How room temp. affects processor temp. (graphs)

[graysky]

do you even see the problem here with the cpu temp going up by double the increase of the room temp?

Well, the data is the data. I think unless you attach a leaf blower or something outrageous like that to your case, it won't be 1:1. You ever stick your hand in there? It's warmer than room temp given all those heat producing components in an enclosed space. It stands to reason that it would be warmer.

[jas420221]

do you even see the problem here with the cpu temp going up by double the increase of the room temp?

Thermodynamics>you.

Got any proof to the contrary or is that just (hot air) your opinion?

[Spawne32]

No proof, yet, but id like some kinda explanation as to why his theory is correct, other then numbers in a nicely colored graph on microsoft excel, because to me this sounds like the same thing as me fighting with my mom in the summer over the a/c, she for some reason thinks that 68 degrees in the house in the winter is hotter then 76 degrees in the summer. Go figure.

[David_L6]

measured with TAT. My case is a centurion 5, which as 80mm intake and 120 exhaust. I use tuniq tower but i think i have bad contact.

So far, i have not had any stability problems but my load temps are 62c-65.

Today, it is not has hot as yesterday. So i am idling 47c right now.

Buy one of Cooler Master's 4-in-3 Device Modules and install it so that it's blowing air in towards your CPU cooler. I added one to my Centurion 5 and was impressed enough that I bought another one and installed it in my CM Stacker 810 (in addition to the one that came with the case).

[graysky]

No proof, yet, but id like some kinda explanation as to why his theory is correct, other then numbers in a nicely colored graph on microsoft excel

It's not a theory, just an interpretation of some data errrr... "numbers in a nicely colored graph" as you put it :P I'd challenge you to do a similar experiment and see if your temps track 1:2 like mine did or 1:1 like you are suggesting before you attack the work others have done based purely on your own speculation with no experimental data of your own to back it up.

because to me this sounds like the same thing as me fighting with my mom in the summer over the a/c, she for some reason thinks that 68 degrees in the house in the winter is hotter then 76 degrees in the summer. Go figure.

I don't understand this last bit... can you explain how this is similar?

[jas420221]

It's not a theory, just an interpretation of some data errrr... "numbers in a nicely colored graph" as you put it :P I'd challenge you to do a similar experiment and see if your temps track 1:2 like mine did or 1:1 like you are suggesting before you attack the work others have done based purely on your own speculation with no experimental data of your own to back it up.

Well put!

[Spawne32]

It's not a theory, just an interpretation of some data errrr... "numbers in a nicely colored graph" as you put it :P I'd challenge you to do a similar experiment and see if your temps track 1:2 like mine did or 1:1 like you are suggesting before you attack the work others have done based purely on your own speculation with no experimental data of your own to back it up.



I don't understand this last bit... can you explain how this is similar?

LOL u wouldnt understand its a family thing, but ill take you up on your offer, as soon as i have some free time. Right now im really busy with my own website and i just got some parts in from thermaltake that need reviewing

[RobNyc]

hehe so this is what I do.. since I know my room is like 80-100F in the summer.
In the night I put warm clothes on, turn on my a/c either low or high and overclock my rig and I'll see how temps will be, then during the day when the a/c is off windows are open , underclock again.

[graysky]

Updated 15-May with two higher temp points. It was like 85 °F outside today and I left the A/C off. Room got hot so I ran two additional points at about 76 and 77. Anyway, as you can see, it's all linear up to 77.5 °F and I suspect it'll continue that way if it gets hotter.

[shadow_419]

No proof, yet, but id like some kinda explanation as to why his theory is correct, other then numbers in a nicely colored graph on microsoft excel, because to me this sounds like the same thing as me fighting with my mom in the summer over the a/c, she for some reason thinks that 68 degrees in the house in the winter is hotter then 76 degrees in the summer. Go figure.

You're mom feels cooler in 76F in summer becuase of our built in cooling system.
The evaporation of sweat is enough to keep her comfortable. Everyone is different since what you or I may find as a confortable temp will differ. Thanks.

[Spawne32]

You're mom feels cooler in 76F in summer becuase of our built in cooling system.
The evaporation of sweat is enough to keep her comfortable. Everyone is different since what you or I may find as a confortable temp will differ. Thanks.

i attribute it more to menapause, but ok?

[graysky]

Updated 19-May: Fixed a small error and put formulas for both °F and °C (of your room temp) on the graph. The relationship is: for every °F change in room temp, the load TJunction changes by 1-1/2 °C. Well, this is true for my system, YMMV...

[adamsleath]

i have also found the room temp to cpu temp to be directly proportional as per your graph.

i use a/c in summer.

[Cronos]

Updated 19-May: Fixed a small error and put formulas for both °F and °C (of your room temp) on the graph. The relationship is: for every °F change in room temp, the load TJunction changes by 1-1/2 °C. Well, this is true for my system, YMMV...

The correct formula is 1F=9/5 C. This is true for everyone, as it is just exact definition. There is no real physics here.

As for difference between ambient and core, it is almost exactly 1:1. The deviation from this rule is so small that you cannot detect this.

[serialk11r]

The correct formula is 1F=9/5 C. This is true for everyone, as it is just exact definition. There is no real physics here.

As for difference between ambient and core, it is almost exactly 1:1. The deviation from this rule is so small that you cannot detect this.

Yep, in the range of temperatures the average location on earth, the thermal conductivity of copper/aluminum/thermal paste/air will not differ great enough for us to see a big difference.

[graysky]

Well, my point in giving both formulas was to let people see the relationships with the empirically derived data. Yeah, you can go from C to F if you multiply with 9/5 then add 32

[brandinb]

all that data says to me is his cpu runs 31-34c over ambient temperature it seems pretty cooralitive to me.

also as temperature rises so does leakage so the graph accelarates a tiny bit as teh temp gets higher

[graysky]

all that data says to me is his cpu runs 31-34c over ambient temperature it seems pretty cooralitive to me.

also as temperature rises so does leakage so the graph accelarates a tiny bit as teh temp gets higher

Well, the slope of the line (0.8302) tells you that for every change 1 °F in room temp will change the CPU temp by 0.83 °C.

[serialk11r]

Well, the slope of the line (1.4954) tells you that for every change 1 °F in room temp will change the CPU temp by 1.5 °C.

Huh? Don't you mean it will change 0.5555 C?

[graysky]

OOps, had them backwards.

[brandinb]

ya i would rather just stick with one standard of temp measurement really.

[serialk11r]

Damn I really wish the US would switch to Metric...Celsius is so much easier than this stupid fahrenheit scale. I made the mistake of getting used to C, so now when I want to express the temperature I have to multiply it by 1.8 and adding 32

[dinos22]

Damn I really wish the US would switch to Metric...Celsius is so much easier than this stupid fahrenheit scale. I made the mistake of getting used to C, so now when I want to express the temperature I have to multiply it by 1.8 and adding 32

you said it brother

[graysky]

Ha, we're a bunch of rebels in the US. After all, the country came out of a bloody revolt. I believe that's why we use the F scale, and drive on the right side of the road, and call soccer, what the rest of the world calls, football

[RobNyc]

Well guys.. I just got my new cooler and temps ambient and weather have been high 80's and very humid. My new cooler with stock fan is still giving hardcore 32c .. idle 38c full load. With SilenX Ixtrema 120 90cfm fan 27-29c idle, 37-38c full load .. I love rev.B