Need help with heat issues

[bitcoinsc]

Hi there new to mining on this forum. To start off I have 8 gpus 4 and 4 stack on top of each other. I have a fan blowing the the Steel rack. I have a window fan blowing out hot air. I have a fan blowing out the window fan constantly. My room temperature is 91/92 degrees today.. weather is 80 degrees.

What can I do to reduce temperature?

I have an 6 inch inline fan I plan to put near the Steel rack and blow it out the window fan. I'm not sure if its enough.. trying to hit 80 degrees ... on a hot afternoon ..

[1715081128]

1715081128

[1715081128]

1715081128

[1715081128]

1715081128

[1715081128]

1715081128

[Skinny48]

Just because the weather is 80 degrees doesn't mean your GPUs will be showing you 80°C, in door are always cooler even in hot weather, how about dropping your exact temp of your GPUs when mining?

1. Avoid aggressive overclocking
2. If you are on free electricity get air conditioner
3. If your GPU temp is around 50°C to 70°C they are safe

[Vann]

Probably the window fan is not very efficient at removing the hot air out of the room. Basically you want a constant flow of fresh air coming in to replace the hot air in the room, so that it doesn't heat up. An inline fan is a good option, but to do it efficiently you need a fan capable of removing at least the same CFM of air from the room as the size of the room and preferably more. Measure the CF of the room and look at the CFM rating of the fan. Another option is to use a squirrel cage fan but they are pretty loud.

[FloridaKid]

OP if I heard you correctly you are talking about your room, so the rigs are in your room? The only thing you can do is add more fans because that's what I'm doing 😉, I always make your the door to the room is wide open and extra two fans blowing the heats out, other options I can think of are only good for a farm or basement mining like what @Vann recommends

[philipma1957]

Just because the weather is 80 degrees doesn't mean your GPUs will be showing you 80°C, in door are always cooler even in hot weather, how about dropping your exact temp of your GPUs when mining?

1. Avoid aggressive overclocking
2. If you are on free electricity get air conditioner
3. If your GPU temp is around 50°C to 70°C they are safe

This is important.

A gpu rig poorly setup can burn an extra 200 watts with zero extra hash.

So at op

what are your 8 cards?

is this 1 rig?

or 2 rigs?

how about some photos of the setup?

and do you run windows?
how do you clock the gear.

[FP91G]

A regular household fan should be sufficient for additional cooling.
How far are your video cards from each other?
Are your video cards new or used? Maybe it's time to change the thermal paste?
91/92 degrees F = 32degrees C
80 degrees F = 27 degrees C
I'm confused with your temperatures, better write the letter F or C

[Bitbtc8]

Just because the weather is 80 degrees doesn't mean your GPUs will be showing you 80°C, in door are always cooler even in hot weather, how about dropping your exact temp of your GPUs when mining?

1. Avoid aggressive overclocking
2. If you are on free electricity get air conditioner
3. If your GPU temp is around 50°C to 70°C they are safe

This is important.

A gpu rig poorly setup can burn an extra 200 watts with zero extra hash.

So at op

what are your 8 cards?

is this 1 rig?

or 2 rigs?

how about some photos of the setup?

and do you run windows?
how do you clock the gear.

Hi boss @philipima1957 are you saying that if mining rigs are working at higher temp they will draw even more power? Well that's new cos I'm just hearing this for the first time, want to elaborate more on this cos I'm confused?

[philipma1957]

Just because the weather is 80 degrees doesn't mean your GPUs will be showing you 80°C, in door are always cooler even in hot weather, how about dropping your exact temp of your GPUs when mining?

1. Avoid aggressive overclocking
2. If you are on free electricity get air conditioner
3. If your GPU temp is around 50°C to 70°C they are safe

This is important.

A gpu rig poorly setup can burn an extra 200 watts with zero extra hash.

So at op

what are your 8 cards?

is this 1 rig?

or 2 rigs?

how about some photos of the setup?

and do you run windows?
how do you clock the gear.

