[4+ EH] Slush Pool (slushpool.com); Overt AsicBoost; World First Mining Pool

[Malawi]

Pool skipped storing the block #237278, unfortunately the monitoring didn't woke me up at night. To fix it and be as fair as possible, I added the block reward into round 18141 (closed by block #237286) and recalculated block rewards. That's the reason for such high block value of #237286 ...

just quoting where Slush explained why the payout is higher on this block

Thanks. Was just wondering about that one.

[goatmonkey]

Anyone else having issues with blockchain.info right now?

[sgbullion]

Anyone else having issues with blockchain.info right now?

nope keeps doing the same thing as always, confuses me and gives me a head ache no problem. 

[kanta]

Anyone have experiences with those?

https://bitcointalk.org/index.php?topic=195540.60

There are other group buys but I'm looking at this one since it is EU and relay low price.

Hmm...

Presently at Slush I get approx. 0.002BTC@~600MH/s at each block (averaged). We find around 16-18 blocks per day.
Assuming I were to pay 2.2BTC for this usb 'block eruptor' I would be looking at:

2.2 / 0.001 / 17 = 130 days to break-even, assuming network difficulty remains as-is, which it WILL NOT.

Because estimates of rate of difficulty increase vary wildly I hesitate to _speculate_ further, but it seems to me that there is a possibility this buy will not pay for itself in a reasonable time frame.

There are two more things to consider - let me use some examples:
- I have 5850 cards which use about 80-85W to produce roughly 300MH (or say it the same as that USB key). Here is the USB key advantage - it uses 0.5W.
- I got my cards at $120-150 each. Some are on dedicated mining rigs, some are used for gaming. At the end of the day I can sell those and recoup some of my investment.

My observations about payout are similar to mrm0's - with one rig at 900MH/s my average is about B 0.035-0.04/day (depending on luck). Or it will pay itself off in about 160-200 days (at current difficulty levels).
A GPU card (priced let's say 1.1BTC at current levels) making the same 300MH/sec minus price of electricity (2KW@$0.15=$0.3 or B0.0025) will bring you B 0.01/day or given the same presumptions will pay itself off in 100 days.
So, after the same 200 days each of those cards will pay itself and bring me about $120-150 profit + I can sell the cards for let's say $75 = total profit $200/card.

I'm over-simplifying it but you get the idea.

Bottom line is - if you're just now entering the mining world it is probably not worth the money as there are better alternatives.

EDIT: See this site for calculating the break-even duration: https://bitclockers.com/calc

I agree. I just got into mining, and I even upgraded the GPU in my PC to a 7970 with the intent of mining faster than my GTX 670 could do. However, I didn't buy the card (nor assemble the computer) for the sole purpose of mining, and at the end of the day, I have a badass gaming rig that I can play any game maxed out, which is why I built my rig in the first place. I'm not worried about making my investment back, so long as I don't spend more on electricity than I make mining, which I am currently doing pretty good at (700 MH/s).  That and the 7970 came with 3 games that I had really been wanting to play.

[ewitte]

I don't mind the electrical usage where my main miner is but what gets me is the nightly AC shutoff.  I'm struggling to keep it stable at night now that summer is starting.

[pikeadz]

Holy cow.  6 blocks in an hour yesterday... 4 blocks in the last hour.  Is this typical?  I've only been mining bitcoin for the past 5 days.  I am thinking this is not typical and it will even out with some unlucky days, but right now I am amazed at the returns I am getting in relation to the profitability calculator.

[ewitte]

Not typical but its a wide # I've seen less than 10 and more than 30.

[Lucko]

Anyone have experiences with those?

https://bitcointalk.org/index.php?topic=195540.60

There are other group buys but I'm looking at this one since it is EU and relay low price.

Hmm...

Presently at Slush I get approx. 0.002BTC@~600MH/s at each block (averaged). We find around 16-18 blocks per day.
Assuming I were to pay 2.2BTC for this usb 'block eruptor' I would be looking at:

2.2 / 0.001 / 17 = 130 days to break-even, assuming network difficulty remains as-is, which it WILL NOT.

Because estimates of rate of difficulty increase vary wildly I hesitate to _speculate_ further, but it seems to me that there is a possibility this buy will not pay for itself in a reasonable time frame.

There are two more things to consider - let me use some examples:
- I have 5850 cards which use about 80-85W to produce roughly 300MH (or say it the same as that USB key). Here is the USB key advantage - it uses 0.5W.
- I got my cards at $120-150 each. Some are on dedicated mining rigs, some are used for gaming. At the end of the day I can sell those and recoup some of my investment.

