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  • crsminercrsminer Member Posts: 75
    My 6x970 rig pulls 1150W at the wall, overclocked to 1500/4000.
  • VaudreuilVaudreuil Member Posts: 15


    AMD 8370
    2 x evga 980 ti hybrids
    undervolted to 150w
    530 watts at the wall
    37 Mhs

    Basically just idling



    Don't know about the resale - any offers?
  • Marvell9Marvell9 Member Posts: 593 ✭✭✭
    edited May 2016
    crsminer said:

    My 6x970 rig pulls 1150W at the wall, overclocked to 1500/4000.

    1200 watts give or take = 5 amps
    180 watt per card
    My bigger issue though s the heat and the fact they can't be undervolted so I run them below stock

    Withoute SMI
  • blueboxbluebox Member Posts: 181 ✭✭
    Marvell9 said:

    They pull far more than 125 watts don't fool yourself a six gpu rig of 970 ftw editions or Asus Strx versions pulls 5 to 6 amps on a 240v circuit

    So that's closer to 175 watts or more per card

    Marvell9 said:

    crsminer said:

    My 6x970 rig pulls 1150W at the wall, overclocked to 1500/4000.

    1200 watts give or take = 5 amps
    180 watt per card
    My bigger issue though s the heat and the fact they can't be undervolted so I run them below stock

    Withoute SMI
    Need to take the 80% efficiency losses out of your numbers first; e.g. 1200W*0.8=960W total. Your system mobo/cpu/drives/fans are taking what, 30-60W so 900 to 930 which leaves 150 to 155W/GPU. I don't think a 20% difference in numbers is meaningless, any less than the "5 to 6 amps" range (on 240V no less!) you mention. I just can't believe the FTW's are that far above the SSC's anyway, given the boost clocks are only 2% higher and you say you're not running P0 state (3500+ mem) as I am.

    NOT getting on your back about this, just pointing out what's obvious to me but too many seem to overlook (and it causes needless/useless arguments). I'm an electrical engineer by field, HPC cluster admin by trade, so I think I know a few things about a few things... :D

    I'm running SSC's not FTW's, not running core overclock, just 3700 mem. Also I'm on 110V, not 240V, so my setup would technically be less efficient than yours — unless your PSU is worse on 240 than 120 which would be shocking to say the least.

    In other words, if your components need 960W to operate, then your 80% efficiency PSU needs to draw 1200W from the wall. If you know the power that your mobo/cpu/drive/fan components are drawing, then the GPU remainder is what's left. I know my system's power draw is 25W at idle, 35W when mining, so that leaves only the GPU's.

    So, 320W measured at the wall ([email protected]) and multiply it by my PSU's 0.8 efficiency (or best 0.85 at 50-70% load which it ain't, it's an 850W) and we have 256W (worst) or 272 (best) actual component power consumption before the PSU. Subtract the 25 or so watts for the "system" (25W at idle and cpu is barely anything when mining) so let's call it 231W (worst psu eff) or 247W (best). The gpu's are the only thing left chewing up this power; 115W or 123W each, take your pick. I'm being conservative at 125W for 21MH/s. If the clocks are left alone (3000 mem), they run at 93W apiece, 17MH/s.

    Power usage increases non-linearly with clock rates on most, if not all gpu's. Only way to beat it a bit is by undervolting (if you can) while risking instability. If you have a system with 6 of the highest-end FTW cards, I can see why they're taking more power than the SSC's, but hard to believe by that much. :)
  • Marvell9Marvell9 Member Posts: 593 ✭✭✭
    bluebox said:

    work said:

    syaoran99 said:


    I don't know I ran kombustor and that was what it showed me. 60% TDP load 100% and hashing at 20mH/s at 63 degrees stable.

    60% of TDP which is 110W means it's 66W

    Power *guesses* are highly useless unless you actually measure the at-the-wall power consumption with a kill-a-watt or similar. And what epoch was that at? I thought the GTX970 was hashing quite a bit less then 20MH/s.
    syaoran99 is completely off base, the TDP rates lie. And no 970 has a max TDP of 110W no matter what brand. In GPU-land, TDP is NOT based on the same computation as CPU; each manufacturer uses different methods to compute it. Look it up.

