Compaq V2000z CPU Fan Direction

Hi,

I got a question regarding about the CPU fan direction. I bought a laptop cooler and the fans on the cooler is drawing in heat from the bottom of the laptop and exhausting it in the back. So if the CPU fan is drawing air from the bottom, then the laptop cooler is not helping with the airflow. But I might be wrong and the CPU fan is drawing air from the back of the laptop and exhausting it on the bottom which the laptop cooler will draw in and exhaust it.

So the question is, which one of these are correct:
1) Air is drawn from the back of the laptop and exhaust from the bottom
2) Air is drawn from the bottom of the laptop and exhaust from the back

-Thanks

 

The fan on the bottom is for air intake and the exhauster is in the back. The cooler does help because it keeps the bottom cool, so the CPU fan draws in cool air or even directly blows in cool air because the fan on the CPU is rarely on (you undervolted, right?). Further, the cooler should help a great deal with HDD temperatures, which are of far greater concern with this notebook due to its thin design.
I use l2000 (virtually the same laptop) and my HDD stays between 42-48C, 49C (only 512mb RAM) depending on the ambient temp. When burning DVDs or transferring large files it goes above 50. My CPU usually stays at 49-52C when I don't use it, which is absolutely normal because the CPU can take up to 90C if needed. My HDD, however, shuts down at 56C!

The cooler should bring down these temp by about 10C. Do you mind telling us what effect does your cooler have on the notebook?

 

Hi,

I didn't undervolt my CPU. Not sure if I want to but will research more on it. Also, I don't have any temperature reading programs. Once I find one, then I'll post up my temperatures.

Here's a picture of the laptop cooler that I own:


What I did was removed the two stand offs so that the laptop would sit flat. I'm use to typing on a flat keyboard than an angle. So here was the two setups I been trying out.

*assuming the CPU fan is drawing air from the bottom*

Two fans on top, one on bottom: The top left fan is directly underneth the CPU fan. This will draw away heat underneth the CPU and also draw in cool air from the outside so that CPU fan can use. The bottom fan will draw heat away from the harddrive but not as efficent as the next setup. Also, I have no clue what good use the top right fan has.

Two fans on bottom, one on top: The bottom left fan is directly underneth the harddrive. This will do a better job of removing heat from the harddrive. The top fan is underneth the memory and will draw heat away from it but also it will draw in cool air from the outside allowing the CPU fan to use the cool air. Not as efficent as the "two fans on top, one on bottom" setup but should do an okay job. I have no clue what the bottom right fan is doing.

I think I use the "two fans on top, one on bottom" setup since if the CPU gets hot, it has a fan already to cool it. If the harddrive gets hot, there's nothing to cool it so having a fan underneth it should help a lot.

Any comments or suggestions?

-Thanks

 

I think you should provide as much relief as possible to the HDD. This would be two fans on bottom, one on top (the bottom is where the HDD is).
I think you should reinstall the stand offs of the notebook so that the fan of the CPU can work without problems. Btw, IMO the cooler is supposed to be placed in such a way so that it can cool the GPU (that is the fan which now remains with dubious purpose). V2000z will not need this but dv4000 with x700 does need it.
Check the undervolting thread; it is really a good thing and pays off well.

 

Hi,

I can't install the standoff. If you look at the picture, the two standoffs are on the side with the two fans. If I have the two fans on the bottom, the stands off will rise the harddrive area of the laptop which will make it difficult to use.

I will also look into undervolting the cpu.

-Thanks