Topic: My second ZEC + XMR+ ETH thread builds info links thoughts and photos. - page 82. (Read 148001 times)

what setttings are you running?

I just figure out how to get more out of my system!!!  

Overview:

-total system hashing  = 169.6mh
-each gpu hashing  = 28.3mh
-ave card wattage = 67W
-total system Watts = 831W (At the Wall)
-total system Amps = 6.91A (At the Wall)
Efficiency per Card = W/Mhs = 67/28.3 =2.37 (Less is better)
Efficiency per system = W/Mhs = 831/169.6 = 4.90 (Less is better)

You can do it at the panel.  https://youtu.be/XMgwZDtR4tw

I have many 220VAC outlets in the basement that I ran when I had about 14 S7s running in the basement.

You cannot do that. In order to get 240 from 120 V, you need a transformer to do that. That will consumes energy as well.

That would be fairly easy to do if you understand electricity but change out the receptacle to a 240v rated receptacle.

You need to make positive that the receptacle you plan on switching over to 240 has a DIRECT LINE to the circuit breaker and is not daisy chained to other receptacles. All you need is room in the panel for a 240v 2 pole dual ganged breaker.

Make sure to wrap the white wire in electrical tape as required by electrical code, here is a simple pic I drew

http://i67.tinypic.com/2wrnqm8.jpg
 

It is possible to do,so. A lot depends what is in the circuit box.

I did two in my house.  But they were dedicated lines. In the first place.

I did a show n tell  but it will take a day to find the thread.

I can provide two thirty amp 240 circuits which is about 12 kwatts once you derate by 20 %.

Not ever happening as the house would be too hot and too loud.

2 kwatts summer 4 kwatts winter pretty easy to handle heat wise.

Thank you Phil!

I'm renting a home - and have no idea do I have 240V socket or not. It was super easy in EU

I wish I had 240v. If only we didn't need that pesky dryer....

I suppose I could convert two 120s into a 240 circuit in my basement.  Has anyone done so? Just seems like a lot of hassle.

Yes you are close to 25 mh per card 24.9 or so

 and,you are lower then 7 watts an mh say 6.85

It is possible to get to 6 watts but titanium psu 240 volts and all really good chips in the


One rig I have touches 590 watts 101 mh but mostly does 610 watts and 98 mh.

I have four card rigs titanium psu 240 volts.

Phil,

I used AfterBurner.

Started from all stock parameter incrementally decreased voltage on all 6 cards to -65mV

Now I have 148 Mhs with 1015W from the wall

Is it good number?

Thank Lone & Aries!  I saw a bit of the video last week but watched all last night and it seems pretty straight forward and even made sense for a noob like me lol.  I will be taking a crack at doing both the strapping and power reduction on 1 card today as a test and see how it goes.

1.  Yes, I am using MSI RX 470 4GB on 1 of my Rigs. 

2.  See LoneRangir reply.  Basically, it is going into Polaris Editor and Copying the 1500 strap into the following 3 timings.
 
3. You are correct.  Replace the "0" with -15.

Anyone here use sapphire Trixx?
If so how do you get it to load a profile for all gpus

Watch this. It will explain the strapping.

https://www.youtube.com/watch?v=OP_zSP2H6ho

Hey Aries... I've been studying your posts in the hopes of at least partially re-creating the power/watt ratio you've been able to achieve on your 6x470 rig and was hoping you might be able to answer a few questions for me 

1- You are using MSI RX 470 4GB, correct?  Or, are you using the 8GB version?

2- When you say "1500 strap", what are you referring to? I googled it but couldn't find anything that made sense

3- I looked up WattToll and will download it on my rig later, but had a question about the command you used "set Voltage Offsett to -15".  I see this field at the lower right of the WattToll window (shows "0  x  6.25mV" where user can over-write the "0").  Just to confirm, you simply enter "-15" in this field and click Set?

Thanks!

Well, I continue to try and tweak my clock speed and voltage settings on my 4 RX 470 rig.  At last check, I had finally got all 4 cards up slightly from 20.75 to 21.45 Mh/s by setting clock speed to 1700 (max amount in my Wattman for some reason...Afterburner allows all the way up to 2100 so not sure why the disconnect).  Unfortunately, this increased my wattage at the wall to ~730-740 (from ~625 before the tweak). Obviously, this was a net negative trade-off, so I went back in and tweaked some things a bit earlier today.

First thing I did was reset everything on all 4 cards. I wanted to get back my power savings first and then start to mess with clock speeds.  Looking only at the GPU mV by state, I first took a crack at lowering state 4-7 of my 2 hungrier cards. For what ever reason, these 2 suck like 15% more power across the board than the other 2, so I chopped them down a bit. Unfortunately, I must have lowered it too much as 1 of the cards crashed, then my system crashed and rebooted. So, I dialed back the reductions a bit, as well as lowering the other 2 cards. This time all 4 cards were stable and I was actually showing a bit lower total wattage than my original low at about 615.

From here, I upped the clock-speed to 1700 on only 1 GPU to test the result. The HR did go back up to 21.45 and surprisingly, Afterburner was showing almost no increase in wattage pull!  BUT... when I checked my kilawatt, the wattage had jumped up about 50W!  So... 2 questions here:

1:  is a 50W bump for only a measly 1650 to 1700 over-clock reasonable?  I never OC'd before but this seems high for such a nominal increase

2:  why would Afterburner still show the wattage on this card at around 74 both before and after the OC, but my overall wattage pull increased by 50 at the wall?  Does this sound "normal" or is there possible something wrong elsewhere in my system?

I also did some benchmarking on other system resources finally. At boot up with nothing running (except windows of course), I am at 95W (not including monitor that is not plugged into my Kilawatt unit).  Then I launched MinerGate, that I have 7 cores of CPU mining XMR.  This added about 45W. That CPU is hashing about 260 on XMR so that's a semi-decent side-profit of about $10/month lol.  

open amd wattman

reset every card to stock.

then check watts and mh

then open wattman go to bottom  leave gpu alone leave volts alone.

set power to - 20 on all six cards

set fans  at say 2000 - 4000   if they don't go to 4000 set at 2000 - 3000

set gpu temp to 72 - 70    you can do 68-66


only that bottom section gets set.

let us know mh and watts    watts for 140mh should be 950- 1000-1050

question is.. what would you like to do?

UPD. 1 - I tried. This card hash dropped from 24.8 to 4.22MHs. And is not going back - have to restart

UPD. 2 I've undervolted all of them by -50mV and now getting 1130W

UPD. 3 Tried to increase mem clock from 2000 to 2100MHz - system crashed

Do you at least turn down the power by 15 to 25℅? That should help.  What is your power as reported by GPUz per card?