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July 27, 2016, 06:40:01 PM |
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Don't bother trying to use a GPU to mine Litecoin (or any other Scrypt-based coin) with.
You will LOSE money bigtime.
In the 100MH/s range, you'd be looking at an Innosilicon A2 "Mega Terminator" unit - max turbo mode on those is about 110MH/s, non-turbo mode around 90ish at slightly higher efficiency.
That ONE UNIT will consume ballpark 1200 watts in max turbo mode (depending on efficiency of the power supply) - getting to that hashrate with GPUs would need ballpark a HUNDRED GPUs (perhaps 50 if you go with the dual-GPU on one card type) and would eat quite a few kilowatts.
The other commonly used options currently are KNC Titans (somewhat more efficient, but more prone to die and tend to cost more) or Alcheminers (and their clones, about the same efficiency as the A2 units but need an external PS and only come in 250MH/s units).
Innosilicon has a new unit showing up in around a month, the A4 Dominator - you might want to look into one of those units.
As of this time, Innosilicon is the only remaining company making new Scrypt-based miners - everyone else has either gone bust (KNC, Alcheminer, Silverfish), gotten out of the business but might still exist doing something else (Zeus, Grideed/SFARDS), or was a scam.
The Alcheminer folks announced they were planning to work on a second-generation unit, but apparently never got the pre-order/crowdfunding together to actually do so.
For reference, even the original Scrypt-capable ASIC (the Gridseed GC3355) was capable of quite a bit higher efficiency than ANY GPU ever managed - my bladed routinely did about 2.7 MH/side at about 40 watts/side.
They probably are more efficient than even the new AMD RX480 would be capable of, much less older 28nm GPUs like the R9/HD7xxx AMD series was - but by CURRENT standards the Gridseed-based miners are money-LOSERS mining Litecoin unless you have VERY VERY CHEAP electric (they CAN eek out a small profit at 3c/KWH) or FREE electric.
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