Experiment

[murpup569]

When you get a chance feel the back of your computer after it has been running for a while and post on this tread what outputs more heat the prossesor or the power supply

[Comessy]

For me it's the processor

[Laederem]

think about what you're asking here..

 

PSU(P) = (Power drawn from wall) - (Power drawn from wall * .80) = PSU TDP

If that number is greatly larger than what your CPU consumes during load (rated TDP), then your PSU generates more heat, which is extremely unlikely unless you have CPU and GPU under load or a real pile of shit PSU.

 

if you have no idea what your PC draws and only want to compare CPU and PSU, then add 100w to the TDP of your CPU and repeat the process described above. 

 

I didn't bother to try the numbers in my head, but I'm pretty sure the answer is CPU

[murpup569]

think about what you're asking here..

 

PSU(P) = (Power drawn from wall) - (Power drawn from wall * .80) = PSU TDP

If that number is greatly larger than what your CPU consumes during load (rated TDP), then your PSU generates more heat, which is extremely unlikely unless you have CPU and GPU under load or a real pile of shit PSU.

 

if you have no idea what your PC draws and only want to compare CPU and PSU, then add 100w to the TDP of your CPU and repeat the process described above. 

 

I didn't bother to try the numbers in my head, but I'm pretty sure the answer is CPU

I'm not following.

What is TDP?

Whould would I add 100w?

and I have this power supply if that helps.

http://www.amazon.com/dp/B008RJZQSW/?tag=pcpapi-20

[Guest]

Processor

[the ginger gamer]

think about what you're asking here..

 

PSU(P) = (Power drawn from wall) - (Power drawn from wall * .80) = PSU TDP

If that number is greatly larger than what your CPU consumes during load (rated TDP), then your PSU generates more heat, which is extremely unlikely unless you have CPU and GPU under load or a real pile of shit PSU.

 

if you have no idea what your PC draws and only want to compare CPU and PSU, then add 100w to the TDP of your CPU and repeat the process described above. 

 

I didn't bother to try the numbers in my head, but I'm pretty sure the answer is CPU

Actually i just did it and my psu is hotter, my pc is against a wall but i have a be quiet 140mm in exhaust and be quiet heat sink cooling a 4790k stock clocks. However my psu is a corsair cx750m and it has definitely hotter but not by a lot. 

[murpup569]

Actually i just did it and my psu is hotter, my pc is against a wall but i have a be quiet 140mm in exhaust and be quiet heat sink cooling a 4790k stock clocks. However my psu is a corsair cx750m and it has definitely hotter but not by a lot. 

That is the same power supply that me and a friend has same thing goes with all of us.

Every one is saying the prossesor (or just asuming) beside us.

I don't know

[murpup569]

Actually i just did it and my psu is hotter, my pc is against a wall but i have a be quiet 140mm in exhaust and be quiet heat sink cooling a 4790k stock clocks. However my psu is a corsair cx750m and it has definitely hotter but not by a lot. 

This one right?

http://www.amazon.com/dp/B008RJZQSW/?tag=pcpapi-20

[murpup569]

Processor

Did you actually test that?

[the ginger gamer]

This one right?

http://www.amazon.com/dp/B008RJZQSW/?tag=pcpapi-20

Yes except i have the semi modular one.

[Guest]

Did you actually test that?

I can tell with my hand, the CPU is much hotter than the PSU

[Laederem]

Actually i just did it and my psu is hotter, my pc is against a wall but i have a be quiet 140mm in exhaust and be quiet heat sink cooling a 4790k stock clocks. However my psu is a corsair cx750m and it has definitely hotter but not by a lot. 

 

 

That is the same power supply that me and a friend has same thing goes with all of us.

Every one is saying the prossesor (or just asuming) beside us.

I don't know

 

that's not how that works

 

if you had a watt meter I could mathematically show you that the CPU outputs more heat (UNDER LOAD) 

 

if the CPU is idle, odds it's still a toss up as to which outputs more heat, and using your hand as a measuring device is severely flawed. 

[murpup569]

I can tell with my hand, the CPU is much hotter than the PSU

Is is under heavy load?

This experiment is to see if my power supply is faulty.

I touched the metal of my power supply or the air around it and it is much hotter than my CPU.

[murpup569]

that's not how that works

 

if you had a watt meter I could mathematically show you that the CPU outputs more heat (UNDER LOAD) 

 

if the CPU is idle, odds it's still a toss up as to which outputs more heat, and using your hand as a measuring device is severely flawed. 

My prossesor isn't under load.