    I have two EVGA 970 SSC's, and when hashing at 21MH each (at the pool) o/c'd, they pull about 125W each. TDP shown is 75-80% in OCXScanner, temps at 70° with fans cranked. My total system power at the wall is 320W, mobo+cpu+etc take about 30W (nearly idle-speed power which is 25W), and the 80% efficiency psu accounts for the rest in losses. Period.
    You're full of it dude I have over 20 gtx 970s various brands as seen in my miner porn pics no card draws less than 175 watts to get 20+ Mhs even at low clicks the lowest I see at the wall is 150

    You're a damn liar
  • blueboxbluebox Member Posts: 181 ✭✭
    @Marvell9 Guess I just don't understand how you're accounting for power in your equation. You can't just attribute the PSU efficiency loss to the cards, as it appears you want to do. Bad EE practice.

    If you bought a fictitious 100% efficient PSU, you would see your total GPU & system consumption go down from 1200W (or was it 1440W?) to 960 or so, even though your actual GPU & system power usage would not change one bit. Hope you can see and understand that.

    I don't think you're a liar, just a little mistaken in your calculations, perhaps imprecise in measurements...
  • o0ragman0oo0ragman0o Member, Moderator Posts: 1,291 mod
    edited May 2016
    syaoran99 said:

    @syaoran99 Sorry where have you been harping on about eth appreciation? All I've seen you do is gloat about how you were so right about eth's drop in value over the last month. Now that the DAO sale presents a demand that any noob, including me, could predict you've simply just jumped ship.

    However, you've now 'predicted' that BTC halving will cause eth to dive. I would really love to hear your reasoning behind that one because it sounds like right BS to me.

    @o0ragman0o it matters not actually what you said. Because I'm on poloniex most of the time and people there are aware on what i've been harping away lol. I'm just here to say that there's nothing surprising regarding the increase in ETH value.
    @syaoran99 Which begs the question why you think you need to say it at all? Here's an apple. If you let go of it, it falls!
    syaoran99 said:


    However the difficulty rise will be sure to follow right after. Right about the time ETH start to crash in conjunction with BTC halving. The difficulty rise is always a bit slow in relation to the ETH price because people who buy new gear at the sight of Price rise will only just miss out on it(payment clearance + delivery time + setting up takes time). That's always been the case.

    More misunderstood BS. Look at the charts. Diff has been in linear growth for the last two months. That growth faulted a bit last week until some big ass mines came online. I'll say it'll falter again this month regardless of the DAO sale.
    syaoran99 said:

    Well reason being ETH and BTC prices are directly polar opposites at this point.

    WAT? WTH are you talking about? maybe I could hand you polar coordinate system but doesn't change the fact were on a "1 dimensional" number line.
    syaoran99 said:

    I've mentioned time and again that the amount of money circulating in the crypto world is but the money of the same few people. Not much newer people are coming into crypto. So basically they're just transferring money from one crypto to another. Whichever makes more money and steals from each other. That's basically it. So if BTC goes up the money that gets pumped into it will have to come from somewhere, significantly from ETH in this case as a majority of ETH money came from BTC refugees anyway. That's my reasoning. We shall see if I'm right. This much I've harped in the forums as well since my initial posts that drew fire from the community here.

    Except for the glaring fact that you've completely ignored fiat market conversions. Crypto is not a closed systems and Ethereum in particular in not bonded to BTC. I agree there are BTC 'refugees' and said so months ago, and there will be a lot more after BTC halving including Craig White who has indicated he'll be sell off his $440m worth 'slowly' so as not to dump BTC value too much.

    Add to this that the DAO has now locked away 1.7% of Ether supply in just a few days with 3 1/2 weeks funding to still go.

    This will all put a far greater upward pressure on ETH value.
    But anyways it doesn't matter what anyone thinks I'm just speaking my mind. It's my own opinion and self glorification that I'm doing for my self esteem by saying "i told you so". I don't see that as an issue/crime.
    No crime, it's just offensive, annoying and entirely counter productive to continually make public displays of retrogressive confirmation bias in failed attempts to bolster your inadequate self-esteem issues. Self confidence is your own business and grows much quicker with a closed mouth.

  • Marvell9Marvell9 Member Posts: 593 ✭✭✭
    bluebox said:

    @Marvell9 Guess I just don't understand how you're accounting for power in your equation. You can't just attribute the PSU efficiency loss to the cards, as it appears you want to do. Bad EE practice.

    If you bought a fictitious 100% efficient PSU, you would see your total GPU & system consumption go down from 1200W (or was it 1440W?) to 960 or so, even though your actual GPU & system power usage would not change one bit. Hope you can see and understand that.

