16 X 7990 @ 600 MH/s per GPU = 19200 MH/s
Come on you got to overclock it 4.1% more. I mean the 20Gh/s rig. That has to be worth nerd points if nothing else. Could this even be run from a standard household socket?? Assuming a 15 AMP breaker? That would make for one HELL of a space heater! |
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If you can get the system working we have some interesting numbers.
16 x 5970 @ 390 MH/s per GPU = 12480 MH/s
At the current difficulty and at a value of $4.8 per BTC would see break even in less than 6 months.
This includes $1200 for the system build and $400 per 5970.
16 X 7990 @ 600 MH/s per GPU = 19200 MH/s
At the current difficulty and at a value of $4.8 per BTC would see break even in 7 months.
This includes $1200 for the system build and $849 per 7990
It would be nice if it can be hashing before the halving.
Except you cant buy 5970s, and 7990s will be dropping in about 6 months.... so buy the 5970s now, sell them, and replace them with 7990s  Did you mean you CAN buy 5970's? |
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Using the beta allowed me to lower the clock.
So who deserves the bounty? I will honor the wishes of the forum!
The latest beta? If so, it looks like you would have got it done regardless (you suggested "the beta" before anyone else did)  I thought so too, but I did not want to be seen as suggesting that! |
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Using the beta allowed me to lower the clock.
So who deserves the bounty? I will honor the wishes of the forum!
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I dont understand why you dont just mine yourself and keep it and make the more money?
Looks like the other folks educated you already, but think about time value for a minute, you can figure it out. |
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Why not just use Afterburner?
Edit the MSIAfterburner.cfg
[ATIADLHAL]
EnableUnofficialOverclocking = 1
UnofficialOverclockingEULA = I confirm that I am aware of unofficial overclocking limitations and fully understand that MSI will not provide me any support on it
UnofficialOverclockingMode = 2
AccessibilityCheckingPeriod = 0
And your good to go.
I think you need to do this to the MSIAfterburner.cfg file. On my 6970s, I wasn't able to go to 685 until I modified this file. I am going to try the afterburner beta tonight and see if that works. |
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Yeah it would be interesting if you could test 300 memclock on the 7970 and if that is as effective as on the 5970s etc.
Try flashing BIOS and report back !
Without killing your card. Reference 7xxx cards are like the reference 6xxx cards. Without a change in the card firmware, they are locked to a minimum memclock related to the GPU clock. I believe you can only go 150 down without it resetting to stock speeds. And mucking about with the firmware this early in their release cycle could be risky. So why can I not get it to even go to 600 if 150 is the limit? |
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Terms:
-guaranteed 20,500 MH/s for 15 days
-Payouts every 2 days, with one final payment at contract expiration
-Expected payout of 224.70 BTC
-Price is 215 BTC
First come first served. Only selling one of these.
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I would like to avoid the fees of Ebay and Paypal, so I will offer them here. I have an offer on the table of 429 each to take all of them.
I will offer them for 95 BTC ea. + shipping.
95 BTC is $418. If you already have a higher offer, why are you trying to sell them at a lower price? Yochdog can be a dick sometimes, but he likes to try and sell his wares here for cheaper than he would on ebay as to give back and perpetuate the bitcoin community. That's why he's selling them here cheaper than on ebay. This. And it actually is not cheaper when you take into account Ebay and Paypal fees. |
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Why not just use Afterburner?
Edit the MSIAfterburner.cfg
[ATIADLHAL]
EnableUnofficialOverclocking = 1
UnofficialOverclockingEULA = I confirm that I am aware of unofficial overclocking limitations and fully understand that MSI will not provide me any support on it
UnofficialOverclockingMode = 2
AccessibilityCheckingPeriod = 0
And your good to go.
I would prefer to do it within CGminer |
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I am using CGminer on a dual 7970 mining rig.
