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Author Topic: Best hash per watt (J/hash)  (Read 4631 times)
Grim
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May 23, 2013, 05:27:03 PM
 #1

I wanna know your guys opinion about best hash per watt for BTC and/or LTC.

As far as i know:


HD 7790

HD 7850

HD 7950


Any insights?
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There are several different types of Bitcoin clients. The most secure are full nodes like Bitcoin Core, but full nodes are more resource-heavy, and they must do a lengthy initial syncing process. As a result, lightweight clients with somewhat less security are commonly used.
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crazyates
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May 23, 2013, 07:20:36 PM
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I have a Jalapeno sitting next to me doing 5.5GH/s for 45watts.  Grin

That said, get any voltage unlocked 7950 or 7970. They can reach some impressive numbers for a GPU. However, you want to look at profitability, not most energy efficient. Here's what I mean:

Click for larger image:


I can undervolt to increase my MHs/watt to 2-2.5x stock, but I actually lose profitability.

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miningdude
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May 23, 2013, 08:48:42 PM
 #3

@crazyates, rather than clamor for your order #, I'll just say Congrats!

And yes, I would agree the 7950 and 7970 are the best cards. In my mining experience the 7950 runs a bit cooler than the 7970 so you can push it further. There are a few FPGA's being re-sold around the forum that would have a pretty good hash to watt ratio. I wouldn't pay more than $1 per Megahash though at this point (for example $860 for an 860Mh/s FPGA).
Grim
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May 23, 2013, 09:13:48 PM
 #4

very nice chart, thank you

still would like to know about 7790's

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