Quote from: CoffeeCat on November 21, 2015, 08:43:47 PM

Quote from: chrysophylax on November 21, 2015, 05:47:44 AM

Quote from: bathrobehero on November 21, 2015, 05:29:47 AM

Quote from: CoffeeCat on November 21, 2015, 12:05:15 AM

So perhaps this is a bit off topic, but you guys seem like a knowledge group. Are the 750 ti's the most power efficient of the of the Maxwell cards? Thanks.

It greatly depends on where you live; for me the 970s are the best choice by far even if I only go for 4 x 970 per rig, but of course I also add 2 x 750 Ti.
While a 6 card 750 Ti rig looks great on paper, you can't really disregard the price of the whole PC itself (mb+cpu+memory+hdd+psu) which all adds up, disrupting the efficiency/ROI of a 6x750Ti rig. But of course YMMV.

ill be building a 6 x gigabyte 980ti g1 miner very shortly ( when the funds allow ) and will have the results in comparison to the 6 x gigabyte 750ti oc lp miner ...

this should give an indication ( hashrate also ) of how efficient these two machines are ... admittedly - ccminer-spmod - it will be a huge hashrate difference - but power efficiency will be the question with this - not hashrate ...

i am actually hardpressed to believe that the 6 x gigabyte 750ti oc lp miner would not be more efficient than the 6 x gigabyte 980ti g1 system ... even if all the computer power consumption is taken into effect ...

obviously this is not using the 970 as you specified - but i dont think thefarm will be upgraded to the 970 card - so i couldnt test that anyway ...

#crysx

I have a motherboard that has five PCI slots (two PCI's are the small version). It didn't like four 750 Ti's, but was fine with three 750 Ti's and 960. Do you think this is a Windows thing out of curiosity?

Did you plug in all cards in at the same time ?
When using windows i always start installing the cards in the pci-e port nearest the cpu. And then adding more cards one by one as long as they get detected by windows. Sometimes it can be a real hazzle before windows find all cards, i even have to move cards around on the pci-e ports to get all cards going. So, plugging all four cards in there and installing the graphics driver will probably not work right away.