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Author Topic: Best GPU for mining with lowest electricity  (Read 942 times)
maud138
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May 11, 2013, 11:02:26 AM
 #1

Does anyone know what would be the best Grafics Card for mining with the lowest costs on energy?
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alanbubu
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May 11, 2013, 12:23:47 PM
 #2

dont bother ASICs will come out soon and will eat all the coins
koincollector
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May 11, 2013, 12:24:50 PM
 #3

Well he always could mine some scrypt chains  Wink

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miox
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May 11, 2013, 01:39:50 PM
 #4

Have a look at these charts:
https://github.com/litecoin-project/litecoin/wiki/Mining-hardware-comparison
https://en.bitcoin.it/wiki/Mining_hardware_comparison

I personally use Sapphire HD 7950 OC.
For Non-Scrypt coins, consider undervolting memory - that will save electricity. You only need core for SHA-256.
maud138
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May 11, 2013, 01:58:16 PM
 #5

Thanks!
ologua
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May 11, 2013, 02:30:52 PM
 #6

What about purchasing an ASIC shipment confirmation from eBay?
Bagpipe
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May 11, 2013, 03:08:24 PM
 #7

By 7950OC, -- the new card -- people mean Tahiti Pro2, it is the latest revision of the Tahiti chip, it will be marketed in October as some HD8850 OEM ;-)

Yes the chip is very cool, but the board has 180W or 200W power limit, so not much more computing power can be gained, I can not go over 1200MHz Sad

And do not forget to boot with the S switch turned on, as the BIOS it loads when it is off is insane - it locks the Vcc at 1.25V, which is too high for that chip and when you do any tuning on scrypt, the internal protection will shut the card down not to burn it.

Run at the lowest possible Vcc and the best cooling you can get.
cryptomaniac
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May 11, 2013, 04:16:13 PM
 #8

AMD 7950 by far, very cool and energy efficient
psystyle
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May 11, 2013, 05:40:45 PM
 #9

Thanks!
duul
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May 11, 2013, 05:51:52 PM
 #10

It is NOT worth it to buy hardware. Once ASICs take over the market, all the current BTC GPU miners will hop on over to scrypt. The difficulty will skyrocket, and you'll be completely and utterly fucked. Just spend the money to buy bitcoins directly through coinbase or something.

Tired of altcoins being crammed into one board? Come over to AltcoinForum.com (http://AltcoinForum.com) where there's a board for every altcoin!
dennisan
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May 11, 2013, 05:54:52 PM
 #11

Yes, that is also what I believe. Today butterfly started shiping its first units. You should get on the mining wagon as soon as you can, within a month it is going to be over with mining.
mcb18
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May 11, 2013, 10:34:47 PM
 #12

We are in the twilight of GPU mining, but it's up to you to decide if it is worth it to you at this point.

You may want to take a look at the new Radeon 7790 too.  It isn't going to do as much per card as the 7950 (maybe around 300MH/s overclocked) but it is relatively cheap and seems very power efficient.
huilaitrer
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May 11, 2013, 10:58:44 PM
 #13

Well he always could mine some scrypt chains 
gveltre
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May 12, 2013, 12:59:43 PM
 #14

I am using 7970's with about 750kh/s with bfgminer.  I get about 3 - 3.1 mh/s scrypt mining on a 4 card machine.
I am not sure of the power but I estimate it to be about 1200 watts for just the cards.  I know I can't run 2 machines on 1
20 amp breaker. 
Nightlander
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May 12, 2013, 01:58:27 PM
 #15

One question would be, is it be able to get even on GPU mining or even make profit what comes to hardware investment and electricity. Like are you guys able to make profit with your hardware currently?
ethought
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May 12, 2013, 02:08:39 PM
 #16

I have just ordered parts to build some mining rigs (7950s and 7970s). With the obscene electricity prices here in Australia (approx $0.30 / KWH) and the cost of the hardware I will be running at a loss. The ultimate hope of the investment is that the price of LTC rises over the next 12 months. If it LTC prices stay the same I basically break even (maybe lose 10% of investment). If LTC prices rise from current position I make money. If LTC prices drop I lose money. As with all investments it is a gamble, but I would personally say an investment in crypto currencies is at the risky end of the investment spectrum.
naphto
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May 12, 2013, 02:17:46 PM
 #17

You should really think about future and see if it will be profitable anytime soon to mine with GPU
Bagpipe
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May 12, 2013, 08:38:03 PM
 #18

AMD 7950 by far, very cool and energy efficient
No, you mean the SECOND version of HD7950. It uses a new chip revision introduced just recently. Anyway, it can be run in very inefficient way if you have locked voltage at a high level (as one of the BIOSes on my card has).

I am using some rad cooling and it takes 188W from power outlet (230V~) at 1175MHz, 1175MHz RAM at SHA-256, 623MHa/s. Not entirely a new record... just a shadow of things to come either in October or later...
Bagpipe
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May 12, 2013, 08:43:12 PM
 #19

I have just ordered parts to build some mining rigs (7950s and 7970s). With the obscene electricity prices here in Australia (approx $0.30 / kWh) and the cost of the hardware I will be running at a loss...
Cheap. Pretty cheap. That's a better deal than I have and I have an extra special price with discounts, because I am a large consumer... were I a company, the electricity costs would be a multiple of what you quote. Don't complain. If running a generator on unsubsidized petrol doesn't make cheaper electric power tha what you get from the network, you are still getting a good deal.
Orianna
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May 12, 2013, 09:02:00 PM
 #20

Looking into purchasing two 7970's for a LTC mining rig myself.  Any suggestions on brands?  Are you guys running them "underwater" or simply keeping them air cooled?  If so, does it help with the hash rate?  Is it worth the additional expense for the blocks? Does this help with energy efficiency?
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