I could downvolt eth only to use ~80w stock clocks, GPU-Z (not at wall, but same card so it's relevant). ZEC uses similar. If you downclock to say 1000MHz instead of 1260, you get same speed on Eth (zec suffers), but you can lower voltage another 100mv or more, chopping off perhaps another 20w (haven't tested yet).
Sure you can downvolt to that extreme but your hash per watt suffers past certain points. Anyways, good luck doing that 2 times a day per card if you're using the RX series if you're wanting to mine whatever is the most profitable. |
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How do you get 800watts from 5 r9-390's and still get 1250h/s?
Also you're forgetting power from the system itself.
A lot of people do not factor in power draw from the system itself. Once the cards start pulling lots of power, the motherboard pulls considerably more power as well. (there's a video on youtube somewhere showing that by using 2 PSUs, 1 for the motherboard/hd/etc and 1 PSU for the GPUs.. Was pretty interesting!) |
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You have a very good point there! I am rephrasing:
Also, the assumption would be that there would not be dual mining with ETH, ETH only. This includes using a dual miner in single mode.
What are the implications in the comparison of efficiency/functionality of the following Rigs:
A) 2 xfx R9 295X2 = ~$900 = ~1000W = 1120 SOLs ZEC; ~___W = 120MHs ETH
B) 6 RX 470s = ~$1100 = ~880W = 1120 SOLs ZEC; ~920W = 164MHs ETH
C) 5 R9 390 = ~$1200 = ~800W = 1250 SOLs ZEC; ~___W =____MHs ETH
I think all of details / presumptions are correct. This would lead me to believe, as it stands, that C would be the most efficient option...correct?
Even when not dual mining, ETH is still considerably higher than ZEC mining. Anyways, when you factor in depreciation, resale value, age of the cards and future coins / support, I (personally) would choose the 470's. Also keep in mind, 2gig cards can no longer mine ETH/ETC so their mining power is forced to go into ZEC (and 3gig cards later) so ZEC difficulty will continue to climb and become even more unprofitable. |
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Eth mining or dual mining? Eth only uses similar power at stock clocks, and you can downclock a lot, allowing significantly lower voltages, further reducing power.
You can downvolt as much as you want, ETH is always going to be considerably higher on on powerdraw than ZEC. |
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High asic quality 2014 = average asic quality 2015
How do you get to that logic? Same chip, one more year to get your production line run like it should. Eh? If you buy an RX480 now or in a years time, its still going to be an RX480 and ASIC quality is still going to be the same. |
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What are the implications in the comparison of efficiency/functionality of the following Rigs:
A) 2 xfx R9 295X2 = ~$900 = ~1000W = 1120 SOLs ZEC, 120MHs ETH
B) 6 RX 470s = ~$1100 = ~880W = 1120 SOLs ZEC, 164MHs ETH
C) 5 R9 390 = ~$1200 = ~800W = 1250 SOLs ZEC, ____MHs ETH
I think all of details / presumptions are correct. This would lead me to believe, as it stands, that C would be the most efficient option...correct?
You might want to check power usage numbers again when mining ETH as its considerably higher than when mining ZEC. |
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Why it needs to find out a link between Trixx and Claymore?
Whatewer, just use -d option to enable only one gpu at once, step by step - and you find it by gpu load, clocks and temps (GPU-Z, MSI AB, Trixx)
That's pretty much what i suggested in the first place isn't it  |
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High asic quality 2014 = average asic quality 2015
How do you get to that logic? |
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This must sound stupid but I can't find a f*ckin clue anywhere, and I can't believe nobody has made this question before: how do you identify a specific gpu from 6 identical cards in a mining rig? The only thing special about this card is 10ºC more in GPU temperature. You can't tell it apart with your hand obviously. Is there any option in Claymore miner that can help with that?