Hi boss @philipima1957 are you saying that if mining rigs are working at higher temp they will draw even more power? Well that's new cos I'm just hearing this for the first time, want to elaborate more on this cos I'm confused?

I am saying cards have a max hash

say 40 mh for an amd 5600xt

and if you clock it wrongly it can use 125 watts to do 40mh

if you clock it correctly it can use 90 watts to do 40mh

same mh but 35 watts wasted due to bad settings.

Since you have 8 cards you could be off by 35-45 watts each card or 280-360 watts of wasted power.

Here are 2 nvidia 3090 cards they reset to 284+284 = 568 watts they do 113+113 = 226mh

I can do bad settings and draw 350+350 = 700 watts and do 114+114 = 228mh

you have 8 cards we do not know what they are and how they are set.  If clocked well good if clocked poorly more watts more heat not much more mh

[Stanlo]

Just because the weather is 80 degrees doesn't mean your GPUs will be showing you 80°C, in door are always cooler even in hot weather, how about dropping your exact temp of your GPUs when mining?

1. Avoid aggressive overclocking
2. If you are on free electricity get air conditioner
3. If your GPU temp is around 50°C to 70°C they are safe

This is important.

A gpu rig poorly setup can burn an extra 200 watts with zero extra hash.

So at op

what are your 8 cards?

is this 1 rig?

or 2 rigs?

how about some photos of the setup?

and do you run windows?
how do you clock the gear.

Hi boss @philipima1957 are you saying that if mining rigs are working at higher temp they will draw even more power? Well that's new cos I'm just hearing this for the first time, want to elaborate more on this cos I'm confused?

I am saying cards have a max hash

say 40 mh for an amd 5600xt

and if you clock it wrongly it can use 125 watts to do 40mh

if you clock it correctly it can use 90 watts to do 40mh

same mh but 35 watts wasted due to bad settings.

Since you have 8 cards you could be off by 35-45 watts each card or 280-360 watts of wasted power.

Here are 2 nvidia 3090 cards they reset to 284+284 = 568 watts they do 113+113 = 226mh

I can do bad settings and draw 350+350 = 700 watts and do 114+114 = 228mh

you have 8 cards we do not know what they are and how they are set.  If clocked well good if clocked poorly more watts more heat not much more mh

Problem for those who are running on battery back up and high electricity fee 🤣, anyways with core voltage settings and memory voltage settings one can go as low as possible, I suggest everyone who cares about power saving to grab a wattmeter before doing any experiments, wattmeter never lies

[bitcoinsc]

I have 7.. 3080 and 1 radeon 6800..
They are assembled with 4 gpu into 1 rig. So I have 2 rigs stack on top of each other. I'm mainly concern of the room temperature. Its hitting 91 f degrees in the room..
Its a detached house so I'm fortunate to have.


If u have to ask how I got the gpus. I came up on the bull run and used my initial investment to buy mining equipment. And did some trading following Twitter calls..  n then I got my initial investment back from trading..



upload image site

[Vann]

Adding fans without removing the heated air from the GPU's is not going to lower the room temperature. It's just going to circulate the hot air around the room which then continues to get heated by the GPU's. Short of using A/C, in order to lower the room temperature you have to physically vent the hot air out so that it's replaced with fresh air from the outside. Ideally you want a 'Push & Pull' configuration where you are pushing in fresh air from the outside and pulling out the heated air in the room at the other end. Another option is to create a mining enclosure which pushes in fresh air over the GPU's and then the air gets vented directly outside so that it doesn't heat up the room. Here is a video of this concept. Some people have also successfully used grow tents.

https://www.youtube.com/watch?v=59I1KvEpMco

[batsonxl]

The best option is air conditioner cools very good, but it consumes alot electricity. Other good option is make air circulation in the room, If inside 91 and outside is 80 it means you dont have good circulation. It can be done with 2 window or door. 1 window in 2nd window out. Dont open all window and doors it will be not better. According to your room and north you must decided from which side in or out.

