How much effect does weather have on Temps?

[0810]

Okay. My normal CPU idle temps is around 33c and my gpu temp idles at 50 or 51 and my HDD is around 35. Today is a hot day in the city and my room is very warm. Right now, my cpu is at 40, gpu at 54 (EVEN with an Antec 80 mm fan stuck to a ppci slot cover under it!) and my HDD is at 40. Is it normal for weather to make such a difference in temps?

its about 90 degrees outside and i live on the second floor and my room is about 85+ degrees

the back of my psu feels really cool for some reason

 

[2uantuM]

probably lacking airflow too. I have to replace my stock fans in my lili pc-60. With the side of the case off, my temps are around 33C idle. WIth the side of the can on, around 42. On hotter days it will go up to 46, so yeah, weather does play a roll.

 

[0810]

i always wanted to replace the heatsink becuase i have a stock amd hs and fan. but also wondering.. when you replace it, you have to take the mobo out and put the base under it right? im not confident enough to do it myself

 

[2uantuM]

if you're running an athlon 64, no you dont. I just unscrewed my current bracket, put the bracket for my xp-120 on inplace of it, and then just clamped her on.

 

[0810]

i have an a64 3200+ s939 venice on a8n-e, i was either thinking of the xp-120 or the arctic freezer 64.. so no mobo removing? about when removing the HS, cuz in my old intel, when i remove the HS, the cpu is stuck onto the bottom even though the socket is in lock mode, then i have to pop the cpu off and put it back in. i once bent like 18 pins doing that and managed to straighten all of em

my current system is fairly new and i dont wanna screw it up

also, doesnt the zalman require you to put the bracket on the bottom?

what 120mm fan do you use with your xp120?

 

[2uantuM]

I use the medium speed Panaflo on my XP-120. It's fairly easy to install, and the performance is excellent, so its probably your best choice. I havent used the Zalman coolers, but their new cooler is *supposed* to be better than the XP-120, so wait until the end of july to buy.

http://coolerguys.com/840556001096.html

To get your CPU off without ripping the cpu out of the socket (which i did with my stock HSF), just slowly turn your heatsink back and forth with a light pull and it should eventually come off.

 

[0810]

after reading about how to install the HS, im more worried about applying the thermal compound.

 

[tanjO]

Dude, it's ok to be worried about doing it, components are not cheap these days!, Well if u want my advice, just take your time, make sure ur in a good enviroment to do it, and a cool room i suggest this because i hate working on things im not 100% confident about in a hot stuffy room, tends to make me all hot and bothered and end up rushing it. apply the thermalpaste in the reccomended way for your setup. If you really are bothered about doing it take it to your local pc place and ask them to do it, it may cost you but at least you know it's safe in there hands (Hopefully )

 

[0810]

should i get the arctic cleaning liquid with it as well then?

 

[BigTaf]

everyone worries the first time

The only way your going to remove the worry is to try, everyone has popped atleast one peice of hardware at one time or another, but rarely do you make the same mistake twice

 

[domoMKIV]

Okay. My normal CPU idle temps is around 33c and my gpu temp idles at 50 or 51 and my HDD is around 35. Today is a hot day in the city and my room is very warm. Right now, my cpu is at 40, gpu at 54 (EVEN with an Antec 80 mm fan stuck to a ppci slot cover under it!) and my HDD is at 40. Is it normal for weather to make such a difference in temps?

its about 90 degrees outside and i live on the second floor and my room is about 85+ degrees

the back of my psu feels really cool for some reason

those temps are nothing to even remotely be worrying about.

but of course weather makes a difference, if a room is 75F, things are going to be cooler than the same room being at 90F.
how you sit in a room that hot though is beyond me!

 

[tanjO]

those temps are nothing to even remotely be worrying about.

but of course weather makes a difference, if a room is 75F, things are going to be cooler than the same room being at 90F.
how you sit in a room that hot though is beyond me!

Yes, Bare that in mind, these are fine temps to have and deffinatly NOT ones u should be worrying about. escpecially if your getting these on a very hot day

 

[0810]

I know its nothing to worry about but, ive gotten MUCH LOWER on air. and just by knowing i can get that low gives me some mental standards about my temps.'

ie. you know how some people are crazy about getting as much FPS as possible in games even thoguh they wont notice a difference between 200 and 60, its just knowing you can get that low... kinda like bragging rights : )

EDIT: I just removed my HS with out the CPu sticking, i didnt even twist... just popped off the pins and it came off..