But the fact that my hand feels significantly hotter when it is next to the power supply tells me something.

your psu has the power of the whole computer + the wire resistance flowing through it, your cpu just has the power of the cpu flowing through it

then again, the psu is mostly copper wire and doesnt do much work, and the cpu is all silicon semiconductor and does most of the work in the pc

 

[Laederem]

My prossesor isn't under load.

But the fact that my hand feels significantly hotter when it is next to the power supply tells me something.

your psu has the power of the whole computer + the wire resistance flowing through it, your cpu just has the power of the cpu flowing through it

then again, the psu is mostly copper wire and doesnt do much work, and the cpu is all silicon semiconductor and does most of the work in the pc

again, you can't simplify anything that deals with thermodynamics down to what it feels like on your hand

you're not considering rate of dissipation, dissipation area, heat saturation, or fan speed

and the PSU puts out the difference in heat of it's efficiency rating.

If your system is consuming 150w and your PSU is 80% efficient then it's putting out 30w of heat.

if your CPU is using less than 30w then sure, the PSU is more heat.

[murpup569]

again, you can't simplify anything that deals with thermodynamics down to what it feels like on your hand

you're not considering rate of dissipation, dissipation area, heat saturation, or fan speed

and the PSU puts out the difference in heat of it's efficiency rating.

If your system is consuming 150w and your PSU is 80% efficient then it's putting out 30w of heat.

if your CPU is using less than 30w then sure, the PSU is more heat.

Ok, so ya that is another thing that I was thinking.

I have like 3 fans on my cpu and my psu has only one probably not even running that fast.

Ya, but I don't need exact mesurments, but it really make that big of a difference?

The power supply still feels hot so what would a solution to be for making my room cooler?

I'm putting a water block on my Gcard and cpu, but do you think that I have to worry about my psu.

Obviously I can't water cool my power supply besides mineral oil.

[the ginger gamer]

that's not how that works

 

if you had a watt meter I could mathematically show you that the CPU outputs more heat (UNDER LOAD) 

 

if the CPU is idle, odds it's still a toss up as to which outputs more heat, and using your hand as a measuring device is severely flawed. 

Im not arguing that it doesn't put out more heat, im shore it does, i was just performing "the experiment" which from my test shows that the psu was hotter to the touch than above it where the cpu is. Also something to help your argument is that with this test you are actually touching the psu while you are not touching any where near the actual cpu. 

[Sam Z Man]

If your PSU is too hot for your liking get one that has a better 80+ rating.

[Laederem]

Ok, so ya that is another thing that I was thinking.

I have like 3 fans on my cpu and my psu has only one probably not even running that fast.

Ya, but I don't need exact mesurments, but it really make that big of a difference?

The power supply still feels hot so what would a solution to be for making my room cooler?

I'm putting a water block on my Gcard and cpu, but do you think that I have to worry about my psu.

Obviously I can't water cool my power supply besides mineral oil.

it makes a big difference

 

there is no real solution unless you turn down clocks or get a more efficient PSU

 

and watercooling or oil cooling isn't going to do anything, that doesn't change the amount of heat the system puts out. 

[Sam Z Man]

Im not arguing that it doesn't put out more heat, im shore it does, i was just performing "the experiment" which from my test shows that the psu was hotter to the touch than above it where the cpu is. Also something to help your argument is that with this test you are actually touching the psu while you are not touching any where near the actual cpu.

I did the math and his systems PSU puts out more heat then his CPU.

http://linustechtips.com/main/topic/359997-temperature/?p=4881597

[murpup569]

it makes a big difference

 

there is no real solution unless you turn down clocks or get a more efficient PSU

 

and watercooling or oil cooling isn't going to do anything, that doesn't change the amount of heat the system puts out. 

Ya but I could redirect it into a different room.

[the ginger gamer]

I did the math and his systems PSU puts out more heat then his CPU.

http://linustechtips.com/main/topic/359997-temperature/?p=4881597

Wow that is actually quite surprising to me, however what percentage of load did you have the psu at when doing the math?

[Laederem]

I did the math and his systems PSU puts out more heat then his CPU.

http://linustechtips.com/main/topic/359997-temperature/?p=4881597

that's not right, but I cba to explain why 

 

maybe someone else will.

[Fred Castellum]

I'm not following.

What is TDP?

Whould would I add 100w?

and I have this power supply if that helps.

http://www.amazon.com/dp/B008RJZQSW/?tag=pcpapi-20

OP do some self research here... and read @Laederem's post closely. He basically answered your question already.

[Sam Z Man]

Wow that is actually quite surprising to me, however what percentage of load did you have the psu at when doing the math?

That was the 82% efficiency of a 80+ bronze power supply at full load.

Looking at it again because his system is only running the PSU at 60% load when the system is at full load which would make the PSU output more like 85-90 watts which is still a large contributer to the overall heat output.