- Sep 5, 2003
Sorry, I wasn't clear. The primary rig is i7-6700K with R9 295X2 + R9 390 in Tri-Fire.I see. So it has the 390, some other machine (gaming box I assume) has the 295x2 and the 7970 is wasted.
The 7970 is the left over card from my 7970 CF before that. Still works perfectly -- about 70*C at 1150mhz overclock. Both of those 7970 cards are from early 2012.That is a shame, Tahiti is a mining champion.
You make a good point. I might consider getting a 1000W PSU and just putting 3-4 Polaris 10 cards in it. The upfront cost is more but it's 1.5-2x the mining rate a month. I am thinking about it since it would be easy to buy a Z170 board and Skylake and resell those in 6 months given that they don't lose much value.I get not wanting to spend more, I have three rigs running now to avoid having to upgrade a PSU to consolidate two into one. All those extra costs beyond the GPU screw up the payoff equation.
Ya but that would push me even more towards expanding with more R9 390s/Polaris 10 cards than buying a $300 USD 980. I guess I'll have to do the math in Excel to see what's better over the next 6 months but it's kinda hard to estimate too since I have no idea if Polaris 10 will have hashing rate close to R9 390s or closer to Tonga's which is barely better than a 970 OC.Good thing about Nvidia cards is their value bottoms out at a higher place on average.