 

[0810]

WOW, weather does play a major role, right now its morning and its very cool right now, CPU idle is 27, GPU idle is 40 and HDD idle is 27

 

[tanjO]

WOW, weather does play a major role, right now its morning and its very cool right now, CPU idle is 27, GPU idle is 40 and HDD idle is 27

lol

 

[chusoblu]

Weather definitely affects temperatures. On warmer days, you are recirculating hot air.
I have two 80mm intake fans, one 80mm blowhole, one 120mm exhaust fan and also the additional two 80mm fans mated to the PSU, adequate I would say. With the recent warm weather we are receiving in California, my case temps jumped a significant 10 degrees F.

 

[freddiepm61]

put it this way.
if you pump warm air over something then it will be warmer than if you pump cold air over something.
simple
f

 

[[Tripod]MajorPayne]

Yeah, those laws of thermodynamics, darn them!

Your temps are fine, man. If you want to change the heatsink, all you have to do is just take your time and go slowly. Read the instructions and ask for advice here if you need it. I'm waiting for Ice Czar to come in here and post his dogma about how every 10C increase in temperature decreases life of components by 50%, and conversely every 10C decrease in temperature increases life of components by 100%

Good luck, hopefully it will cool down sometime soon. 85+ room temperatures are unbearable, especially for a naturally hot person like me. I'm uncomfortable right now in a 76 degree room.

 

[Ice Czar]

seems Im late

actually Id likely pass on that maxim in favor of this one : Q=k/L(T1-T2)

Heat transfer is all about temperature differentials. Conduction through materials and convection away from surfaces is proportional to the temperature differential that exists. Basically the thermal resistance of a given solution changes with the temperature differential, which is why thermal solutions are rated in °C/W which leaves that variable ambient open but gives you a formula

from the above link

We can draw some interesting conclusions from this equation. First, heat transfer is proportional to the temperature difference on the object. If the temperature differential doubles, the heat transferred doubles. Second, the conduction coefficient "k" is proportional to heat transfer. If the conduction coefficient doubles, the heat transfer doubles Alternatively, for the same differential temperature, twice as much heat may be transferred. The final observation is "L". As thickness increases, heat transfer decreases. Alternatively, to maintain the same heat transfer through a material twice as thick requires twice the temperature differential.

thats for conduction or convection its Newtons Law of Cooling that addresses the same thing

its been so hot here recently in the afternoon my AC simply doesnt have a big enough condensor air interface to dump all the heat with that small of a temperature differential and Ive been overwhelming my thermal solution, Ive just put in a duct from the basement through a closet on the 1st floor and into the computer room on the 2nd floor inorder to take advantage of the basements "earth cooling" effect and use that air to cool condensors and rads in the summer (it will pull outside air in the winter) it will be supplementally cooled in the basement with a evaporative cooler (swamp cooler) which considering how dry it is here will work well, with the added benefit of acting as an air cleaner in the workshop in the basement (for particles that escape the dust collection system).


>>>>>>>>>>>>>>>>>>>>>>>
°C/W addendum as applied to a CPU heatsink

Delta = CPU temp - Ambient Temp
C/W = Delta / CPU Watts

Interpreting C/W: For every watt the CPU radiates, each system will cool the core by the (C/W x watts) plus ambient temp. For example, at an ambient temp of 25 C, a C/W of 0.25 with a CPU radiating 50 watts means that the CPU core temp will be 50 x 0.25 = 12.5 C over ambient temp, or 37.5 C. The lower the C/W, the better.
>>>>>>>>>>>>>>>>>>>>>>>>>

and obviously the lower the ambient

while the temperature differential is likely the biggest impact on a thermal solution (even an AC needs to dump the heat somewhere as my case illustrated) the other 2 factors that matter are the transfer interface area, be it the size of a heatsink or the size of a radiator or condenser.

and the volume of transfer medium, be it a refrgerant, water or liquid coolant or simply air
the pressure also enters into that.

design effects most of those from the resistance of medium flow (in a pipe or a case) to transfer effects like impinging jets (White Water Blocks) evaporative cooling, spray cooling (a form of phase change) to material selection (say copper over a steel block\heatsink)