If im limited to a 100amp breaker, will switching to 240volts from 120volts allow me to run twice the amount of rigs? While being slightly more efficient without blowing the breaker?
If im limited to a 100amp breaker, will switching to 240volts from 120volts allow me to run twice the amount of rigs? While being slightly more efficient without blowing the breaker?
All USA home circuit panels are capable of delivering 240V service at 80% of their rated amp limit.
Coming from someone who has watercooled literally hundreds of cards you shouldn't have to replace thermal compound that often. What thermal compound are you using?
@bctopics I am using a compound that came in a little syringe with the XSPC 290 reference waterblock. It has "K3" on it and the XSPC brand but that's about all. I don't think my problem is with the thermal compound, I think there is some kind of corrosion going on, or some other thing that is maybe blocking waterflow. I have three 290s in a loop and maybe that's a bit much for the little pump I have. I'm going to try to open up one of the waterblocks (I have a spare) and see what's going on inside.
Not sure if anyone was interested in this - how many people are watercooling on mining rigs anyway?
Just thought I would report back for anyone who is: it turned out that the problem was galvanic corrosion. I was running three all copper waterblocks in the same loop as one that was nickel plated. You should never mix your metals because something then becomes the "sacrificial anode". In this case it turned out to be the nickel waterblock. When I took them all off and opened them up there was horrible sludge all through the system - originating at the nickel block which was REALLY bad right where the fins over the GPU chip are. I have removed the nickel block from the loop and have been running three copper blocks now for over a month and they are great. Here in Australia where it's spring the outside/ambient temp is getting up to 30 celcius but the watercooled GPUs never go above 60 celcius - overclocked 290s.
Possibly a dumb question: what purpose do the aluminum standoffs serve? Is it for heat/airflow or electrical isolation? If the later, isn't aluminum still conductive?
Possibly a dumb question: what purpose do the aluminum standoffs serve? Is it for heat/airflow or electrical isolation? If the later, isn't aluminum still conductive?
The area around the holes in the motherboard is non-conductive. You can't place the motherboard directly only the metal frame, or it will short.
@kotarius What is the temperature at your place in degree Celsius? It's 45 degrees here and I am having a hard time cooling down my cards, I have the GPU fans running at 60%, have placed tubes in an Air Conditioner, those tubes end near the GPUs supplying cool air, have a 200W exhaust fan and still the GPUs run @ 80-85 degrees. I am running a 1200MH/s farm and thinking to increase the power in coming months.
Have you thought about positive pressure airflow. We use it in the fire service and we can clear smoke within a house in minutes. Big inlet to a small output hole and it should work wonders.
@SoorajSingh You need 50W of exhaust per 1000W of rigs. Exhaust is most important, you do not need A/C.
So, 12 rigs is 12000W or so, 12*50W = 600W of exhaust. You only have 200W, so you are overheating.
Hello,
You live on that rig? Im happy with you. It produce lot eth on per day, minus electricity. Hope it possible to me allso on my lifetime. I maybe invest 8000 Mh/s, then i dont have to go work anymore and rising up my economy status = money
Hi, I've read all about your farm and just wanna say congrats.
Can you explain your exhaust system? You just have the one huge fan in the wall? How many watts of exhaust is that? And how many 1000W of rigs does that cool. Since you been through a couple hot summers with the rigs can you tell me how the temperature on the rigs faired?
What is the model of your exhaust you used?
Also can anyone show me examples of a positive pressure exhaust system? I am working on building 40-80 rigs.
Comments
Could you share the bios / and the tools that you use for your Sapphire R9 290 ?
I have the same cards !
Thanks you
Just thought I would report back for anyone who is: it turned out that the problem was galvanic corrosion. I was running three all copper waterblocks in the same loop as one that was nickel plated. You should never mix your metals because something then becomes the "sacrificial anode". In this case it turned out to be the nickel waterblock. When I took them all off and opened them up there was horrible sludge all through the system - originating at the nickel block which was REALLY bad right where the fins over the GPU chip are. I have removed the nickel block from the loop and have been running three copper blocks now for over a month and they are great. Here in Australia where it's spring the outside/ambient temp is getting up to 30 celcius but the watercooled GPUs never go above 60 celcius - overclocked 290s.
started with most of them started with 2GH from last May
It's 45 degrees here and I am having a hard time cooling down my cards, I have the GPU fans running at 60%, have placed tubes in an Air Conditioner, those tubes end near the GPUs supplying cool air, have a 200W exhaust fan and still the GPUs run @ 80-85 degrees. I am running a 1200MH/s farm and thinking to increase the power in coming months.
So, 12 rigs is 12000W or so, 12*50W = 600W of exhaust. You only have 200W, so you are overheating.
Sounds like positive air pressure is the way to go! I've seen it used for other farms. A la Bitcoin Master on Youtube.
You live on that rig? Im happy with you. It produce lot eth on per day, minus electricity. Hope it possible to me allso on my lifetime. I maybe invest 8000 Mh/s, then i dont have to go work anymore and rising up my economy status = money
Can you explain your exhaust system? You just have the one huge fan in the wall? How many watts of exhaust is that? And how many 1000W of rigs does that cool. Since you been through a couple hot summers with the rigs can you tell me how the temperature on the rigs faired?
What is the model of your exhaust you used?
Also can anyone show me examples of a positive pressure exhaust system? I am working on building 40-80 rigs.