Is there a way to adjust cpu voltage after the bio

[Guest]

I am running a K6III 450+ 2.0 volt on QDI P5I430TX Titanium IB+ mobo (flashed to thier latest V1.5SL bios, real old though). I set the multiplier to 2x, and the voltage will only go to 2.8volt. QDI uses a "Easy Bios" (jumperless), with no way to adjust things outside the BIOS. Anyway I forget what it is detected as something like "-66mxx cpu" in the bios, but at 75mhz front side bus (fsb) it runs at 450mhz and at 85mhz fsb it runs at 500mhz. It is detected as K6III 450+ in WinTune and other diagnostic programs. It runs fine! The voltage is just out whack.

I wish there is a way to adjust the cpu core voltage outside of the BIOS, haven't found one yet, as the manual says - "Switching regulator (2.0~3.5V circuit) on board." Their tech support said:
"Dear Sir/Madam,
No, you'd better not insert such a cpu onto this board.
Regards!" No help there.

It doesn't get hot at all even at 500mhz. So I am thinking that running it at 500mhz 2.8v will just cut the life of the cpu in half, maybe 5 years instead of 10, but in 5 years who cares? But as a Windows 2000 machine it works fine, even with two Voodoo2s SLIed together( using the new driver). And its alot faster than it was running a k5 200mhz overclocked to 266mhz. I can post the test results if anyone would like (and I have proof that the old Level2 cache is recognized as Level3 cache, even though it is not detected).

Does anyone know of a way to adjust the cpu core voltage in software, after the BIOS? Kind of like SoftFSB, but for voltage? What affect will there be running a 2.0volt cpu at 2.8 volt?

<P ID="edit"><FONT SIZE=-1><EM>Edited by jgs9455 on 11/16/00 06:38 PM.</EM></FONT></P>

 

[Guest]

2.8V!!! Wow.... and I was concerned about 2.1V. I'm certainly not worried any more. I'm amazed that it works, but I admit I don't know anything about these things. I assume that at above some voltage level the chip will fry, but I guess that level must be higher than 2.8V.

 

[Guest]

Oh ya, runs fine, I put my hand on the heatsink after running it for a day, not even hot!! I am running Sisoft Sandra on it tonight. I have loaded Delta Force Land Warrior on it, watched mpegs, etc. The thing that gets me is that it is even running Windows 2k, which would not run before when I had the AMD K5-200 running @266mhz, when Win 98 ran fine. Go figure. Of course Win98 wouldn't install when it was running at 266, I had to drop it to 233mhz, install, and crank it back up. And btw I am using a regular heatsink and fan.

 

[Guest]

Someone sent me the following:
The motherboard is equiped with a 2.0v-3.5V regulator and the QDI website states that with the lastest bios update the board can support K6-2 cpus that use 2.2V. In the Bios the speedeasy says it is 2.8 min must be wrong since the board can support K6-2. I believe that the K6-3 is actually using 2.0v on your motherboard and displays 2.8 in the bios. Use an diagostic utility or monitoring utility to dectect the true voltage since the TI IB does support monitoring. Anyways I just wanna confirm or have a good idea that the K6-3 cpu does work with an TI IB , so I can get one. Thanks alot for the info.