First miner setup - power question | Bitcointalksearch.org

steelminer

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Quote from: Helios45 on December 27, 2017, 07:29:05 PM

You should be able to share the SSD drive power on the same SATA cable as a PCI-E riser as its power consumption is very minimal

The 1080 Ti TDP is much higher at 250w, most of the 1070 Ti's at 180w and most of the 1070's at 150w while some of them have higher TDP

I think you're right. Even with 2x750w that's going to be light if those 1070 ti's can draw 180w, I just bumped spec up to a 1000w + 750w psu's

Helios45

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You should be able to share the SSD drive power on the same SATA cable as a PCI-E riser as its power consumption is very minimal

The 1080 Ti TDP is much higher at 250w, most of the 1070 Ti's at 180w and most of the 1070's at 150w while some of them have higher TDP

steelminer

newbie

Activity: 40

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Quote from: Helios45 on December 27, 2017, 06:48:03 PM

I'm not sure but if your EVGA PSU comes with 8 PIN to 2x 6+2 PIN PCI-E power cables then you should be able to connect both power ports on your GPU's using one single cable

The risers will connect to the peripheral/SATA ports on your PSU using either molex or sata cables, try to avoid connecting more than one riser per power cable

I will be more concerned about your PSU's as they don't seem to be properly sized for your rig, the Zotac 1080 TI uses 180W at 100% TDP so your PSU's will clearly not handle your rig at 100% TDP so you should only be able to run it a lower power limit

Hmmm 8 risers and each psu only has 3 sata and 1 peripheral ports. I'm gonna be one short for the SSD.

I thought the 1070 ti's use a lot less power than the 1080 ti's?

Helios45

full member

Activity: 244

Merit: 103

I'm not sure but if your EVGA PSU comes with 8 PIN to 2x 6+2 PIN PCI-E power cables then you should be able to connect both power ports on your GPU's using one single cable

The risers will connect to the peripheral/SATA ports on your PSU using either molex or sata cables, try to avoid connecting more than one riser per power cable

I will be more concerned about your PSU's as they don't seem to be properly sized for your rig, the Zotac 1080 TI uses 180W at 100% TDP so your PSU's will clearly not handle your rig at 100% TDP so you should only be able to run it a lower power limit

steelminer

newbie

Activity: 40

Merit: 0

I've ordered components for my first mining rig and may have a problem with the power requirements.

MOBO - ASUS Prime Z270-A (7 PCI-e slots, 2 M.2 slots)
GPU's - 8 x ZOTAC GEFORCE GTX 1070 TI AMP
8 x Pci-e risers
120GB SSD

PSU's - 2 x EVGA GQ 750w Gold

Where I think I might have screwed up is these GPU's require 2 x 8 pin plugs each

This is what's available on each PSU:

https://images.evga.com/products/gallery/210-GQ-0750-V1_XL_5.jpg

Is it OK to use "Y" splitters for the two 8 pin plugs on the GPU's?

I've never used risers before and they are powered, how will I power these?

https://images-na.ssl-images-amazon.com/images/I/71vvrBBssKL._SL1001_.jpg

Topic: First miner setup - power question (Read 124 times)