Originally Posted by >(SLuG>
Thanks guys, I am going to order some thermal tape and try to get in there again.
I did remove all the screws and tried to lightly pull the plate upwards, but I did get some resistance, maybe it is some thermal tape that has binded to the plate. I will try again soon, and if I have time will take some pics.
Just to clear it up...
The copper heatsink that I can see under the aluminum plate is attached to the plate and will come off with it, or will the aluminum plate detach from the copper heatsink?
As for the clocking issue, 432/236.25 is the safest speed I have found so far, although I do get a few artifacts after an hour or so of Raven Shield on High graphics..which is a huge improvement from not being able to run any 3d apps. Inconel has layed out some memory timings and such for further tests, I will be running those as soon as I can and will post some updates. Perhaps I will start a new thread and see if some of you guys can run some tests with me, just to make sure that my 8790 is not defective therefore making these tests pointless.
I am at the point now, where I dont know if I want to get this thing fixed or just deal with it while I save money for a new lappy, rest assured I will finish testing though, if only to save some other 8790 owners the same frustrations I (we) have had to deal with. The goal is to find a safe, and performing video settings (Core/mem speeds, mem timings etc.) that users can apply out of the box in order to avoid this arttifacting problem all together.
Hello SLuG, first of all, thanks for the link. The copper heatsink is part of the aluminum plate. When I pulled mine off the only chip that had a thermal pad on it was the chip that I mentioned before that I could not identify, but now I strongly suspect was the motherboard's chipset (it makes sense). The other two were the ATI video and CPU chips. You should not have any problems prying the aluminum plate off.
As to the clocking issues regarding the ATI Mobile Radeon 9700 is concerned, I finally settled to setting my Core frequency to 150 and the Memory frequency to 125. Artifacts were really bad just moments prior to making this change (blocks all over the screen) and once I made this change, they immediately disappeared. I settled for using the Omega v2.6.75a driver and used its overclocking utility to make this clock change. I did not use ATITool.
Also, I've found Sach's Marine Aquarium 3D Screensaver to be a good benchmarking app in testing for artifacts. You can just let it do it's thing and go off and do something else. I believe it uses OpenGL for its 3D features, but I'm not really sure about that; however, I do think it is a great app to use for testing your overclocking/underclocking settings. I've let this screensaver run for about 4 hours straight using my last settings and no (0%) artifacts were displayed. When I had problems, artifacts usually showed up withing 10-15 minutes. Don't use Omega's artifact discovery tool as it does not work (at least it did not for me). Using a more 3D graphics intensive app, like this screensaver, is much better.
Why don't you try underclocking your Radeon 9700 like I did to see if you can achieve 0% artifacts? To me, it just does not make any sense to set your core and memory frequencies any higher because of heating issues. Unless you're a hardcore gamer, this may not be too practical for you. I just play 3D games occasionally, but I do use some other 3D rendering apps from time to time so I really do want the best quality and stability that can possibly be achieved along with being able to reliably play a 3D graphics-intensive game from time to time. The Mobile Radeon 9700 is definitely a bad video chip design, but I think your Sager NP8790 can be made to be more tolerable and/or more useful and you'll definitely be able to prolong the life of your video chip by underclocking it.