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Author Topic: 1080Ti Specific - Best mining option  (Read 219992 times)
timeshifter
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July 20, 2017, 07:38:48 PM
 #701

Are you guys sure we can't change BIOS on 1xxx cards? Because forum like overclock.net is flooded with modded BIOS for different cards.
I'm certainly no expert, I'm just learning about all of this.  But, my understanding is that Nvidia encrypted the BIOS on these cards, whereas other cards you can download the BIOS in plain text or readable format.  So until someone figures out how to decrypt the BIOS of the Nvidia's then all bets are off.
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BellicoseBenny
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July 20, 2017, 07:56:42 PM
 #702

Yea I looked through some of those bios edits

Maybe there are good edits that would work well with mining. But nothing I saw over at overclock would be what we want.

Most of it is looking for more power draw and pure power not efficiency.
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July 20, 2017, 07:59:29 PM
 #703

How much power is needed for 6 x 1080 TI (EVGA)?

Would 1600w PSU be enough ?


at 70% to 75% TDP, it should be enough

The PSU will be enough, more than likely you'll flip your breaker if it's 15 amp if you have them all mining at 100% power.

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July 20, 2017, 08:13:08 PM
 #704

Are you dual mining with your 1080ti's or just zec?

coinzoid
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July 20, 2017, 10:54:32 PM
 #705

What is record speed for 1080ti on eht algo?

During my test it is 32 MH with default clocks on MSI GAMING X GTX 1080 TI. I think you shouldn't use your card to mine ethereum if you own 1080ti. Equihash is better then eth.

Do you mind to share your oc settings for zcash?
if i set a 70% Power limit i get only 615h/s, what do you suggest?


Power usage from wall: 190-200 watt (300 watt including other resources)
Sol: 635-640
Sol/Watt: 3.17
MSI Afterburner values:
Power: %75
Memory: -48
Core: -60

Maybe there are better optimizations out there. This is my first day with 1080ti.

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July 20, 2017, 11:41:15 PM
 #706

How much power is needed for 6 x 1080 TI (EVGA)?

Would 1600w PSU be enough ?


I can tell you 5 x 1080 ti's in a single system will run at ~1000W for just the CPU's at 85% power limit on a 1500W platinum PSU.
The rest of the system is only around 100W, and of course, you'll will need to extrapolate out your figures for a 6 X setup.

However, you will get spikes on mining start up that hit the full TDP of the cards and will be 5 x 250 = 1250W + ~100W for the system it self.
This box does crash using ccminer, and just reboots in the first few minutes of mining, but it is solid as a rock even when overclocked pretty far with EWBF



zero_sight
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July 20, 2017, 11:43:01 PM
 #707

What is record speed for 1080ti on eht algo?

During my test it is 32 MH with default clocks on MSI GAMING X GTX 1080 TI. I think you shouldn't use your card to mine ethereum if you own 1080ti. Equihash is better then eth.

Do you mind to share your oc settings for zcash?
if i set a 70% Power limit i get only 615h/s, what do you suggest?


Power usage from wall: 190-200 watt (300 watt including other resources)
Sol: 635-640
Sol/Watt: 3.17
MSI Afterburner values:
Power: %75
Memory: -48
Core: -60

Maybe there are better optimizations out there. This is my first day with 1080ti.




Please post actual numbers not delta ofsets of the Core/Memory

eg

TDP 85%
Core 1683
 - Curve 800mV to 850mV
Mem 5005
51degrees
timeshifter
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July 21, 2017, 06:02:10 AM
 #708

Looks like having a display attached affects the hash rate.

I've been experimenting with this tonight and discovered this.  It might be related to using a PCIe 1x riser or a slower older i3 processor vs an i7.  I'm using Nicehash and it's running Lbry and using ccminer.  About 486 MH/s on any card without a display attached and 433 MH/s with a display connected.

Anyone else see this performance hit?
BellicoseBenny
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July 21, 2017, 07:28:46 AM
 #709

Looks like having a display attached affects the hash rate.

I've been experimenting with this tonight and discovered this.  It might be related to using a PCIe 1x riser or a slower older i3 processor vs an i7.  I'm using Nicehash and it's running Lbry and using ccminer.  About 486 MH/s on any card without a display attached and 433 MH/s with a display connected.

Anyone else see this performance hit?

That seems prety high

I run 3 1080p screens and am getting 461 on lbry as we speak

~475 integrated graphics on the rig, ccminer

Seems like there is something more going on there than the display
BenScoobert
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July 21, 2017, 08:35:02 AM
 #710

Do any of you run your 1080ti miners at stock or overclock, or are you all underclocking?
BellicoseBenny
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July 21, 2017, 08:41:14 AM
 #711

I overclock the memory...With reductions in TDP I don't get anywhere near 2k on core tho

~1850 max

5500 very stable on the memory tho. Could probably go higher
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July 21, 2017, 11:37:25 AM
 #712

I overclock the memory...With reductions in TDP I don't get anywhere near 2k on core tho

~1850 max

5500 very stable on the memory tho. Could probably go higher


on eth only?
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July 21, 2017, 11:39:08 AM
 #713


What are the best drivers for the 1080ti's?  Is it the latest or does the community have  general consensus on a good release version?  I picked up two 1080ti's (asus strix oc).  I came from R9 Fury's (it was generally accepted that 16.3.2 were the best drivers for those, that's where I'm getting at, is there a preferred driver for the 1080ti's when it comes to mining... say particularly skein/myriad groestl)?