My observations about payout are similar to mrm0's - with one rig at 900MH/s my average is about B 0.035-0.04/day (depending on luck). Or it will pay itself off in about 160-200 days (at current difficulty levels).
A GPU card (priced let's say 1.1BTC at current levels) making the same 300MH/sec minus price of electricity (2KW@$0.15=$0.3 or B0.0025) will bring you B 0.01/day or given the same presumptions will pay itself off in 100 days.
So, after the same 200 days each of those cards will pay itself and bring me about $120-150 profit + I can sell the cards for let's say $75 = total profit $200/card.

I'm over-simplifying it but you get the idea.

Bottom line is - if you're just now entering the mining world it is probably not worth the money as there are better alternatives.

EDIT: See this site for calculating the break-even duration: https://bitclockers.com/calc

I agree. I just got into mining, and I even upgraded the GPU in my PC to a 7970 with the intent of mining faster than my GTX 670 could do. However, I didn't buy the card (nor assemble the computer) for the sole purpose of mining, and at the end of the day, I have a badass gaming rig that I can play any game maxed out, which is why I built my rig in the first place. I'm not worried about making my investment back, so long as I don't spend more on electricity than I make mining, which I am currently doing pretty good at (700 MH/s).  That and the 7970 came with 3 games that I had really been wanting to play.

Well I didn't ask if it is worth buying I asked if anyone have it. And there are errors in calculation. 5850 never uses only 80 to 85W. It uses 150W at stock and 165 to 191W at 300. Look at https://en.bitcoin.it/wiki/Mining_hardware_comparison There are some errors but you can notice them at once.

And I know it is overpriced but this one you can get right away. I know I can get BFL 5.5 for 2BTC but when? This year? Next? I know I can get Block Erupter blade for 50BTC and the same Ghash rate with Block Erupter USB would cost 80BTC. I know that Block Erupter blade is also to expansive so USB is even more. But saying all that I don't have 50 BTC and I don't have money to buy them. And probebly with the same logic it doesn't pays out to have it. So this is cheap alternative to get ASIC. So it is not question if I will buy. It is only question if someone have it to report how it works?

[valladex]

lady luck is here.. yippee
-and then the pools hashing power goes up and rewards go down.

[Paulizei]

I don't mind the electrical usage where my main miner is but what gets me is the nightly AC shutoff.  I'm struggling to keep it stable at night now that summer is starting.

I agree. I just got into mining, and I even upgraded the GPU in my PC to a 7970 with the intent of mining faster than my GTX 670 could do. However, I didn't buy the card (nor assemble the computer) for the sole purpose of mining, and at the end of the day, I have a badass gaming rig that I can play any game maxed out, which is why I built my rig in the first place. I'm not worried about making my investment back, so long as I don't spend more on electricity than I make mining, which I am currently doing pretty good at (700 MH/s).  That and the 7970 came with 3 games that I had really been wanting to play.

That's why I love and hate our electricity Providers over here in Germany: It's stable as hell (and of course green [regional wind power only]) but they ask about 0.30$ per kWh!

So in terms of ROI GPU mining does almost never pay...

[ewitte]

At 50BTC your around $5500 a bit steep for 10-14GH/s.  I wouldn't mind some kind of lite version maybe 2GH/s?  BTC in general is pretty bad right now for people just starting out.

[ewitte]

That's why I love and hate our electricity Providers over here in Germany: It's stable as hell (and of course green [regional wind power only]) but they ask about 0.30$ per kWh!

So in terms of ROI GPU mining does almost never pay...

My main miner is at work I'm sure you can do the same in Germany

[Paulizei]

That's why I love and hate our electricity Providers over here in Germany: It's stable as hell (and of course green [regional wind power only]) but they ask about 0.30$ per kWh!

So in terms of ROI GPU mining does almost never pay...

My main miner is at work I'm sure you can do the same in Germany

You're right! I'm already trying to do something like this...

[vs3]

5850 never uses only 80 to 85W. It uses 150W at stock and 165 to 191W at 300. Look at https://en.bitcoin.it/wiki/Mining_hardware_comparison

I have 6 of those and I have checked with the kill-a-watt and I can assure you that this is exactly how much power they use.

The rig that sits right next to me at the moment has two quad-core xeons, a bunch of hard drives and 3 of those cards. With all mining it currently uses 460-465W. When I stop the mining it uses 210-220W. One of the other rigs can barely run Solitaire but idles at 45W and goes to 215-220W during mining with two cards.

Oh yeah - and if you trust that page the 5850 should be able to do >400MH/sec. That's a BS - unless you water-cool it and waaaay overclock it. I've undervoltaged them (0.950V), underclocked the memory (500MHz) and overclocked them a bit (775MHz) and they do exactly 305MH/s and are perfectly stable and cool at 65-68C. I guess I could squeeze out another 30-50MH but I have to overvoltage them which makes even more heat and consumes more power - what I gain in megahashes I'll pay in kilowatts.

