Power usage with 1080 Ti + Vega 64 ~ 540W (wall) ~ 100 Mh/s ETH

[e97]

I feel like this is too much.

I'm at 105W idle (Xeon + 64 GB ECC RAM, using this for other things when not mining).

I recently upgraded drivers and swapped the power supply. Was at 480W before.

NVIDIA 398.11

AMD Driver 18.5.2

Claymore 11.6 + ETHenlargement ~ 100 Mh/s

OC Programs:
MSI Afterburner 4.5.0
OverdriveNTool 0.2.6

OC Settings https://imgur.com/a/S4kxczS

Any ideas on what I'm missing?

One boot it showed 430W but then crashed after 15 min when I tried to login remotely.

[e97]

I expected around 130 W CPU/system + 160 W Vega 64 + 140 W 1080 Ti ~ 430 W.

HWiNFO64 shows :
~ 25 W CPU
~ 178 W for Vega
~ 161 W 1080 ti

= ~364 W + motherboard + ram

so I'm running 100 W hot.

I'll run some sanity checks with the old power supply.

[chup]

I expected around 130 W CPU/system + 160 W Vega 64 + 140 W 1080 Ti ~ 430 W.

HWiNFO64 shows :
~ 25 W CPU
~ 178 W for Vega
~ 161 W 1080 ti

= ~364 W + motherboard + ram

so I'm running 100 W hot.

I'll run some sanity checks with the old power supply.

Probably missing power difference of XEON and 64GB ECC RAM under stress of two running miners.  I pulled out 4 1GB modules and left 4 of 4GB in my test machine in order to save on power/cooling, because ECC was going north of 90 degrees at smaller modules during mining.
And Your Vega target temp is way too high. I wouldn't go higher than 55.

[Geraldo]

so I'm running 100 W hot.

Before suspecting the other thing, tell us which power supply are you using? (-how about the efficiency of your power supply)

Total power draw from the wall, also depends on your PSU efficiency. Make sure you've made the right measurement (I'm sure you've known about it), but you didn't write up PSUs specification on your post.

My suspecting may relate to your statement.

I recently upgraded drivers and swapped the power supply. Was at 480W before.

Yeah, 100 W maybe too much. Write up your PSU specification so that we can measure it, then we can move to other possible things (-such as your current setup).


Adding your img 

[e97]

@chup : vega min fan speed is 2900 and with ambient 23 C Vega doesnt go above 63 C. I'm planning on water cooling it soon

@Geraldo : thanks! forgot i can hotlink now


Re: Power

Old:

110 V -> DPS-1200 -> Power GPUs and 12v EPS
         ->  620W Bronze ATX --> 24 pin ATX + SATA


New:

110 V -> DPS-1200 -> Power GPUs and 12v EPS
                              |---> Pico PSU ---> 24 pin ATX + SATA

I will also sanity test :

110 V -> 620 W Bronze ATX --> GPUs + EPS + 24 pin ATX + SATA

[e97]

dps-1200 + atx =
1st boot 435 W -- crashed on 2nd remote login
2nd boot 539 W


Only
First boot 427 W - reboot
Second boot 431 W

HWiNFO64:
CPU: 23 W
VEga 100W
1080 Ti 160W


I'd say its most likely power supply line quality and this chinese mobo not mixng very well.

[e97]

Did some more testing and had a crash with the pure ATX power supply. Also swapped out the C13 power cable.

The issue is definitely the motherboard/cards -- when the system crashes, the cards draw way too much power if not completely powered down.

Current setup now:

110 V -> DPS-1200 -> Power GPUs and 12v EPS
                              |---> Pico PSU ---> 24 pin ATX + SATA

100 Mh/s @ 427 W  

[squallw]

Whats your power supply model? Did you measure with kill a watt or only at some software?

I guess you can undervolt and underclock, for example, in my RX570, at factory settings i was getting 25mh/s@160w, after bios mod i can get 30mh/s@125w.
But i did underclock on gpu, overclock on mem and undervolt all. Im using 80+ Platinum that has a good efficiency.

[e97]

110 V outlet --> kilowatt -> surge protector -> PSU