Hi everyone! 
I'm building a mining rig with 6 1080TIs in it. Right now five of them are up and running, powered by recently purchased EVGA SupreNova 1600 PSU. Now I want to add a sixth GPU, but it seems that I am short one 6+2pin + 6pin PCI-E VGA Cable. Is there a way to finish my rig w/o ordering a full set of cables from EVGA (I only need one 6+2pin + 6pin PCI-E VGA Cable and would like not to overpay for full set)?
 
I've found that I can order some basic splitters (8 pin to two 6+2 pins) on amazon, but is it safe to use those? I am not going to plug in both 6+2 ping in one GPU, but rather split it between two GPUs.
 
 

i would not put six 1080ti's on a single 1600W PSU. i currently am running five and i am pulling ~1450W from the wall. meaning one more 1080ti will overpower the power supply. that is unless you are purposefully lowering the power target. doing this would allow you to stay under the 1600W mark BUT i also was forced to move to a 240V AC voltage due to the cord getting too hot to the touch. just some food for thought.

This might be a relatively old topic, but since I faced a similar question about how to power multiple EVGA GTX 1070 Tis I thought it worth to share my experience. As Chris21010 already mentioned here, there is absolutely no reason for an EVGA card to consume 65 Wh more than any other manufacturer's same product. And practically this is the case: under full GPU load at 100% TDP the consumption barely passed 160 Wh. In my case I was building a mining rig with 6 pcs of 1070Ti FTW, using an EVGA Supernova 1300 G2 power supply. To power all the cards from this single piece of PSU I bought some good quality 6pin-to-dual 8pin splitters and they work like a charm. Even if bob16314 is right with his theoretical calculations, it is not even close to the reality. Under full GPU load at 72% TDP the full power consumption of the whole system is 908 Wh
 
I have no idea why EVGA rates these cards at 215 Wh max power draw, and WHY THE HELL they put two 8 pins on it... maybe because they are against crypto mining, and trying to keep away miners from their products?!  I will continue to buy EVGA products, simply because they are one of the best and wanted to share my story, so nobody gets afraid of purchasing these cards because of the "false" specs... 
 
Cheers!

bobix
 
I have no idea why EVGA rates these cards at 215 Wh max power draw, and WHY THE HELL they put two 8 pins on it... maybe because they are against crypto mining, and trying to keep away miners from their products?!  I will continue to buy EVGA products, simply because they are one of the best and wanted to share my story, so nobody gets afraid of purchasing these cards because of the "false" specs... 
 
Cheers!

 
@ 215W are you using 220V ?
 
You did not mention a specific 1070 Ti
 
Answer:  Just because you have not pushed your cards hard enough to use the Max power does not prove the specification is wrong or misleading
 
EVGA supports those who want to OC their system --EVGA supports enthusiasts 
 
Because EVGA Designed the Cards to take a power load of (xxx) Watts @ 120 V --> (depends on card)
 
EVGA GeForce GTX 1070 Ti GAMING, 08G-P4-5670-KR

• One available 8-pin PCI-E power dongle
• Total Power Draw : 217 Watts

EVGA GeForce GTX 1070 Ti FTW ULTRA SILENT GAMING, 08G-P4-6678-KR

Total Power Draw : 235 Watts  

So EVGA then need to do what?
Dump the Gamers and Enthusiasts and only support the Miners and downgrade their Products in favor of Miners? 
Just asking as it seems that Miners are the ones who complain the most about everything that EVGA sales.
Or was your post for bobix and not the Forum in General?

My rule of thumb for any PSU you expect to last --> power used is - less than or equal to - 80% of PSU capacity
 
You also need to keep it clean & cool while supplying clean power (think UPS) and it will last a Very long time

Ok, I have to admit that I was a bit harsh with some of my statements, but maybe you also missed that I put the "false" adjective between apostrophes. Sorry for that!
It clearly DOES matter what are you going to use your purchased GPU for. If you OC the hell out of it, then maybe it could reach the TDP defined in the specification (but I still consider that 200+ an excessive value). I was not clear but was referring to this specific topic, where OP stated he was going to build a mining rig. Then the other forum member, who more than probably has no experience with mining, was instantly referring to the maximum TDP specified by EVGA in his calculations. However, that should never be reached when mining.
The one thing that in fact really bothers me is the two 8pin power. Why didn't EVGA opted for 8+6 instead, so people don't have to look for splitters, because they can easily find original 8+6pin modular cables...

bobix
This might be a relatively old topic, but since I faced a similar question about how to power multiple EVGA GTX 1070 Tis I thought it worth to share my experience. As Chris21010 already mentioned here, there is absolutely no reason for an EVGA card to consume 65 Wh more than any other manufacturer's same product. And practically this is the case: under full GPU load at 100% TDP the consumption barely passed 160 Wh. In my case I was building a mining rig with 6 pcs of 1070Ti FTW, using an EVGA Supernova 1300 G2 power supply. To power all the cards from this single piece of PSU I bought some good quality 6pin-to-dual 8pin splitters and they work like a charm. Even if bob16314 is right with his theoretical calculations, it is not even close to the reality. Under full GPU load at 72% TDP the full power consumption of the whole system is 908 Wh
 
I have no idea why EVGA rates these cards at 215 Wh max power draw, and WHY THE HELL they put two 8 pins on it... maybe because they are against crypto mining, and trying to keep away miners from their products?!  I will continue to buy EVGA products, simply because they are one of the best and wanted to share my story, so nobody gets afraid of purchasing these cards because of the "false" specs... 
 
Cheers!

Because they are designed to be used in some applications where they CAN push 215 watts - like high-end OC pushed gaming or folding.
I don't recommend the FTW models for cryptocoin mining as they're more expensive for no better performance unless you don't care about efficiency and push everything to the max - and even THEN they aren't noticeably better than the SC models while being harder to power a bunch of them in a riser rig due to the "more power connectors needed than usual" factor.
 
BTW - the DEFAULT TDP for a 1070 ti is 180 watts, not 150 watts - the 1070 ti FTW is only rated for 35 watts more than the "standard" not 65 watts.
There ARE other cards by other manufacturers that are more than the 180 watt "default", it's NOT just EVGA - MSI has a Gaming X model at 240 watts which I think is the highest "factory TDP" for any 1070 ti model.
If you want crazy, look at that MSI GamingX 1070 model that is ALSO factory rated for 240 watts TDP (90 watts more than the normal default) but can't be pushed much past 185 no matter WHAT you do to it, and overheats pretty badly at THAT level.
Seems like MSI uses the same HS/Fan combo on all of their GamingX models and tries to say they ALL are rated for 240 watts (except the 1080 ti).
 
CoolGTX - the power input voltage to the power supply DOES NOT MATTER to a GPU, dunno why you were taking about 120 or 220 volts at all?
 

Maybe here https://forums.evga.com/FindPost/2698650
About the EVGA GeForce GTX 1070 FTW2 GAMING, 08G-P4-6676-KR

• Minimum of a 500 Watt power supply.
• Two available 8-pin PCI-E power connectors
• Total Power Draw : 215 Watts

 

Lowest 1070 Ti Requirements

Minimum of a 500 Watt power supply.

One available 8-pin PCI-E power dongle

Total Power Draw : 217 WattsLowest 1070 Ti

Highest 1070 Ti Requirements

Minimum of a 500 Watt power supply.

Total Power Draw : 235 Watts

post edited by bcavnaugh - 2018/02/23 13:55:55