Summer Mining Rig Heat Countermeasures: Summary of Efficient Heat Exhaust Methods Without Air Conditioning

2021/7/31

It was okay to do nothing in winter because the outside temperature was low, but in summer it is a matter of life and death.I would like to summarize what seemed to be good after investigating various things to see if there is an efficient heat countermeasure for mining rigs.

Importance of exhaust heat from mining rigs

A rig produces as much heat as a heater equivalent to its power consumption (for example, a 1000W mining rig would keep a 1000W hot air blower running).Therefore, if you are running the rig indoors,In summer, the room temperature rises as the room becomes more sauna-like.

Also, when this happensThe graphic board cannot be cooled sufficiently, which may shorten the life.Become. In order to use the GPU for a long time, it is necessary to efficiently dissipate the generated heat.

Using an air conditioner is one way to do it, but since the environmental load of mining is a problem, I would like to find a cooling method that consumes as little power as possible.

Optimal temperature of GPU during mining

Take a look at reddit and BitcointalkAs a rough guide, GPU core is 69 ℃ or less, VRAM is 95 ℃ or lessIs the temperature at which it can operate with peace of mind.Therefore, we need to aim to operate at temperatures below this temperature even in the summer.

For reference, I will quote a translation of a unique article from an overseas site (coin guide).

30 ° C – 49 ° C: At this temperature, you can't perform any major tasks other than playing Minecraft.Are you sure your GPU is mining?

50 ° C – 59 ° C: Your GPU is better.Isn't the clock short?

60 ° C - 69 ° C: The temperature at which you can see that the GPU is producing an acceptable hash rate.Energy is optimized, okay! You're saving on your electricity bill.

70 ° C – 75 ° C.The hash rate is improved.This is the optimum temperature allowed for new generation graphics cards. If the TDP is 85% or less, it should be easy to achieve.If you live in a cold area, the temperature is also suitable for warming the room.

75 ° C to 79 ° C.Most GPUs can handle this temperature.However, your GPU will not give better results, so lower it a bit for safety.

80 ° C – 89 ° C: You are wasting too much power.In this range, the GPU may seem to work fine, but it's definitely damaging the hardware. Lower the TDP to at least the mid 70 ° C range.

Safe GPU temp – Optimal GPU mining temperatures for GPU longevity

Exhaust heat method XNUMX: Veranda server

This is a method of placing the entire mining rig outdoors.I see many articles by Japanese minors for reference.

Since the intake and exhaust are completed on the balcony, it can be cooled efficiently and the noise from the rig fan is eliminated.

However, because it is installed on the balconyDiligent management, securing of power supply, measures against theft, dustproof, rain and wind are required.

I also saw reports that the temperature dropped by nearly 5 ° C after coating with a heat-shielding paint.

Heat exhaust method XNUMX: Management by Grontent

This isCompleted indoorsTo do.I get the impression that there are many articles from overseas (due to security?).

Easy to install (no need for theft or rain / wind measures) and easy to manage.

Fan noise remainsAndDifficulty in securing intake and exhaust portsmaybe.

Exhaust heat method XNUMX: Full-scale water cooling

The rig body is installed in the room, cooled with water, and the hose is connected to the radiator on the balcony to release the heat outdoors.

The cooling performance is the bestAlthough,It takes time and effort for full-scale water cooling, and the cost of parts for full-scale water cooling such as radiators, refrigerants, pumps, hoses, etc. is high..