PSU required for gtx 1070ti 8gb and gtx 960 4gb

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shivgre

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Sep 5, 2014
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I am buying gigabyte g1 gtx 1070ti 8GB and I already have gigabyte g1 gtx 960 4GB.

I currently have corsair VS550 watt PSU.
Will this be enough to run both cards or do I need to buy a new one, if I have to replace the PSU which corsair or any better brand would you recommend.

I plan to work as well as game and mine some zcash/ethereum with the setup.

My PC specs :
Gskills 8GB x 2 = 16 GB RAM
8700k I7 CPU
Deepcool kendoman 5 fans Cabinet
1 WD 1TB blue HDD
1 WD 2TB blue HDD
1 500 GB external usb seagate HDD
1 250 GB SSD
1 old 7200 RPM 160 GB seagate HDD
Corsair k92 gaming keyboard
razer mamba tournament edition gaming mouse
Cooler master Hyper 212 EVO CPU cooler

If I need to buy a new expensive PSU then I wouldn't use the old 960 GTX and sell it, would then I be able to use the new GTX 1070 with the VS550 PSU?

 
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shivgre

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Sep 5, 2014
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Ok, thanks for the solution, for now I will just use the new card and sell the 2 years old 960 gtx at around $120~(bought it at $300 approx).

What if in future I plan to add another 1070Ti for mining ether/zcash, which PSU should I get then. In case of upgrading PSU, I really want one that is mid range in terms of quality and also don't eat any unnecessary wattage which could add up to my UPS load and electricity bills.
 
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Dark Lord of Tech

Dark Lord of Tech

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Aug 18, 2009
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http://www.realhardtechx.com/index_archivos/Page362.htm
Here's a nice reference for you.
 
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shivgre

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So it says 2 1070ti recommendation for PSU as 775 watt, does that means I have to buy 850watt psu? If yes which one from corsair or any other better quality PSU would you recommend?
 
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shivgre

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Sep 5, 2014
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So the new card is installed and running and mining perfectly at 26Mh/s for ETH under full capacity at 61 Degree Celcious temperature on the VS 550 PSU. If the mining goes well then I will buy another 1070ti as I have 2 pci x 16 slots on my z370 motherboard though I am not sure whether I can install both at same time without blocking each other, just tried placing the 960 alongside 1070ti to check if there is enough space and it seems a tight fit but will get into the slot after making some cable management for PSU.

In future I will buy Corsair RMx 850w for adding the other 1070ti. Hope it doesn't eat all those wattage and adds up in electricity bill as I am running my PC 24x7(only give it some occasional rest)
 
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shivgre

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Sep 5, 2014
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I just got another geforce twin fan gigabyte 1070 8GB GPU today and installed it along with the 1070 TI GPU and now both the GPU are mining at 100% (without overclocking) on the old VS 550 corsair PSU. I have been monitoring system from last 4 hours and no problems so far under full load. Does that mean I should stick with current 550 watt PSU or buy a RMX 850 corsair PSU?
 
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