Quote from: MeltManBob on April 29, 2013, 05:17:45 AM

I would have to disagree as for the 7970 being even slightly better. Here's a link to the spreadsheet I made for this, it factors quite a bit in.

https://docs.google.com/spreadsheet/ccc?key=0Au-5jsYGHc29dG94ekRvbEl1WEUxcnFYMU14eDRRV3c&usp=sharing

The 7970 is about $.06 more expensive per KHash/s and per watt.

7970's in a 3 card setup will take roughly 17 weeks and 1 day to break even where as the 7950's will take about 15 weeks and 3.5 days. Surprising that what seems like such a small difference actually has a pretty big effect? $.06 per MHash/s and per watt equates to 11 days difference in the break even time... 10% faster return on investment.

So are you saying it is better to get the 7970's over the 7950's?