Let me know if you want pictures and screnshots.

[Lucko]

5850 never uses only 80 to 85W. It uses 150W at stock and 165 to 191W at 300. Look at https://en.bitcoin.it/wiki/Mining_hardware_comparison

I have 6 of those and I have checked with the kill-a-watt and I can assure you that this is exactly how much power they use.

The rig that sits right next to me at the moment has two quad-core xeons, a bunch of hard drives and 3 of those cards. With all mining it currently uses 460-465W. When I stop the mining it uses 210-220W. One of the other rigs can barely run Solitaire but idles at 45W and goes to 215-220W during mining with two cards.

Oh yeah - and if you trust that page the 5850 should be able to do >400MH/sec. That's a BS - unless you water-cool it and waaaay overclock it. I've undervoltaged them (0.950V), underclocked the memory (500MHz) and overclocked them a bit (775MHz) and they do exactly 305MH/s and are perfectly stable and cool at 65-68C. I guess I could squeeze out another 30-50MH but I have to overvoltage them which makes even more heat and consumes more power - what I gain in megahashes I'll pay in kilowatts.

Well my dose 395 stable but with 1 or 2 HW errors in 24 hours, 388 without errors and 410 for short time. And you need to buy a batter kill-a-wat or you didn't count in idle power.

http://www.amd.com/us/products/desktop/graphics/ati-radeon-hd-5000/hd-5850/Pages/ati-radeon-hd-5850-overview.aspx#2

EDIT: The only modification I made is Arctic silver thermal paste.

EDIT2: Mem @75 Core @ 948(395)942(388)970(410) stock voltage.

[KNK]

lady luck is here.. yippee
-and then the pools hashing power goes up and rewards go down.

And again my Windows decided to sleep in the middles of the long block before that

18170   2013-05-23 14:45:45   3:00:18   24589717   150   0.00000000 ... after mining for 2h, but wasn't at home to awake it up.

and i am back again for the long block - Current round duration:   1:23:40

EDIT: bidding is open for me to let it go sleep again

[Paulizei]

lady luck is here.. yippee
-and then the pools hashing power goes up and rewards go down.

And again my Windows decided to sleep in the middles of the long block before that

18170   2013-05-23 14:45:45   3:00:18   24589717   150   0.00000000 ... after mining for 2h, but wasn't at home to awake it up.

and i am back again for the long block - Current round duration:   1:23:40

EDIT: bidding is open for me to let it go sleep again

This is hardly a Windows issue, if u set all paramters in Bios and Windows right (no sleep/Hibernation S1/S2/S3 power saving Modus at all).

Do you have any 3rd Party software running (Toshiba, Lenovo, DELL Power Management Software for example)?

P.S.: Windows (2000, XP, 7 and earlier) tends to have issues with falling into sleep mode or hibernation. Therefore the opposite seems quite strange to me...

[KNK]

It's Windows 8 machine running fine for weeks, but after the last restart (and some updates being installed automatically with it) - the miner stops even all lights are ON ... GPU fans stop, PSU is semi-passive, so no noise from it is normal = it went to sleep, i assume.
After touching the mouse the fans start again (monitor is lit up), but not the mining until it is restarted.

EDIT: BIOS not touched, no additional software - at least not power ralated or even running at the same time except miner

[ewitte]

And again my Windows decided to sleep in the middles of the long block before that

18170   2013-05-23 14:45:45   3:00:18   24589717   150   0.00000000 ... after mining for 2h, but wasn't at home to awake it up.

and i am back again for the long block - Current round duration:   1:23:40

EDIT: bidding is open for me to let it go sleep again

I've had two nights in a row where my main miner crashes and cgwatcher didn't restart until I hit ok on the windows error report lol.  Disabled it in the registry/gpedit hopefully fixes this.

[Trongersoll]

I wish people would stop trying to take into account the resale value of their video cards when figuring return on investment. by the time that you get around to selling them, technology will have progressed to point where they will be obsolete, or the market will be so glutted that nobody will want them.

Case in point. i planned on building a mining rig using one of two motherboards i have laying around unused. Bought the video card and then  looked at the motherboards.... um... AGP. ack. so now the rig will have a new motherboard and CPU as well, and a $400 investment turned into a $750 investment. fortunately, for me this is a hobby so set backs like this aren't too upsetting.

a question on the MB though. it has 3 PCI-e slots, one is x16, one is x4 and one is x1. Can all 3 be used for video cards? will performance be affected? i'm not sure what the numbers mean.