I have the config file adjusted to load these settings:
Engine: 1150
Mem: 300
Intensity: 9
fan: 70
Using Windows 7
Everything works great, and they hash away at 690 MH/s each, but the damn memory clocks refuse to go to anything lower that 1,000. And they will only go that low after I manually set them within CGminer. Am I missing something?
2 BTC bounty to the first person who can help me out and successfully get my mem speeds to where I have seen them on other systems.
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fuck, updated the OP again with correct single card wattage.
OP - may be a silly question, but I haven't figured out how to get the voltage down that low yet.. what tool are you using? thanks! MSI Afterburner. Make sure you set overclocking mode to 2. where does one set the mode to 2? |
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Just got back from BFL's office.
Just gonna say... BFL SINGLES EVERYWHERE, yikes! Lots of shipping boxes, printed info sheets, units in various states of assembly, etc... From what I understand, several units have already shipped to interested parties, besides myself. I did not inquire as to who that might be.
Anyway, I got a slightly revised unit with bigger/more heatsinks and a new power supply unit. It's hooked up and running right now with CGMiner... I am told that the new firmware load exposes the temp of the chips, but that option is not yet available in cgminer. As soon as the codebase for cgminer is updated, you (I) should be able to see the temp of the core(s?). The current compile of Ufasoft is apparently not seeing the BFL unit, so I'm waiting on a new set of code for Ufasoft before trying it. I'm told that it will support hot plugging, which is fairly awesome.
I also saw a revised HSF that looks great for units going forward (Rev 2?) and should alleviate a lot of the heat issues people in hotter environments might run into.
I also got a bit more info on the Rigbox, which I'm not sure how much BFL wants me to share with regards to that... but suffice to say I understand now how the hashrate calculation is increased from the singles. It makes sense to me, but time will tell.
As of this post, I'll keep an eye on the hashrate and see how it sticks. I still need to move the unit to a different location, which I plan on doing tomorrow. Hopefully, though, it won't be overheating tonight.
Hey, so clear something up....are they really building these in an apartment, or is that simply BS? |
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Yes, I just got back from BFL's office with a new unit, PSU and firmware.
I've moved the unit, but my USB cable is too short, so I have to get one from the house to move the unit to where I want it. I did move it a bit to a cooler location, so we'll see if that solves the throttling issue for tonight.
That will be great to see (the cooler location). |
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Just wanted to throw my .02 cents in here.
I now have 7 of these bad boys up and running, and I think I have found a sweet spot for those running them enclosed in a case:
1150 core
600 mem
Cgminer
aggression @ 10
Fan @ 70%
688 MH/s, 75 degrees, rock solid stability.
I would love to throw a waterblock on one of these things and see how hard you can push them. I really don't think 800 Mh/s is out of the question.
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Time for a mid-month update!
Things are going great through the fist 20 days of January. We have generated revenue of just over 250 BTC, and should be able to easily exceed 350 for the entire month.
Capacity continues to grow beyond my initial expectations, with our peak hashing speed now sitting at 16,900 MH/s!! I know believe with some more opportunistic tweaking and GPU upgrades we can reach the magical 20,000 MH/s, truly putting us in the elite of hashing operations.
Now for the catch.....to hit these ever increasing hash rates, we have in the last 30 days purchased 4x 7970's, 2x 5970's, and one full mining rig capable over of 1,000 MH/s+.
These are obviously major expenses, and will keep our profits down for the next several months. I will amortize the expense over the next 4-6 months, in order to maintain our dividend at current rates. The upshot is that with the price of BTC seeing the substantial rise it has over the last 6 weeks, it takes much less BTC to purchase these upgrades than before!
Feel free to ask any questions!
Would it be possible to get an update like last month? Thnx Working on it! Been pretty swamped tuning up the shiney new 7970's, as well as re-jiggering rigs for more density. It is like a waterfall effect as GPU's filter down through the rigs, with the least efficient getting spit out. I will have an update at the end of this month that will lay out our plan for the next couple months, and recap the financials for the last 60 days. Stay tuned..... |
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I would like to avoid the fees of Ebay and Paypal, so I will offer them here. I have an offer on the table of 429 each to take all of them.
