchmarks show close to 60 watt usage for all 750 Ti's.

Increasing the TDP should have zero effect for stock clocks, all it does is give headroom for overclocking. And in my case at least, overclocking is always more efficient as in it always scales better than power consumption. For example +150 Mhz on the core is 12% gain in hashrate and 11% increase in power consumption at the wall for x11, and it's +10%/+7% for quark and so on. Conversely, with downclocking the efficiency gets worse.

with my gigabyte 750ti cards, (has an extra 6-pin), using release 50 on quark, it takes an extra 80 MHz of overclock to reach 6.0 MH/s . +200 MHz gets me to 6.5 MH/s. anything past that and the miner will crash.

wish i could find those gainwards. google and newegg come up dry. but i do have my eye on some evga 750ti cards, as they seem to get a bit more hash, and are now cheaper to boot.

i can also confirm SP_'s power increase. From stock clocks (5.5 MH/s) to full OC (6.5 MH/s) there is about a 15 watt increase per card.

I have no idea how I got the power figures above but I'll try again.

At 50 W a 750ti will burn 50*24*365 watts hours in a year, or 438 KWH. The cost of the card will get
you 4.1 years of power for it.

A 400 W rig with 1 750ti would burn 350 KWH so $180 would only last about half a year.

Even a 6 x 750ti rig has about 50% power overhead so tweaking the power efficiency of the
miner would have little impact on overall power consumption. More hash is always better.

My power numbers are wrong. I worked it backward and came up with about 4 years. I'm tired,
will figure it out tomorrow.

I did a hash/price(cad) comparison and the 970 is definitely in the sweet spot Table below). The hash rate
seems to scale linearly with the number of cuda cores, even between the sm 5.0 750ti and the sm 5.2 9xx
series cards. I would have expected the 9xx cards to provide more hash at lower power and I have no
clue why the 750ti is more power efficient. Maybe cuda 7 will show more improvement in sm 5.2.

Consider the time it would take to burn enough power to equal the cost of a card with the 750ti
and 50 watts as an example. The card goes for around CAD 180 and I'll assume CAD 0.10 /KWH
for electricity. $180 would pay for 1800 KWH (1800000 WH).

At 50 W the 750ti would have to run for 1800000/50 hours, or 98 years to spend the same on power
as the cost of the card. Even including the power for a rig with just 1 750ti, about 400 W, would have
to run for 12 years for the power burned to equal the card's cost.

I've never really understood why there is so much attention paid to power consumption when the
cost of the equipment is so much more significant. The only time the GPU cost isn't a factor is for
gamers who already have the HW. Serious miners don't have another use for their HW.

Just my thoughts on the subject.

Here's the full comparison:

980     = 25.7 Kh/s/$
970     = 39.7
960     = 36.0
750ti   = 33.3
TitanX = 22.5

I won't be buying a TitanX anytime soon.

was that the special edition? ...

i heard that they brought out a superclocked version - but couldnt find it anywhere to be purchased easily ... at least not here in australia that i know of ...

what are the hashrates for the algos that are mined? ... like x11 and quark and such ... if you have tested it on different algos of course ...

#crysx

+1 ...

exactly ...

#crysx

ive spoken to the dev at minsty a bit ( as I have the use of the minsty mining quite a bit ) - with both bug reports and suggestions to improve ( like fixing the hashrate readout and working with westhash / yaamp stratums ( which dont work at all - so dont point your miners to those sites using mintsy - you will lose your hashes ) and allowing extensions to mine times and api implementations that have a lot more than just stats - and choice of internal coincs which are limited at the moment - etc ) ...

they only just come out of beta a couple of weeks ago - which surprised the hell out of me as they still have quite a few bugs to iron out - but overall its quite a pleasant experience ...

the dev said that there will be quite a few implementations that are needed to be done there - but they are slow at it due to the amount of bugs they needs to squash and the features to implement ... lets see how they go ... it would be a nice place to 'park' the the farm as it implements a great deal of the features we have been looking for in a multipool ... BUT its still in its infancy - so i wouldnt expect too much out of them at the moment ... which is why the farm is split on there into a few parts - to be able to rent out the farm and still mine at the same time ...