    I don't think you're a liar, just a little mistaken in your calculations, perhaps imprecise in measurements...

    Come on man any serious miner is running on 240 volts and at least platinum or server type psus

    I just roll my eyes when ppl get into theroretical calculations with less than 90% efficient power supplies

    If you are running hardware 24/365 like a server or say a ...miner you're crazy not to run server or platinum quality power 10% power wasted over even a month is a significant waste of $$

    So to your point my numbers are correct for my server 96% psus and all my EVGA 1000 platinum supplies.

    You're whole answer is based on a fallacy no real miner uses 80% or bronze power supplies lol
  • syaoran99syaoran99 Member Posts: 204

    syaoran99 said:

    @syaoran99 Sorry where have you been harping on about eth appreciation? All I've seen you do is gloat about how you were so right about eth's drop in value over the last month. Now that the DAO sale presents a demand that any noob, including me, could predict you've simply just jumped ship.

    However, you've now 'predicted' that BTC halving will cause eth to dive. I would really love to hear your reasoning behind that one because it sounds like right BS to me.

    @o0ragman0o it matters not actually what you said. Because I'm on poloniex most of the time and people there are aware on what i've been harping away lol. I'm just here to say that there's nothing surprising regarding the increase in ETH value.
    @syaoran99 Which begs the question why you think you need to say it at all? Here's an apple. If you let go of it, it falls!
    syaoran99 said:


    However the difficulty rise will be sure to follow right after. Right about the time ETH start to crash in conjunction with BTC halving. The difficulty rise is always a bit slow in relation to the ETH price because people who buy new gear at the sight of Price rise will only just miss out on it(payment clearance + delivery time + setting up takes time). That's always been the case.

    More misunderstood BS. Look at the charts. Diff has been in linear growth for the last two months. That growth faulted a bit last week until some big ass mines came online. I'll say it'll falter again this month regardless of the DAO sale.
    syaoran99 said:

    Well reason being ETH and BTC prices are directly polar opposites at this point.

    WAT? WTH are you talking about? maybe I could hand you polar coordinate system but doesn't change the fact were on a "1 dimensional" number line.
    syaoran99 said:

    I've mentioned time and again that the amount of money circulating in the crypto world is but the money of the same few people. Not much newer people are coming into crypto. So basically they're just transferring money from one crypto to another. Whichever makes more money and steals from each other. That's basically it. So if BTC goes up the money that gets pumped into it will have to come from somewhere, significantly from ETH in this case as a majority of ETH money came from BTC refugees anyway. That's my reasoning. We shall see if I'm right. This much I've harped in the forums as well since my initial posts that drew fire from the community here.

    Except for the glaring fact that you've completely ignored fiat market conversions. Crypto is not a closed systems and Ethereum in particular in not bonded to BTC. I agree there are BTC 'refugees' and said so months ago, and there will be a lot more after BTC halving including Craig White who has indicated he'll be sell off his $440m worth 'slowly' so as not to dump BTC value too much.

    Add to this that the DAO has now locked away 1.7% of Ether supply in just a few days with 3 1/2 weeks funding to still go.

    This will all put a far greater upward pressure on ETH value.
    But anyways it doesn't matter what anyone thinks I'm just speaking my mind. It's my own opinion and self glorification that I'm doing for my self esteem by saying "i told you so". I don't see that as an issue/crime.
    No crime, it's just offensive, annoying and entirely counter productive to continually make public displays of retrogressive confirmation bias in failed attempts to bolster your inadequate self-esteem issues. Self confidence is your own business and grows much quicker with a closed mouth.



    How my self esteem grows won't be dictated nor affected by how you think it's best to grow nor how you want it to. If it's annoying then so be it. Honestly you have a choice to skip my posts lol. Nobody is to blame but the person who wants to pick on it. It takes two hands to clap.

    That said, I'm not here to argue with you about the specifics. To me graphs are only accurate to a degree. Everything else depends on, on the go happenings. And known information with predictions on how others are going to react. So imo, btc price rise due to halving and btc halving refugee event afterward are the key price makers here. Both having ETH dump while BTC pumps and vice versa during this period.

    So you do what you like. I've said my fill on the issue and we shall see if I'm right about it. I can't be bothered wasting my time typing long responses anymore lol. It won't stop me from saying I told you so.
  • dlehenkydlehenky Member Posts: 2,249 ✭✭✭✭
    Is this thread devolving into a trashcan?
  • HelioxHeliox Member, Moderator Posts: 634 mod
    dlehenky said:

    Is this thread devolving into a trashcan?