I've not found any noticeable difference

Thanks for the heads up.

does anyone know of a mining bios for the ti?

unless its a tweak bios from the manufacturer, it is a no for pascal cards. Nvidia would not want you to have access to the holy grail

Yeah been tweaking a bit, main problem I had at the beginning was a card would hang, windows reported a driver crash and recovery, but the primary card would go back to stock settings. I think it was down to a dodgy algo as even if I underclocked they did it, hasn't done it for a week or so now.

When a card crash it resets afterburner settings, likely it is your main gpu that's unstable. I guess it has to drive teamviewer or the monitor and is under more stress, so stability issues hits the main gpu first.

I also tried using mobo as primary display but it had a tantrum with all gfx cards in windows
miner14
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July 21, 2017, 12:26:34 PM
 #714

Nice Thread - yes I did just read all from the beginning - so thought I'd register, say hi, and tks.

One thing I was wondering, there are some posts concerned with efficiency (hash per watt),
is this because they are more interested in increasing immediate fiat returns?

For me personally I take the cards as far as possible with an eye on max mBTC return, even at lower "fiat returns"
Reason I do this is increasing BTC holdings is priority for me, Anyone else have thoughts on this?

Regards.
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July 21, 2017, 12:53:04 PM
 #715

Nice Thread - yes I did just read all from the beginning - so thought I'd register, say hi, and tks.

One thing I was wondering, there are some posts concerned with efficiency (hash per watt),
is this because they are more interested in increasing immediate fiat returns?

For me personally I take the cards as far as possible with an eye on max mBTC return, even at lower "fiat returns"
Reason I do this is increasing BTC holdings is priority for me, Anyone else have thoughts on this?

Regards.


for me my farm is a business, and if i lower my costs i increase my profits, so efficiency is very important for me, it makes the difference in 100's of $$ a month in power bills :/

everyones situations different, i have enough revenue sources for BTC i dont worry about increasing my holdings personally, i am ever expanding with my coins (saves me come tax time too hehe)

BenScoobert
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July 21, 2017, 08:18:45 PM
 #716

Nice Thread - yes I did just read all from the beginning - so thought I'd register, say hi, and tks.

One thing I was wondering, there are some posts concerned with efficiency (hash per watt),
is this because they are more interested in increasing immediate fiat returns?

For me personally I take the cards as far as possible with an eye on max mBTC return, even at lower "fiat returns"
Reason I do this is increasing BTC holdings is priority for me, Anyone else have thoughts on this?

Regards.


Predict a major rise post split in August?
BellicoseBenny
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July 21, 2017, 08:27:35 PM
 #717

Nice Thread - yes I did just read all from the beginning - so thought I'd register, say hi, and tks.

One thing I was wondering, there are some posts concerned with efficiency (hash per watt),
is this because they are more interested in increasing immediate fiat returns?

For me personally I take the cards as far as possible with an eye on max mBTC return, even at lower "fiat returns"
Reason I do this is increasing BTC holdings is priority for me, Anyone else have thoughts on this?

Regards.


It's power cost and also allows more cards on a circuit

it makes very little sense to jump your power bill up by 20% for 1% more hashing power or something

Better to just take that money and buy more coins

edit - also will significantly increase the longevity of your cards

edit 2 - and also reduces heat generated, which saves you money in teh summer from AC, increased longevity  from reduced temps too
BellicoseBenny
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July 21, 2017, 08:28:32 PM
 #718

I overclock the memory...With reductions in TDP I don't get anywhere near 2k on core tho

~1850 max

5500 very stable on the memory tho. Could probably go higher


on eth only?

I have been mining LBRY and MONA then trading it

Also mined Chaincoin for a while when it was profitable. (it's not and probably will never be again lol)

Also nicehash if the rates are good
miner14
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July 22, 2017, 01:08:01 AM
 #719

Thanks for replys, CJ, Ben and Benny.

I did some testing with average power draw, and average hash rate, over different power targets/OC a while back, using nicehash (so varying payrates)

http://i.imgur.com/SFeuuXO.jpg

It gets complicated rather quickly, but I do see your points

What I'm wondering is where to draw the line, pushing it for example, from 218mBTC to 239mBTC (720sols to 770sols) on one 80ti would actually cost more in electric, but gets more mBTC

Not too concerned about the longevity as 5y warranty, and I only have a few, so return and replace would not cost me anything significant downtime.
UK, so even now in July heat is not an issue. (cry)

More cards on a circuit, smaller psu's and other electrical concerns, yes totally understand that, things are different for us all.

My calculations are probably off, I'll have to try them again, or keep doing them as things change and adjust the power accordingly. There are a lot of variables, I'm kinda trying to reduce the complexity some.

Regards
dt8666
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July 22, 2017, 02:46:57 AM
 #720

Thanks for replys, CJ, Ben and Benny.

I did some testing with average power draw, and average hash rate, over different power targets/OC a while back, using nicehash (so varying payrates)



It gets complicated rather quickly, but I do see your points

What I'm wondering is where to draw the line, pushing it for example, from 218mBTC to 239mBTC (720sols to 770sols) on one 80ti would actually cost more in electric, but gets more mBTC

Not too concerned about the longevity as 5y warranty, and I only have a few, so return and replace would not cost me anything significant downtime.
UK, so even now in July heat is not an issue. (cry)

More cards on a circuit, smaller psu's and other electrical concerns, yes totally understand that, things are different for us all.

My calculations are probably off, I'll have to try them again, or keep doing them as things change and adjust the power accordingly. There are a lot of variables, I'm kinda trying to reduce the complexity some.

Regards


One consideration is pay more electricity now in exchage of the lower difficulty and potentially get more coins now. And also possible of mining more coin now with higher hashrate for future gain.

Could be a balance decision. It depends on how you play
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