1. If you have RX 480 sapphire nitro cards - you can control LED lights on each card with latest Sapphire Trixx 2. with any other card - just set zero or max RPM of cooling fans for awhile in MSI AB or what you use. Do this when mining is stopped. RX480 LED controlling with Trixx won't help you in this case. (The order Trixx shows you isn't the order Claymore sees) |
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I must be really stupid but I can't see any difference between a fan at 50% and a fan at 100% on these cards.
Turn the other fans to 5% and you'll notice a difference. |
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This must sound stupid but I can't find a f*ckin clue anywhere, and I can't believe nobody has made this question before: how do you identify a specific gpu from 6 identical cards in a mining rig? The only thing special about this card is 10ºC more in GPU temperature. You can't tell it apart with your hand obviously. Is there any option in Claymore miner that can help with that?
A guy at work asked me the same question. The fastest method i suggested was to use Claymore to turn 1 fan to 100%. So easy to do on the fly and map your GPUs that way. |
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Yes but its just first ..remeber for LTC..first ASIC were laughable but then in just few months ASIC evolved and made GPYs obsolete
Don't count on that happening any time soon. ETH mining has been around forever and it doesn't have a ASIC for it. Edit: looks like i was wrong |
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Only reasonable meter is wall.
At the moment i'm testing 470x and 480x.
480x doing 177sols with 110w.
What is your 470's doing with undervolting? |
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yup even more impressive you can set the power limit down around -30 and still get around 260 h/s with i-4 and watage is down to around 120-130 watts
r9 nano and fury's in general are the undisputed kings of ZEC mining. Th00ber and Other fury experts tipped me off to this.
Let's see how long the ZEC price stays at this level. Remeber too that eth price is depressed right now, it could shoot back up to 12 at any news then all the hash runs back to eth , either way miners win Well, if ETH lands up being the coin to stay on, the Nano's aren't leading the RX cards by much. |
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yup even more impressive you can set the power limit down around -30 and still get around 260 h/s with i-4 and watage is down to around 120-130 watts
r9 nano and fury's in general are the undisputed kings of ZEC mining. Th00ber and Other fury experts tipped me off to this.
Let's see how long the ZEC price stays at this level. |
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Just thought I would share my benchmarking of the R9 nano.
All power measurements were done at the wall to be 100% accurate.
Benchmarks were done with Claymore ZEC - v8.0 (-i 4)
Stock:
1 gpu: ZEC: 272 h/s Watts: 200w
-100mV ROM
1 gpu: ZEC: 211 h/s Watts: 91w
-125mV ROM
1 gpu: ZEC: 217 h/s Watts: 90w
you are missing a -100 core undervolt benchmark for stock I couldn't do -100 undervolt on stock. The most it will let me undervolt is 75 and it made very little difference. |
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Just thought I would share my benchmarking of the R9 nano.
All power measurements were done at the wall to be 100% accurate.
Benchmarks were done with Claymore ZEC - v8.0 (-i 4)
Stock:
1 gpu: ZEC: 272 h/s Watts: 200w
-100mV ROM
1 gpu: ZEC: 211 h/s Watts: 91w
-125mV ROM
1 gpu: ZEC: 217 h/s Watts: 90w
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Just thought I would share my benchmarking of the R9 nano.
All power measurements were done at the wall to be 100% accurate.
Benchmarks were done with: Claymore ETH - v7.4 (not dual mining) & Claymore ZEC - v8.0 (-i 4)
Stock:
1 gpu: ETH: 26.8 h/s Watts: 205w
1 gpu: ZEC: 272 h/s Watts: 200w
-100mV ROM
1 gpu: ETH: 22 h/s Watts: 103w
1 gpu: ZEC: 211 h/s Watts: 91w
-125mV ROM
1 gpu: ETH: 22 h/s Watts: 84w
1 gpu: ZEC: 217 h/s Watts: 90w
What an amazing piece of hardware, thank you for the mods.
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Any miners using claymore v8 on an Sapphire rX-470 - Nitro edition - 8Gb Oc that are undervolting to get the best possible hash per watt ratio?
If so, would you mind telling me you stats (at the wall please, no hwinfo/gpuz figures).
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