VF900Cu heat problem...

[Ruiz]

Just registered to post here

I got the same problem with vf900. I know we always think the other user is doing something wrong when the results are not what they should be, but i am 100% certain that i did everything right, and still i got a horrible result with my vf900cu (38idle, 95+ load).

Just as an information, i use my case always open, and i have only one fan blowing air out. The vf900 fan was always at 100% (a little noisy at 100% i have to say)

Also i have some theories of why some people have bad results and other have good results. In my case i installed the cooler in my x1900xtx 5-6 times with artic silver or the default thermal grease.. I always got the same results!! But yesterday i tried for the last time before returning it to the store and bang!! max temps topped at 75!! I got really happy and then moved my computer to the other room, plugged it in and .. same old results.(95+)

At this point i got really pissed and started to think about what could possibly change from my room to the other.. The only difference was that in my room i was testing with the case laying down (i dunno how to write in english)... hhmmm in horizontal position but when i moved i put it standing vertical, the normal way. So i realized that when i put it in horizontal position, the heat went from the fins and rise, going out of the case.. When i put it standing the normal way, the heat got stucked and temperatures rise non-stop despite the fact that my case is open. Maybe people that have good results also have some air flowing in the graphics card area, blowing the hot air off.

Here is how the temperatures rise when i put the case standing. You can see a constant 75 until the point where i change the position to vertical:


Also another thing i noticed is that there is a big difference between the two "fins groups". As you can see, this cooler have two groups of fins each with a heat pipe:


One group above and the other in the botton. In my case i noticed that the lower group in much hotter than the upper group.. really burning my fingers!! The upper group is just warm to the touch.. maybe the heatpipe can't split the heat between the two groups of fins due to some defect in the building process or even the construction is faulty. Just a guess

Anyway i'm returning mine and i didn't plan to pick another. Thats a good cooler for gf7000 series but when you have a x1900xt(x) you need a really good air flow in your case (making the cnps useless) or a lot of luck so you dont get a faulty heatpipe.

This is another thread i made talking about that.. but its in a Brazilian forum (portuguese):
http://www.forumpcs.com.br/viewtopic.php?t=166669