Hi every one,, I have not been in here b4 but am having some trouble with the temperature control of my new 4870x 2 gpu and not yet successfully fixed it.
I will try to keep this as short as possible but I think i have some info that an awful lot of people might benefit from.
OK , I bought my 4870x2 and had a few driver install problems at first as vista didn't seem to have a generic driver to get things started so as i installed the CCC b4 it had finished the screen went black after a short message from windows vista 64 saying display driver disabled due to incompatibility. So after leaving the PC on in this state to make sure the driver had finished installing I initiated a hard restart. The PC rebooted up and went through its normal boot process until it got to the windows icon where it went back into the boot process again but this time fired up ok accept that all the colors of my CPU meter had all gone to strange colors. After a reboot it had returned to normal.
But here was where the real trouble started..... After only a short time i found that the pc began to smell very hot and this was only at desk top, But being slightly silly i only checked that the gpu fan was spinning by eye and loaded up crysis to see what higher settings i might get over my older nvid9800 xfx Only to find that about 30 seconds in the screen began to artifact so i quickly exited the game and loaded up the CCC to find that the gpu was almost 90 Deg c and the fan was still only at 27%. so swapped it to manual whacked it up to 70% and watched the temps drop really quickly.
This made me go on a goggle search for an answer and to my horror I find hundreds of people complaining about the temps of their 4870s and 4870x2 cards. I have tried the profile method of sorting this problem out and am not happy with it as its too easy to go into a game and get involved in the fun to find several mins later you have forgotten to up the fan speed and have to close the game due to over heating. I know that ATI say these cards are designed to run hot but the increase in case temp with a card running at 80 to 90 deg is just stupid and to try to touch it will just burn your hand.
Now on to the problem its self..........
I have found that i can easily keep the card under 61 Deg c. at all times by running 29% fan speed at idol and 45% in crysis ( other people might need to use higher speeds as I'm using a tj109 silverstone case which has very good air flow).
NOW after doing some more digging around in goggle I find that you can extract a copy of your gpu bios with GPUZ then open it in RBE1.17 which I have done to find that ATI have set the bios for the fan controls so that the Tmin is set to 70 Deg c. Tmax is set to 114 Deg c. and the target temp is set to 95 Deg c. with a min duty to 27%.
This seems absolutely stupid to me when the card will artifact an 85 to 90 c. any way and the ambient heat from the card at this temp level will push your case temps up by at least 10 Deg C or more This sort of temperature for regular use must shorten its life as well.
The next problem I have is that manual control is unsatisfactory and other programs such as Riva tuner dint work properly and reliably. So the only option left is to re program the bios, but this will void the warranty and I dint think it fair of ATI to expect the end user to do their job for them to make the cards usable. And as they have just released a CCC that simply locks the fan control to manual and 50% fan speed unless you unlock the card I am sure they realize they have got serious problems with all the 4870 range.
Ok now that I have got the whole story of how I got here out of the way perhaps someone might be able to help me with what I am trying to figure out...........
I have decided to mod the bios and found some answers on how to do it but after extracting the bios from the card loading it into RBE and saving it with
Tmin 38 c.
Tmax 82 c.
min duty 28%
Target temp 55 c.
I find that I can find no posts any where that tell you how to tell which is the master bios and which is the slave bios. Or weather I have to flash the slave bios as well as the master. I now have my un altered bios loaded in to winflash. I would have posted links properly for you but the forum wont alow anyone who has less than 5 posts to post links but if you copy each of these into your searh bar removing the space after HTTp you should be able to view the pictures.
I took a gues and flashed the bios that has no S in its name but after the process had finnished the only difference was that the fan went up to 100% on boot up.. I also copied the bios again fron GPUZ just to see if the flash had actually taken and it seems to have but the fan auto controll still doesn't seem to work.
PLEASE can any one tell me how to do this properly and weather i need to flash both master and slave bios.