here is a complicated question for the experts, I will very much appreciate any help with this.
I have an embedded PC (AAEON AEC-6920), with a fanless motherboard (it cools through the alluminium case, with gets quite hot). It´s quite a small, compact PC, almost like a laptop, although it has PCI-e, PCI and PCMCIa connections. To run a certain program (MaxSea; I am not using games)I needed more graphics memory (512 mb) than the graphics on the motherboard so I installed a Geforce 7300 GT Silent 512mb in the PCI-e slot (this card doesn´t have a fan either).
My problem is that after a while the graphics card reaches 125ºC according to the GeForce driver program, and the image on the display starts blinking a little. I am seriously thinking of replacing this card for one which doesn´t get so hot, and these are my questions:
- Which would be the lowest temperature 512mb card available (with a fan, I guess), taking into account that I don´t need extreme power, since I am not gaming?
- Since the embedded PC does not have a fan itself and it´s quite a closed, compact case, does it make sense to have the fan in the graphics card running inside the case without any opening; I mean, could the hot air flow damage other components in the PC?
You shoudl stay away from a GPu with a fan, that will require airflow you don't have as the heatsink alone would be very insufficient. There are many passively cooled cards around.. Are you limited toa compact form factor or will a full sized card fit?
Remember that a lot of fanless cards are not designed to be in an environment that has no airflow. they are jsut designed to be silent. You will probably need one with a quite sophisticated cooling solution.
I am not limited to a compact form factor, in fact the GeForce 7300 GT silent is a normal size card. I chose this fanless model because the computer has no fan on the motherboard either, and there is almost no air flow inside, so I thought I was "following the logics" of this computer. But since the GPU is reaching this extreme temperature of 125ºC (that´s hotter than boiling water!) I thought a graphics card with a fan would be able to keep the temperature down. But it is true that there is no air flow inside, so I don´t know what could be the best solution.
The thing with passive cards is they are generally designed for low noise, not for a passive computer. They still have heat sinks that still, usually, require airflow to keep cool.
Now, depending on how tight the case is an active cooled card may work alright, or it may not. It might just swish the air around a lot and still end up at the same temps as a passive card.. You'd want to look for one that has an exhaust.
Mhmm...maybe rig something up that shoots air into the slot above your pci-e slot thus allowing the gpu to intake air and the air to cross the pcb along its way to the gpus intake and out the gpu exhaust....
Taking your comments into account, I have been considering two options:
- An internal graphics card with an exhaust: could anyone recommend a model with an exhaust and a low temperature performance?
- An external graphics card than can be connected to the computer. That way the heat would stay outside the computer case... Does anyone know an external graphics card which is actually being sold? I have not been able to find one that is actually in the market. Besides they seem to connect via the express card socket, which this embedded PC does not have (it does have PCI-e, PCI and PCMCIA sockets).
Any ideas on my previous post would be very welcome. Does anyone know an external graphics card which is actually in the market? Or an internal graphics card with an exhaust on the outside, besides the connectors?
Uncfan, you have a point there. The computer is an industrial embedded PC, very compact aluminium case, which cools by heat radiation through the case, and it does not have any openings. I had thought about making a couple of holes in the case, but I was not sure if that would do any good. In your opinion, would that really make a difference in the temperature of the system?