[philipma1957]

I have 7.. 3080 and 1 radeon 6800..
They are assembled with 4 gpu into 1 rig. So I have 2 rigs stack on top of each other. I'm mainly concern of the room temperature. Its hitting 91 f degrees in the room..
Its a detached house so I'm fortunate to have.


If u have to ask how I got the gpus. I came up on the bull run and used my initial investment to buy mining equipment. And did some trading following Twitter calls..  n then I got my initial investment back from trading..


upload image site

so for you 3080's

 7 x 225 = 1525

 or 7 x 250 = 1750

or 7 x 300 = 2100

So  what are you doing with them power wise.

I can tell you at 225 watts you can get 94mh from a 3080

and at 300 watts you push to 101mh if lucky

Since heat is an issue what are they set to?

and a 6800 can set to 140 watts and do 61mh

or set to 200watt and do 64mh

so 7 x 75 = 525 + 60 = 585 watts difference gives you maybe 50 extra mh

hard on the cards and heats the room up.

So change to the lower settings and see what you get.

and

box fan >>gpus>>> box fan >>>window  moves the most air

[bitcoinsc]

One of my mobo is unreliable at oc.. I put the riser on backwords n it burnt the pcie. Lol so if I do alot of oc my comp restarts itself.

I only have one Window for air. I have a Top vent that I don't plan to use but its the best option lol. I don't want to use a ladder thats why. 

I might just use my inline fan to push air out along with my window fan. No air in. Just a fan blowing.. I should put everything in one window actually.. just waiting for my inline fan .. summer is almost here .. gonna be crazy.. might need a grow tent. I don't prefer it cus i have an empty room..

Oh yeh I saw that youtu.be  video .. he does it while a bunch of cars driving by.

[Commie]

Window fans are generally garbage, you want to use something more powerful than that for hot air extraction.

[bitcoinsc]

so i have set up my inline fan . its a 6 inch fan that blows hot air out. and i got a window fan that blows cool air in. its all stacked into one window however. It seem that my room is much hotter now??
before i had the window fan blowing hot air out..

i must admit the window blowing cool air in is quite cold at night time i couldnt stand next to it.

im getting a silencer to attach to the 6 inch inline fan currently running half speed.
i was thinking of getting another 6 inch inline fan to blow hot air out..
it seems too hot in the room. still trial and error.

or should i switch the window fan to blow hot air out and use the inline fan to blow hot air out too?
my ducting is quite long havent cut it. should i cut it shorter?

[MCcryptonia]

All this blowing out of heats doesn't make much sense to me than using a air conditioner, this will change heats to pure coldness unless you don't have free electricity, I think this is the best solution to heat than finding ventilations and fans blowing out heats

[Vann]

When you have <10 GPU's in an average room A/C is a reasonable option, albeit expensive to run. In a hot climate for an average 250 sq/ft room you need around 6000 BTU's in air conditioning just to cool a standard indoor room with no additional heat sources. With 10 or more GPU's in the room it's going to heat up quickly unless the A/C runs pretty much 24/7, which would be very expensive and your A/C would breakdown quickly. Best thing I did was add an 8" inline fan and vent the air through a crawlspace in the attic. It lowered the room and GPU temperatures dramatically.

https://bitcointalk.org/index.php?topic=4465680.msg40192306#msg40192306

[arielbit]

The art of cold air in and hot air out. The variables depends on your mining room, tweak and observe..observe and tweak.

[miner29]

All this blowing out of heats doesn't make much sense to me than using a air conditioner, this will change heats to pure coldness unless you don't have free electricity, I think this is the best solution to heat than finding ventilations and fans blowing out heats

Know how we can tell you dont mine on any scale at all...yeah its the AC....

And there is no need to use AC...20 degrees  F is what an ac unit will cool from ambient air input vs output temp.  You can google that...

So instead of being 120 F inside you can be 100F (or 80F from 100F) So from 37c to 27c....

You gpus will operate just fine at 70c ... or 158F....

Fix your airflow problem and you wont need AC even when ambient is 110F+ (43c+)