Cooling not getting normal CPU temps with xp-90

i have 2 exhaust fans, one on the top and one on the back of the case and 2 intake fans at the bottom fron. i have a xp-90 heatsink. i'm getting temperatures like 38C for CPU, 47 for chipset and 47 for PWMIC. my CPU should be in the low 30's. i' reapplied the thermal paste twice and i'm pretty sure i did it by the book. my video card is overclocked and my ram is at 3.3V. but those shouldn't really affect that temps that much. it's just really bothering me cuz it makes my room so hot.

 

It's not going to make any difference to the temperature of your room. The CPU will still be dissipating the same power no matter what heatsink you have...

 

Exactly, and 38's nothing to worry about, I say forget about it and open a window if it's too hot

 

He's getting miffed due to the fact that the case is expelling such fugging hot air. Word of the wise - freaking hot room = not enough intake and exhaust through your case. Believe me, my LGA heater used to warm the room. After upping to a PC-76, it barely warms the air

 

that doesn't make any sence. If your room is hot because of your computer, then your cooling your computer very well because the heat is outside of the computer, not still inside it.

A good cpu cooler will make your room even hotter, because the heat from the CPU is getting moved from the CPU to the air in your case, which goes out the back of the case and into your room, thus making it hotter.

 

There won't be any difference in room temp between a good cooling solution or a bad one. It'll either be a case of alot of warm air coming out of the comp or not so much air but much hotter. Both of these situations add exectly what your comp is consuming to the ambient. It has to or else the comp temps would continue to rise until melt down.

 

Exactly.

 

Insufficient airflow inside a case will cause a room to heat up. Why? The longer air sits in your case, the hotter it gets. But, if you have a steady slipstream of air throughout the case, then the air can't heat up too much, and room temperature should be stable. I also observed this ages ago with X-Sonic (based on the same chasis as the lanboy). Bloody thing got so hot inside (with WCing too!) that the room would go to a slow broil. After i bought a dragon and fitted her up with the full compliment of fans, the room stopped getting warmer.

 

Why, indeed.
I don't believe this is true.

Irregardless of the cooling solution, your PC is putting out X amount of heat.
Whether this heat is efficiently extracted from the case will matter to your components, but not the room- it will see the same amount of heat either way.

 

Exactly!

If the PC is emitting X Watts as heat, it'll be emitting X Watts whether you're venting the heat out of the case quickly or slowly. Either way, the room just sees the computer as a heat source emitting X Watts...

 

How hot your room get's is nothign to do with airflow through your case.

There's no such thing as normal temps. First off your sensors are probably inaccurate and giving odd readings. Second you can't compare different systems temperatures because of the countless variables: ambient temp, airflow, sensor accuracy, CPU heat output etc. They will be different for everyone.

 

That's just downright wrong... In an hour, your CPU will put out the same 89 watts (or whatever, I'm assuming it's W/hr, but regardless of the time unit it's the same idea). You can have no case at all or have three inches of house insulation on the inside, you're still adding 89w of heat to the room every hour. It just depends how quickly it's dispersed to the rest of the room. It could be that the area surrounding your computer is 100f and the rest of the room is 70f, or it could be 75f all around. What you're saying is basically like saying that if you put boiling water on a mug and then put a lid on the mug, the heat will just disintegrate because it has nowhere to go (because, of course, it couldn't possibly convect through the ceramic)

Of course it may not be 89w, but something sticks out in my mind as being 89w. Whatever it is, it's the same idea. And to convert watts to BTUs, multiply by something like 3.22.

Now ARGUABLY, you could note that as transistors run hotter, they naturally draw more power (which, by the way, is how processors actually overheat - the transistors draw too much power and blow - as silicon's melting point is something like 1100c. You could take a blowtorch to a processor on a workbench, scrape off any deposits of crap and assuming you didn't damage the packaging it should work fine) So a hot case will have a processor generate more heat than a cool case. But you're not talking enough of a change to back up anything.

38c is fine for a heatsink, in fact it's downright nice. All those guys saying "oh yeah my proc runs 28c and it's mad overclocked" fail to mention it's about 46f in their room so they need a coat to use their computer.

And as was noted, sensors can be off. My old Abit IS7 read about 10c hot. Something like 48c with an XP120, and the ambient was probably 70f/21c. Yeah right. Don't read into it much - if you can get a better overclock or use a quieter fan, that's really all that matters. It running hotter won't do a thing to reasonable lifespan - by the time it would die, it would be sub-ubercrap anyways (more valuable to melt the gold off the pins and sell the .0001oz you'll get than selling the processor)

 

Your analogy with the coffee cup seems wrong. Heat IS convected (or whatever term it is) through the ceramic. Ever tried holding a cup without using the handle from a freshly made mug? Yup, it's flippin' hot.

My case has one fan drawing in air, another fan at the back drawing air out and fans over heatsinks inside and with use, my room does slowly warm up. It's always done it, whether it be a P3-1ghz machine or an A64-3000 setup. Unless the room you're sat in has airflow, it's going to warm up. Why do you think they put aircon units in server rooms?

 

I think you'll find Firehed was being sarcastic...