Thanks my friend.. And yes, it was a little more than I first expected starting the test. Forgot all about the short time support of Ubuntu 12.10. That's why it's great we got it to work using 12.04, even though it's an older version of it
There's a few "hickups", but nothing really hard to solve. Just takes some time, which I'm not prepared to use right now.
OK, it's time to change the fans and see if the new fans, which runs twice as fast, will make a difference
Thanks for checking in on me Tex
Got a few pictures I would like to show you. Mounting/placing the sensors on the GPU's. A little harder than you might think to begin with
Image 1. Case/chassis heat issues
Red: Here you can see the air flow from the 3 out of 4 chassis/case fans. Being placed the way they are, I always guessed, that GPU4/graphic card 4 (next to 2U PSU - in the bottom of the image). As we know now, it's not this card which gets hottest. It's card 3. The little red box in the lower right corner of the image, is where the 4'th fan is placed. This points directly at the intake/fan1 in the 2U PSU. It's good for the PSU, but not for the GPU's
Green: This is the area which I thought would make the biggest issues, because of the limited space between PSU and GPU 4's heatsink. I'm not quite sure why this isn't so. Is it because of the materials the heatsinks are made of (the 4 graphic cards heatsink is not quite the same. The metal looks different on some of them) Maybe it's paint, I dont know). Normally this would be a great reason for a new another test, but in this cae we just press on with the test we are doing
Blue: Here you can see that I've didn't mount the "low profile vga brackets". I only did that on the first card, because I use this during the first part of the installation. When the set-up/installation is done, it'll be unmounted as well. I leave area open, because of the hot air. To make it easier for the fans to blow the hot air out of the case.Image 2. Showing the "missing" low profile vga brackets & air-flow.
Green & Red: As written above, the space between the 2U PSU and GPU 4/graphic card 4 was always my guess on coursing the heat issues. It was heat issues to me, because the temp. got very high, close to 70 degrees celsius inside the case and this increased the temp. of the other stuff inside. And it burned my fingers as well. This was too hot in my opinion
I like this to be a stable running system which will be able to run for 10 years without any trouble and need for repairs.
Blue: I keep these open, so that the fans has a chance to blow out the very hot air. This case is very ventilated, but the air-flow is really wrong when using the rear side brackets etc. I like to be able to control the direction the air is moving. I don't like the hot air to come out in the front, when all fans, the CPU fan included, is pointing backwards Image 3. Where to place the sensors.
Red: Here you can see the sensors we need to mount. In this case we mount it directly on the heatsink. It's very important that the sensor is placed in such a way, the air flow from the fans doesn't hit it directly. It's a bit difficult, because there's really not a lot of room here. but it's possible.Image 4. Mounting the sensor & securing it to the curcuit board.
Red: Here you can see where to place the sensor. Use the tape which comes alog with AeroCool X-Vision, but use an extra peace of tape to keep it in place. I use a special kind of tape, which in Denmark is called "Fe-hud" (fairy skin). It's the kind you use when placing stuff on e.g. a articel before you copy it on the xerox
Green: The plastic which protected the sensor, I use to protect the little sticker (showing sensor number) and to protect the wire against heat. It eases the mounting of the wire as well.Image 5 & 6. Using a strip* to mount and secure the sensor from falling of (* is it called a strip over htere??)
Red: Here you can see how I mounted the wire using a "*strip". This way it's kept in place and the sensor will not fall of when working on the case/chassis. Please notice the little hole in the top right corner. It's very nice of Asus to make such a little mounting-hole in the circuit board for us Image 7 & 8. Placing and securing sensor on CPU.
Red: On image 7 you can see the whole CPU area, where the sensor is being placed. On image 8 you can see it a little better. I chose to place the sensor where I did, because it's the place closest to the CPU. It's a good place because it's not directly in line of the air-flow from the fans. The sensor is secured the same way as the sensors on the GPU's using a *strip and the plastic tube. (the plastic tube is used to protect the sensor during installation) It's possible that we can find a better place for the sensor. The numbers are not exactly the same as the internal sensor. Of course not, but it would be nice to be a little closer to "the truth". Or maybe not!? Maybe it's a good thing to know the difference between the inside of the curcuits and the temp. right next to them. I would love to hear some remarks regarding this matter from you overclockers
I know you know a great deal about heat and temperatures
So please get back to me on this
Question!! What's the right word? Sensor is ...... placed/installed/mounted ????....more to come
.Edited by DanHansenDK - 8/20/14 at 9:02am