Topic: Is exhaust ventilation needed to cool rigs? Even if there is Air-con? - page 2. (Read 2949 times)

It means: Without using a system that sucks the air, a use of air-con is useless in trying to cool the rigs.

Not totally by itself (for significant improvement). There's still the need for another fan to blow the air into the GPU's (will explain everything below).

He's kinda little bit of both, since a simple air flow does the trick.

Yes, it's true but take note that a large fan isn't needed if you'll be using 1 or 2 GPU's only (a single small to medium fan does the trick, even if it's a cheap one with weak intensity).

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From my own mining experience (as of late):

Intensity of 23
GPU with it's own fans alone = at 75% fan speed is at 75°c
GPU with it's own fans + air-con= at 70% fan speed is at 72°c
GPU with it's own fans + air-con + an excess fan that directs the cool air into the GPU and pushes it away from GPU = at 65% fan speed is at 61°c-65°c

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Some notes:

1. Not all GPU's are the same and it could affect the way you could improve the heat issues
   a. Different types of fans (not sure if a blower type of GPU can have a further improvement with an excess fan since never had one, although I'll be getting one by tomorrow and will try to update this post in the coming days)
   b. Direction of the airflow in each GPU is different
   c. The type of casing for the GPU's matter as well (open type, close type)
2. As much as possible, don't go beyond 75% fan speed and 75°c (I've seen some go beyond it but wouldn't recommend it since the GPU and it's own fans life, reduces significantly).

Not exactly an exaggeration, pretty sure their main point was that it is uneconomical to use A/C. Using window or home air conditioners will almost double the cost of electricity used. Depending on rates in your area that can easily kill profits in a heartbeat. It is helluvalot cheaper just to draw relatively cooler outside air into the room and exhaust the hot air out.

why instead to buy expensive aircon you run your miners slower?
just do an easy undervolt to get:
PRO
1) less consume
2) less temperature
3) less noise

CONS
1) Less gains: but i think you can reach a good compromise

and furthermore, you need this compromise, just for the summer... for the other 8 months you can run your miners at full throttle

Not exactly an expert on cooling, airflow, or ventilation but basic logic tells me that using an air conditioner will make the room cooler, which in turn makes the air being sucked by your GPUs / fans cooler.

I would not say that an aircon is at all useless in cooling mining rigs. The above statement might have been an exaggeration.

This individual says "Without exhaust ventilation in the room, an aircon will be useless in trying to cool our rigs"

https://forum.ethereum.org/discussion/7719/to-use-ac-or-not
What does he mean by that??

I thought the aircon will also get rid of the hot air from the GPU?

Any experts know if he right or wrong?


Also is this true?


Found here https://bitcointalksearch.org/topic/how-much-ac-btus-needed-for-mining-1834513