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Topic: Switching off my GPUs, tears in my eyes - page 2. (Read 7011 times)

legendary
Activity: 1680
Merit: 1014
October 08, 2013, 09:19:45 AM
#17
Solo-mining GrandCoin and Diamond the last month or so was often more profitable than LTC/FTC (http://www.coinchoose.com/), but I too am on the verge of switching off the GPU rigs.
My BEs can last until diff hits 4,500,000,000 (23x from today's) at my current electricity costs, though.
full member
Activity: 196
Merit: 100
October 08, 2013, 07:29:26 AM
#16
Tough to recover in these conditions
full member
Activity: 224
Merit: 100
October 07, 2013, 09:22:31 AM
#15
I bought about 20x 7950/70 early this year just to mine bitcoins.

Everyone was calling me stupid, crazy... ASICs are gonna take over, they said.

I knew they were right, but I knew they were wrong.

Ironically, it is a BFL ad on Slashdot that brought my attention to the rising BTC price early February.

I bought many, many GPUs in the new and 2nd hand market in just 2 weeks (no pun intended), and soon I was mining bitcoins at the "crazy" rate of 8.5 GHS, at a difficulty of 3 million (yes, that's about 50 times lower than current diff).

I had ROI on all my purchase in just 4 month instead of the 9 expected month in my initial plan. Moreover, smart investments in stock markets allowed me to turn the profits into much, much more BTCs in the end.

Maybe I could have been just as fine by buying BTC instead of GPUs, but the fact is that GPUs are resellable even after a total crash of crypto-currencies, so the risk taken was less than buying pure BTC.

Also, of course, I could have bought BTC early Feb at 28$ and sold off just before Apr 10 at 250, but of course that is the time-machine thing. I can't say I regret not taking this move, in hindsight.

So I switched from BTC mining to scrypt, mostly LTC mining in the last few months, after the first ASIC wave. It was nice until the moment when profitability dropped to zero for me, at about 0.20$/KWh. After a couple of weeks mining at loss, the late price drop of LTC gave the final blow to unplug the rigs, and it saddens me Sad

Although I used the profits of my 8.5 GH/s GPU power to reinvest up to my current 550+ GH/s ASIC hash power (already hashing for me, not labcoin style lol), which I hope was a clever move (time will tell), I kind of liked the direct touch with the mining rigs. Now most of my hashrate is spread out between friends' locations, group buys, virtual mining etc. and I only have about 10% of my hashrate physically at home.

tl;dr: buying GPUs in February wasn't that stupid after all. Buying GPUs now would be stupid, check BitFury, CoinCraft, CoinTerra etc. (avoid BFL of course, unless you trust them for some reason) if you want to enter the race -- good luck and be careful.

Cheers

Nice move, many people still haven't recover their money from the recent asic and usb eruptors orders.
member
Activity: 83
Merit: 10
October 01, 2013, 07:54:23 AM
#14
I bought about 20x 7950/70 early this year just to mine bitcoins.

Can you tell total amount you spent on GPU rigs just to see how much they lost on velue.

And don't be sad, you didn't lost money like some fresh comers Smiley
hero member
Activity: 574
Merit: 500
October 01, 2013, 07:06:28 AM
#13
I bought about 20x 7950/70 early this year just to mine bitcoins.

Everyone was calling me stupid, crazy... ASICs are gonna take over, they said.

I knew they were right, but I knew they were wrong.

Ironically, it is a BFL ad on Slashdot that brought my attention to the rising BTC price early February.

I bought many, many GPUs in the new and 2nd hand market in just 2 weeks (no pun intended), and soon I was mining bitcoins at the "crazy" rate of 8.5 GHS, at a difficulty of 3 million (yes, that's about 50 times lower than current diff).

I had ROI on all my purchase in just 4 month instead of the 9 expected month in my initial plan. Moreover, smart investments in stock markets allowed me to turn the profits into much, much more BTCs in the end.

Maybe I could have been just as fine by buying BTC instead of GPUs, but the fact is that GPUs are resellable even after a total crash of crypto-currencies, so the risk taken was less than buying pure BTC.

Also, of course, I could have bought BTC early Feb at 28$ and sold off just before Apr 10 at 250, but of course that is the time-machine thing. I can't say I regret not taking this move, in hindsight.

So I switched from BTC mining to scrypt, mostly LTC mining in the last few months, after the first ASIC wave. It was nice until the moment when profitability dropped to zero for me, at about 0.20$/KWh. After a couple of weeks mining at loss, the late price drop of LTC gave the final blow to unplug the rigs, and it saddens me Sad

Although I used the profits of my 8.5 GH/s GPU power to reinvest up to my current 550+ GH/s ASIC hash power (already hashing for me, not labcoin style lol), which I hope was a clever move (time will tell), I kind of liked the direct touch with the mining rigs. Now most of my hashrate is spread out between friends' locations, group buys, virtual mining etc. and I only have about 10% of my hashrate physically at home.

tl;dr: buying GPUs in February wasn't that stupid after all. Buying GPUs now would be stupid, check BitFury, CoinCraft, CoinTerra etc. (avoid BFL of course, unless you trust them for some reason) if you want to enter the race -- good luck and be careful.

