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How much BTU's of heat does a computer generate?

post #1 of 6
Thread Starter 
I just wanted to get some input, I'm starting a build in a few days. I'm just days away from blowing probably $1,000 in parts to cool my computer. The reason I need to know the BTU's is because I will be doing a chilled water build, and need to know how many BTU's I have to fight off.

Now here is my understanding, a computer uses power....power that can be measured in Watts. Not all of those watts are converted to heat, but for the sake of safety let's say the computer is acting like a space heater and is 100% efficient converting watts to BTU at 100% efficiency.

Now my PSU is a seasonic 1000W platinum plus. So the max my computer can use is 1000 Watts of power.

now the conversion is 1 BTU/hr = 0.29307107 Watts.

So 1,000 watts = 3,412 BTU/hr of heat by my calculations.

is this correct? or if it creates more heat, please explain to me how you can generate more heat from a set amount of wattage? Am I using the correct formula? If not please provide a correct one.

Thankx guys.
post #2 of 6
The 1000W is a max rating, the computer will use much less, maybe even 20x less at idle.

And to my understanding, unless you're running a heat pump (and thus cooling somewhere else) the heat you release can't be more than the energy that comes from the outlet.
post #3 of 6
1000 watts is like 3500 BTW I think, I have an aquarium chiller for my rig and it does fine. It is rated at 4K BTU, and my rig draws like 470 watts under full load.
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Black Lightning
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post #4 of 6
Thread Starter 
Quote:
Originally Posted by ionstorm66 View Post

1000 watts is like 3500 BTW I think, I have an aquarium chiller for my rig and it does fine. It is rated at 4K BTU, and my rig draws like 470 watts under full load.

yea, that's what I figured. I doubt my rig even with overclocking will generate more then 2,500 BTU's. I want to use a 5,050 BTU window AC for my loop. Plan on placing it in the attic above the computer room wink.gif But some people been telling me that's not enough, and I couldn't for the life of me understand how a 5,050 BTU AC couldn't keep up with a computer that could at max pump out 3,500 BTU's....even with efficiency lose due to me building it myself.
post #5 of 6
The only issue is that a cheap window unit won't last long running max 24/7.
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Black Lightning
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post #6 of 6
Thread Starter 
Quote:
Originally Posted by ionstorm66 View Post

The only issue is that a cheap window unit won't last long running max 24/7.

Won't run max, will have a thermal switch on it to turn it on/off, want to hold about 15-20c on the coolant. ie. Cool down to 15, turn off, when hits 20 turn back on.
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