FPGA
Investment: $2000
FPGA's: 5
Total Mh/s: 950
Monthly power cost at $0.12 for 45W: ~$4
BTC Payout: 0.9762 BTC/Day or ~30 btc/month
USD Payout at $2.70: $81
Monthly net revenue from $2000 investment: $77
Your BTC/month is almost 50% higher than the real earnings at these difficulty levels. They'll fall at the next change, but not enough to earn 30/month at 950 Mh/s. It seems to me that it won't fall this much unless the price falls even more. You're right.  Sorry about that. I pulled the wrong numbers so the output was too high for both FPGA and GPU. I have updated the calculations, which now shows that FPGA and GPUs are roughly equivalent at 8 cents/kWh, everything else being equal. |
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One A870U3 sold to hollajandro Thank you!  |
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I'll take your 5850. PM'd you
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Any plans to ever implement merged mining for namecoins. Should help keep miners from leaving on long rounds
+1 for merged mining! |
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Updated this thread, because I have a few more now SOLD OUT Biostar A870U3 (same as A870 but with USB 3.0 ports) Supports 4 GPUs http://www.newegg.com/Product/Product.aspx?Item=N82E16813138318All boards are like new (about six months old), work perfectly, and come with the original box, cables, etc. 2 years 6 months of warranty left. Asking $50 shipped, payable in BTC, MtGox code, or Dwolla Also, possible to do local pickup in Los Angeles.   |
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Still looking for a 5870's and Phenom X6 processors. Reply to thread or PM me if you're selling.
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Hey, Im all out of Pms. Call the number I gave you in the pm or give me yours and I'll call you. I will wait for you to show up. BTW: DATA CENTER?! we need to talk.
Thanks for an excellent transaction. I'll PM you with more details on the data center. |
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Sent you an email. I'll take both.
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Edited: Original calculations overstated BTC/day for both FPGA and GPU. Revised calculations show that FPGA makes sense at a much lower power cost.
It seems that the viability of this product rests completely on electricity pricing. If you compare FPGA to GPU with the same amount of money invested it appears (using round numbers) that somewhere in the range of 12 8 cents per kWh is where either solution is roughly equal in profit. If your power costs more than that, you're better off with an FPGA. If you can get cheaper power, go for GPUs.
As an example, let's say you invest $2000 into mining. With that, let's assume you could either buy 5x ZTEX FPGA modules or two GPU mining rigs with 8x GPUs.
FPGA
Investment: $2000
FPGA's: 5
Total Mh/s: 950
Monthly power cost at $0.08 for 45W: ~$3
BTC Payout: 0.6508 BTC/Day or ~20 btc/month
USD Payout at $2.70: $54
Monthly net revenue from $2000 investment (BTC minus power): $51
GPU
Investment: $2000
4-GPU rigs: 2 (each having 4 x Radeon 5850 GPUs producing 333 Mh/s each)
Total Mh/s: 2664
Monthly power cost at $0.08 1700W: ~$99
BTC Payout: 1.825 BTC/Day or ~55.5 btc/month
USD Payout at $2.70: $150
Monthly net revenue from $2000 investment: $51
Of course this comes with the standard caveats that BTC prices and difficulty will change and that you might be able to overclock GPUs and get even more Mh/s, etc. etc.. Also, if AMD can deliver on huge cuts in power consumption with the 7xxx series GPUs, the power indifference line will increase.
But, if you're considering investing in mining equipment and are looking at this FPGA or GPUs, your electricity rates may have already made the decision for you.
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Pretty sure he f'd us.  |
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Bought 5 GPUs and 2 CPUs so far. Still need several more. Reply to thread or PM me.  |
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Hi. I am looking to buy several of each of the following: * AMD Phenom II X6 1075T, 1090T, or 1100T (prefer retail version, not OEM) * AMD Radeon 5850 or 5870's (any brand except Asus, possibly Gigabyte) Reply to the thread or PM me if you have one or more of the above and are looking to sell. US buyer. Local purchase possible in Los Angeles. You'll find feedback on my past trades in the Trusted Traders thread: https://bitcointalk.org/index.php?topic=484.0 |
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I haven't received tracking information as promised. Was the card actually sent???
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Thanks for the tip on the relay. That's pretty cool. I might give it a try.
I have since swapped all of my Biostar boards for Asus boards. They all seem to work just with the bios setting, though I don't have to do it often. They're quite solid.
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Hi. I really like the new pool!  I have been mining during the past week and have four payments in the payment queue. When will the payments be paid? Thank you You can find your rewards here - https://pool.itzod.ru/payout_queue.phpFAQ about SMPPS here - http://eligius.st/wiki/index.php/Shared_Maximum_PPSso try to calculate how much new blocks should be sighed before you payments are done... now you have #25, 284, 382, 478, 562 positions in payout queue...just wait... I see now. Thank you! |
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Hi. I really like the new pool! I have been mining during the past week and have four payments in the payment queue. When will the payments be paid? Thank you |
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Has anyone used a Gigabyte GA-970A-UD3 (not the -D3 version, but -UD3)? Considering getting a few of those.
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