    It sure is :p

    The thing is, if you only read the title "It's starting".. you could talk about really anything :D

    It's starting.. to get out of hand..
    It's starting.. to get ridiculous..
    It's starting.. to get boring..

    And so on..

    To be honest, i only read your post, the ones above you, nah, not starting to read those.. ;-)
  • dlehenkydlehenky Member Posts: 2,249 ✭✭✭✭
    @Heliox The OP was about a large farm looking to sell off their GPUs.
  • HelioxHeliox Member, Moderator Posts: 634 mod
    dlehenky said:

    @Heliox The OP was about a large farm looking to sell off their GPUs.

    @dlehenky i know, i know :p
  • blueboxbluebox Member Posts: 181 ✭✭
    Marvell9 said:


    I just roll my eyes when ppl get into theroretical calculations with less than 90% efficient power supplies
    [...]
    So to your point my numbers are correct for my server 96% psus and all my EVGA 1000 platinum supplies.

    You're whole answer is based on a fallacy no real miner uses 80% or bronze power supplies lol

    @Marvell9 I never ever said I was a "professional miner", whatever that is by any meaningful let alone accredited definition. My profession is HPC; I deal with systems well beyond your reach and understanding, but am I going to use my "profession" to disparage you? No, that would be just as silly. I'm also not about to sink tens of thousands of dollars into "mining-grade hardware" to obtain digital bits of specious value... Me, I'm perfectly happy using harware I have and can use for purposes other than mining, as unpalatable as it is to you, a "professional miner". I stopped mining on my workstation and game box earlier this month, and I'm about to trade all my eth in for "fiat" that I can live off of. Sell to the greater fool and don't look back, I say.

    (Love to see how you're pulling 5-6A @ 240V on a 1KW PSU, though. Still a bit shaky on your details, I see. What you call a server and what I call a server are very different things, apparently.)

    This will be my last post on the forum, so don't worry about another response; I'm quite finished with ethereum.
  • Marvell9Marvell9 Member Posts: 593 ✭✭✭
    edited May 2016
    bluebox said:

    Marvell9 said:


    I just roll my eyes when ppl get into theroretical calculations with less than 90% efficient power supplies
    [...]
    So to your point my numbers are correct for my server 96% psus and all my EVGA 1000 platinum supplies.

    You're whole answer is based on a fallacy no real miner uses 80% or bronze power supplies lol

    @Marvell9 I never ever said I was a "professional miner", whatever that is by any meaningful let alone accredited definition. My profession is HPC; I deal with systems well beyond your reach and understanding, but am I going to use my "profession" to disparage you? No, that would be just as silly. I'm also not about to sink tens of thousands of dollars into "mining-grade hardware" to obtain digital bits of specious value... Me, I'm perfectly happy using harware I have and can use for purposes other than mining, as unpalatable as it is to you, a "professional miner". I stopped mining on my workstation and game box earlier this month, and I'm about to trade all my eth in for "fiat" that I can live off of. Sell to the greater fool and don't look back, I say.

    (Love to see how you're pulling 5-6A @ 240V on a 1KW PSU, though. Still a bit shaky on your details, I see. What you call a server and what I call a server are very different things, apparently.)

    This will be my last post on the forum, so don't worry about another response; I'm quite finished with ethereum.
    I never said i was pulling the full 5 amps from the 1k power supply, i use the power supply to power 3 cards max and the USB risers and then connect the other 3 Power supplies to the IBM 2880 power supply using jabberwok long 300watt PIC-E cables

    the 2880 watt PSU's are 96% efficient.

    @bluebox I wasn't trying to disparage anyone, i just know for a fact that 970 cards do not pull less than 180 watts at full power the misinformation here just bugs me why? :

    because I bought all my 970 cards based on wrong information of people like @bluebox claiming the great power efficiency and low temps on the 970 cards and I basically wasted my money.

    In real life looking at the PDU and my power bill i know for a FACT what they actually pull not to talk of the heat issues. I would rather buy a 390x or nano and pull the same or less wattage via undervolt/underclock and the same level of heat and get 28 mhs vs the 21 from the 970s AND

    the AMD cards can dual mine dcred at the same time.

    I'm in the proccessed of selling my 970s all 24 or them why would i do that if they were so great.

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