yaamp was doing a massive job with drop outs and reconnects i see ... and it seems it was only quark ... the donation link for quark had in excess of 100 connections - and was bombing out with errors / extranonce issues almost every block ... westhash / nicehash was not that much better ... the donation links were being disconnected completely - for all algos implemented - with no reason why - and wouldnt allow a reconnect ... ill send a support email to ask some time today and see what they come back with - unless someone else already has ...

the only other 'descent' multipool that we use is coinking ... but unfortunately - they are slow in fixing issues and even responding to support queries - have been for quite a few months now ... they used to be fairly on the ball earlier last year ...

most seem to be going that way - which is why we setup our own granitecoin pool ... so no issues with waiting for others to do anything about issues or updates or the like ... just wanted something simple that just worked ...

we would have no issue helping hosting / funding / setting up a pool like mintsy or coinking or a combo of the two with yaamp and westhash / nicehash in the mix ... have a massive multipool with everything we need  (which i think is what mintsy is trying to setup ) ...

too many 'nice' places have shut down ... not enough cashflow in the fiat world i guess ...

#crysx

I have one by gigabyte  crysx that is factory super overclocked and it's gpu clock reads 1350  750ti sweet spot. Of course it doesn't need to be oc any more.

I think yaamp needs to be rebuilt from the bottom up...and 1% pool charges...not 10% 

Me too. It seems the connections kept dropping but yaamp didn't reset them.
Now yaamp is completely down and has been or over an hour. I expect better considering their fees.
Nicehash is also having some issues, I haven't received toady's payout yet and their web site is also
down at the moment.

Yaamp just came back up but it's still having problems, lots of disconnects and rejects on quark.

There aren't many multipools that provide an API. Trademybit is long gone, I tried Globalhash but they
disappeared in less than a week. I have no idea Whether Mintsy has an API because the admin refuses
to provide any info. His reply to my query was flippant and insulting in its evasiveness. Nicehash and
yaamp seem to be it.

Yeah...I had about 30 miners. It was kicking me and reconnecting showing it as a new miner. I just quit it altogether. I think yaamp may be ready to crash again. Seems they can't keep it going over there.

Thank You also, thought I may try mining XMR.

@crysx

This seems to be probleem with quark on yaamp. I am the only one mining to this address but it shows 105 miners. Also total quark miners rose to 32K & hashrate dropped to 100 Mh/s, when miner started throwing bad shares with "Invalid job ID" and finally miner was not able to connect with the pool.

Nist5 is back at yaamp. A little speed test with an
   EVGA GTS 750ti SC (LP no aux pwr) stock,
   ccminer 1.5.50 default parms
gave me 9400 Kh/s.

Same card gives 6050 Kh/s on quark.

I am getting 55-60 h/s per core while using minergate miner for mining BCN,XDN,XMR. I have a i5 4670 @ 3.4Ghz. Power consumption per core seems to rise by 9 watts, that is 6-6.5 hashes/watt.

Thanks! They call it 'TurboMode' for the OC. I think it depends on the MOB tho. Doesn't matter, I'm not messing with the speed.

edit; I see the youngsters are at it again.

Soo... how many times have you been done with me? I wish I had integrity like you. <3

Oh I'm done with you too! Now I'm going to storm off, but not really and respond to you shortly here after, I'll mention that I'm a great person too because I'm done with you.

If you have a four year bachelors call me silly. You remind me of someone who is 17-18 with their parents credit card who are your 'investors'. For instance apparently you still have a rig of 280x's... Unless you have really cheap power, it hasn't been profitable to mine with them for quite some time.

Also as I mentioned, it wasn't that I wasn't willing to pay for a private miner, just they never publicly announced that there was one available for purchase (unlike what SP has been doing in the thread). Everytime I brought up the weird hashrates people were commenting that they were using their cards as space heaters.

The lack of transparency and the eventual monetary loss of a lot of small miners was what I had issue with.


Weird whenever I've brought up power efficiency I've been met with criticism by other kernel devs that said it's impossible to run things more efficiently. Interesting.

Also props to you, it's all about the watt/hash efficiency levels until the price of BTC goes up.


Also weird as you're one of the people who said efficiency was very impractical and not worth your time (back in Nov).

See this thread: https://bitcointalksearch.org/topic/if-you-optimizemake-kernels-854903


MSI Afterburner works for me to increase fan speeds. I don't use nix though.