AMD Athlon XP AXDA2600DKV3C stepping codes?

[mrwebber35]

I would like to upgrade to this using the Gigabyte GA-7DXR 1.0 board but things are not going too well. The board does function and according to your web site the AXDA2600DKV3C Thoroughbred runs at 1.65v but when I click on the stepping codes it mentions that stepping codes that end with an "A" are 1.65v and the ones that end with a "B" are 1.60v. AXDA2600DKV3C only has stepping codes that end in "B". However the "K" in the AXDA2600DKV3C means 1.65v . Can someone clear this up please

[Marcin]

AXDA2600DKV3C is 1.65V and all desktop Thoroughbreds FSB 266 MHz will work on your motherboard. You shouldn't worry about steppings.

[mrwebber35]

Does the CPU-ID play a role in the voltage settings? For the AXDA2600DKV3C it claims to have the CPU-ID (B) and has the numbers 6-8-1. On this web site it claims that the voltage is usually 1.6v. If the CPU-ID was (A) 6-8-0 then the voltage is 1.65v. I only ask this because the board I have had the voltage jumpers but my generic board never came with voltage jumpers (switches). The board has the voltage settings scribed on the board but the solder position where the switches are supposed to be are missing. The BIOS has settings for voltage but they don't go any lower than 1.625 v.

[mrwebber35]

One more thing, I tried this very chip on the board and it turned into a black burned out chip in 5 seconds without showing anything on the monitor. The voltage was set for 1.65 volts.

[Neon_WA]

[mrwebber35]

I may have not set the heat sink flush against the chip because the socket A plastic base seemed too high for the heatsink. The chip seems shallower than the 2GHz or the 600Mhz Duron. I'll try again with another used chip but I'll file down the heatsink or the socket. I turned off the PSU after 5 seconds but I guess it was too late. Just wanted to see if your reaction was total disbelief or what. Thanks for all the help. I'll post my results later. The chip is only $12 so I'll try again.

[mrwebber35]

Did you read the post before where I asked again about the 1.65 volts. My board won't go below 1.625 volts. CPU-ID (B)?

[Neon_WA]

[mrwebber35]

I finally put the chip in very carefully with a thin amount of thermol paste and by the grace of Lord Kelvin it worked! Now I think my heat sink is insufficient to keep the chip cool enough for longevity. The max. temp. for the chip is 85 degrees C but the BIOS monitor had it up to 76 degrees C before I shut it down. I'll look around to see what the standard no load temp. should be for this chip but if you could point me to web site I'd appreciate it.

[DamnBeavis.]

[Marcin]

Temperature under 60C is OK.

[Tetrium]

[mrwebber35]

I did have a better heat sink and fan from an old PII build that used a Celeron Socket 370 that overclocked it for over 10 years. I double checked to see if the heat sink sat flat against the new AMD 2.6Ghz chip by checking the paste impression left. I did have to modify the cast metal divider as it was too deep to fit the new socket. It dropped the temperature to a no load temp. of a constant 63 degrees. When under load it goes up to 70 degrees. I do have the latest BIOS F10.
The source of the heat problem is actually the GygaByte 7DXR 1.0 motherboard. You see the 1.0 version may have been sold as a corporate computer with the physical board voltage 6 position switch not installed (for less manufacturing expense). I have several copies of this board, all the same; the solder position is empty. You would think the Bios which has a voltage adjustment available would allow me to set the voltage to 1.65v as it let me do with the slower 600Mhz AMD Duron chip but no, it won't allow for slower than 1.675v. Never the less, the next boot up set the voltage to 1.7v. The best I can do is set the voltage to AUTO and the next boot shows 1.68 and sometimes 1.69v. That's my heat problem in a nut shell.

[Marcin]

Please check a ClockGen tool if support your motherboard and give you an option to undervoltage.