I will offer them for 95 BTC ea. + shipping.
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I am sure they never thought it could deliver 1.05 (remember it wasn't an estimate but 1.05 GH 2 digits of significant value) at 19.8W. That was simply a tactic to freeze out any sales of competitor products.
Which really cuts to the core of the issue, no? It does the entire BTC community a diservice. I imagine at least a couple enterprising individuals ceased developing their own products when they saw the "magical" specs for the bitforce. Flash forward 5 months and loe and behold the actual product is really not that much more efficient than a undervolted 5970. It is too bad, as the more options for FPGA there are, the better it is for all of us as the proverbial "consumer". I would love to announce a revolutionary vehicle I invented that gets 90 MPG (based on projections), at a price of $17,000. I would be inundated with pre-orders and have gobs of cash to then develop my product. Then when I actually delivered, and it only gets 63 MPG (not much better than a Prius), I would be thrown in jail for fraud. First of all, the car analogy is crap, since a Prius only gets good milage under a very limited set of circumstances. Any modern diesel is far superior to the current crop of hybrids as far as fuel efficiency goes. So comparing an FPGA to a car, you'd need to say XXX FPGA gets 250 MH/s only when you give it EXACTLY 121.742v, at 72F ambient temperature, with the fans spinning at 2311 RPM. Anything other than that, and it doesn't get those specs. It's ridiculous is what I'm saying. I very seriously doubt that any enterprising individuals were/are the least bit dissuaded by another FPGA entering the market. If anything, it would have spurned them to figure out how exactly it's done and copy the design... it would not put anyone off from developing their own product, that is just ridiculous. I have absolutely no idea how you are coming up with the statement that it's not much more efficient than an undervolted 5970... lets say, being super, extra, double sugar on top generous, you can power a 5970 with 250w... that gives you ~750 MH/s. The BFL unit does 800 MH/s at 85w... that is 1/3 the power for more MH/s. In what world, exactly, is that "not much more efficient?" In reality, you aren't getting a 5970 to 250w at 750 MH/s, just not happening, and this isn't even including the host system, which to be fair, the BFL unit basically requires as well.. however, you could load up a host system with more BFL units than you can 5970's, so it's more efficient in that area, too. Undervolted 5970 can get 5MH/W This statement is just laughable. You aren't getting a 5970 to spit out 750 MH/s for 150w... that is just a joke, right? Or are you, gasp, fudging your numbers to make them look legitimate, when they are, in reality, complete bullshit... just like you're accusing BFL of doing? Inaba, I am not making this a personal issue, and I think you would do well not to take it that way. I don't think the car analogy is crap at all.....BFL came out with projected specs that were wildly inaccurate in regards to both hashing power as well as power consumption. No one is asking that they be absolutely precise......but being off by 30% and 400% in regards to hashing and power consumption seems more than trivial. I am not trying to get into an argument over this, I just think they way they went about releasing their product is completely lame. Anyway, I hope you get a bunch of them, and they work out well for you. |
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I am sure they never thought it could deliver 1.05 (remember it wasn't an estimate but 1.05 GH 2 digits of significant value) at 19.8W. That was simply a tactic to freeze out any sales of competitor products.
Which really cuts to the core of the issue, no? It does the entire BTC community a diservice. I imagine at least a couple enterprising individuals ceased developing their own products when they saw the "magical" specs for the bitforce. Flash forward 5 months and loe and behold the actual product is really not that much more efficient than a undervolted 5970. It is too bad, as the more options for FPGA there are, the better it is for all of us as the proverbial "consumer". I would love to announce a revolutionary vehicle I invented that gets 90 MPG (based on projections), at a price of $17,000. I would be inundated with pre-orders and have gobs of cash to then develop my product. Then when I actually delivered, and it only gets 63 MPG (not much better than a Prius), I would be thrown in jail for fraud. |
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