Astennu
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- Joined
- Apr 7, 2005
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I wonder as well.
Problem is that software that programs the card's controller directly (during run-time) has to modify memory values in this controller. This controller is (more or less) well documented by ATI, so you just look up how to do what you want to do with the controller and code it.
Modifying the BIOS is a little different/more complicated. You have to figure out how and where the values you wanna change are saved inside the BIOS. There is no documentation around, so researching is the most time-eating part in developing RBE. It takes lots and lots of trial-and-error and without having one of those cards myself, it's almost impossible to find stuff out.
So I'm pretty willing to implement stuff and it's easy to do as long as I know what I'm doing there.
Maybe I'll get more time for researching in the future again, we'll see. However, thanks for your accolade!
I have the idea that its the same with the 5850 and the 5870. My 5850 with 5850 bios would only run 900-1125. I know the 5870 upps the core voltage. But my memory also saw a boost. After the 5870 bios i could do 950-1225. So there is a chance that the 5850 bios also uses the lower memory voltage like the 5970 at default.
This might make it more easy to find out. I understand your problem that without a 5850 you cant realy test it. I hope you get enough donations to buy one
BAGZZ: If you manage to find out where the memory voltage tables are (maybe see if ATi Tray Tools can as it lets me change the Memory I/O voltage on my 1950, but neither the GPU or Memory voltages take effect if I hit apply even though they both are there, only the Mem I/O lets me), you should make a "one stop shop" app for ATi video cards Pick up where Wizz left off with ATiTools, and have RBE let people do real time voltages for GPU/Memory + memory timings, overclocking, stress testing and sensor readouts, along with everything it currently offers. With modding a BIOS in general being a dangerous task, there really isn't much warning you'd have to add for the voltages and timings For me, even though I am still rocking my x1950, I have to use RaBiT, ATi Tray Tools and (while not a necessity) GPUTool to do all I want. RaBiT for real time GPU volting and mem timings, ATT for memory voltage and it's my primary app for overclocking and I prefer to use GPUTool for it's stress testing since it's FPS holds a constant where ATT jumps around 100+ fps and I don't know if what I changed actually had any impact :\
I know it's asking quite a bit, but might be a good goal to work towards ^_^
Its not that easy. With the X1800, X1900 and X1950 its different. From day one there where tools that could change: GPu, Mem and Mem I/O voltage. I dont know why but i think AMD wanted to do something special for the OC people. But this might be something that w1zzard knows. Because ATi Tool had support for those things.
So because your 1950 can it does not mean the others can aswell. They might because on the HD4 and HD5 there is a digital PWM for the memory. In that case you get the problem where BAGZZlash was talking about. Try to find out how the bios controlls it.