Cheers


This is crypto only the tough survive  Cool
sr. member
Activity: 440
Merit: 250
September 30, 2013, 07:52:59 PM
#12


+1


Was an interesting story Smiley Especially for a veteran GPU-MINER :.)
member
Activity: 91
Merit: 10
September 30, 2013, 08:10:31 AM
#11
full member
Activity: 166
Merit: 100
September 30, 2013, 06:50:58 AM
#10
You could still be running them for litecoin if you had cheaper electricity! :/
legendary
Activity: 1946
Merit: 1035
September 30, 2013, 02:22:13 AM
#9
For those interested, here are a couple of pictures, some of my retired GPU rigs.

Sorry for the blurry pics, I was in a hurry Wink









legendary
Activity: 1946
Merit: 1035
September 30, 2013, 12:45:38 AM
#8
Holy shit thats high.
I pay .061 if im above 25kw usage (getting close!)

Yes... on the other hand, the electric CO2 energy footprint in Switzerland is close to zero because it's mostly hydraulic power (the mountains help a lot) and about 30-35% nuclear, and 5-10% wind/solar. Although the latter is to be shut down within 20 years due to the concerns after Fukushima, solar and wind power are currently explored and deployed on a small scale to compensate, etc. All this has a cost and is partly subsidised in some way by the utilities price.

So I guess my hashpower (about 10 Mhash/s scrypt) will need to be a power refugee somewhere else Wink
hero member
Activity: 546
Merit: 500
Owner, Minersource.net
September 29, 2013, 11:52:59 PM
#7
for the right price I would rent some script hash power from you Smiley ( give me a pm if your interested )

The problem is I don't think there is any way to make profits currently at 0.24 USD/KWh (corrected price). That is why is consider selling the hardware. I will follow up here, watch this topic. Thanks for your interest Smiley
Holy shit thats high.
I pay .061 if im above 25kw usage (getting close!)
legendary
Activity: 1946
Merit: 1035
September 29, 2013, 10:48:40 PM
#6
At what voltage do you run the cards? I can't really be sure, but I'd bet one can run 7950's at 0.95V (down from 1.188) and still get around 90% of the scrypt hashrate, for 65% of power usage.

I knew about that kind of tweaking, but I haven't tried it. I did tweak, however, lower the core and mem clocks, up to the G-spot where I would get the best kHs/kWh, and keeping all temps between 65-75°C without too much cooling.

If you (the forum in general and those who PM'd me) manage to get profits out of my hardware, I'll be happy to post an inventory soon Smiley

I will also post pictures of the rigs here.
sr. member
Activity: 840
Merit: 255
SportsIcon - Connect With Your Sports Heroes
September 29, 2013, 10:39:23 PM
#5
At what voltage do you run the cards? I can't really be sure, but I'd bet one can run 7950's at 0.95V (down from 1.188) and still get around 90% of the scrypt hashrate, for 65% of power usage.
legendary
Activity: 1946
Merit: 1035
September 29, 2013, 09:51:00 PM
#4
for the right price I would rent some script hash power from you Smiley ( give me a pm if your interested )

The problem is I don't think there is any way to make profits currently at 0.24 USD/KWh (corrected price). That is why is consider selling the hardware. I will follow up here, watch this topic. Thanks for your interest Smiley
legendary
Activity: 868
Merit: 1000
ADT developer
September 29, 2013, 09:20:47 PM
#3
for the right price I would rent some script hash power from you Smiley ( give me a pm if your interested )
sr. member
Activity: 420
Merit: 250
September 29, 2013, 09:18:31 PM
#2
So... how much are you selling those 7970s for? Smiley  I'm buying at $250/card for reference designs with the single blower.
legendary
Activity: 1946
Merit: 1035
September 29, 2013, 06:23:50 PM
#1
I bought about 20x 7950/70 early this year just to mine bitcoins.

Everyone was calling me stupid, crazy... ASICs are gonna take over, they said.

I knew they were right, but I knew they were wrong.

Ironically, it is a BFL ad on Slashdot that brought my attention to the rising BTC price early February.

I bought many, many GPUs in the new and 2nd hand market in just 2 weeks (no pun intended), and soon I was mining bitcoins at the "crazy" rate of 8.5 GHS, at a difficulty of 3 million (yes, that's about 50 times lower than current diff).

I had ROI on all my purchase in just 4 month instead of the 9 expected month in my initial plan. Moreover, smart investments in stock markets allowed me to turn the profits into much, much more BTCs in the end.

Maybe I could have been just as fine by buying BTC instead of GPUs, but the fact is that GPUs are resellable even after a total crash of crypto-currencies, so the risk taken was less than buying pure BTC.

Also, of course, I could have bought BTC early Feb at 28$ and sold off just before Apr 10 at 250, but of course that is the time-machine thing. I can't say I regret not taking this move, in hindsight.

So I switched from BTC mining to scrypt, mostly LTC mining in the last few months, after the first ASIC wave. It was nice until the moment when profitability dropped to zero for me, at about 0.20$/KWh. After a couple of weeks mining at loss, the late price drop of LTC gave the final blow to unplug the rigs, and it saddens me Sad

Although I used the profits of my 8.5 GH/s GPU power to reinvest up to my current 550+ GH/s ASIC hash power (already hashing for me, not labcoin style lol), which I hope was a clever move (time will tell), I kind of liked the direct touch with the mining rigs. Now most of my hashrate is spread out between friends' locations, group buys, virtual mining etc. and I only have about 10% of my hashrate physically at home.

tl;dr: buying GPUs in February wasn't that stupid after all. Buying GPUs now would be stupid, check BitFury, CoinCraft, CoinTerra etc. (avoid BFL of course, unless you trust them for some reason) if you want to enter the race -- good luck and be careful.

Cheers
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