abit unlocked my xp2400

ok this is wierd. I have an 0346 xp2400/266. which is a locked chip. I've tried it in different Mb's and yes it is locked ( no multiplier control in bois) I picked up a new MB ABit nf7-s ver2.
I put the chip in and boot it up and i now have control of the multiplier in the bios. I've changed the multiplier to see if it would change my mhz and it does. I've checked it in wcpuid ! I've tried several multiplers in the bios and everyone worked. Many people said this is not possible, well what can i say it works. I've looked for some reason for this and this is what i found at the abit web site

ABIT MaxFID (Max Frequency ID) Technology is a special designed for ABIT K7 series MB. With unique ABIT RD engineering, MaxFID Technology can support extra 16 sets parameters to determine the AMD CPU multiplier. Unlike other manufactories, users can not only OC by FSB, but also adjust CPU’s multipliers through ABIT MaxFID to get a best performance platform. However, this wonderful feature only works when users adopt AMD AthlonXP CPU with ABIT K7 motherboard.

What is 4-bit FID?

CPU’s Frequency equals FSB times Multipliers, we can choice 100MHz or 133 MHz by CPU’s FSB to boot up your PC, and you could get an operation frequency by CPU’s FSB times its default multiplier. So when you get a CPU is AMD K7 1.2G (133MHz x 9 = 1198MHz), that means the CPU default multiplier is 9 by 4-bit FID: [1100]. FID just is a binary number to define the Multiplier by 4-bit as table below:

4-bit FID Multiplier 4-bit FID Multiplier 4-bit FID Multiplier 4-bit FID Multiplier
0000 11 0100 5 1000 7 1100 9
0001 11.5 0101 5.5 1001 7.5 1101 9.5
0010 12 0110 6 1010 8 1110 10
0011 12.5 0111 6.5 1011 8.5 1111 10.5

But in 4-bit FID only MB, we can not find a FID setting over 12.5, if user gets a CPU has a multiplier higher than 12.5, the CPU will run at default multiplier and only can OC by FSB.

How does Max FID operate?

For ABIT K7 series M/B, we provide 5th bit FID to determine extra 16 sets CPU multipliers, as follow table:

MaxFID Multiplier MaxFID Multiplier
10000 3 11000 15
10001 19 11001 22
10010 4 11010 16
10011 20 11011 16.5
10100 16 11100 17
10101 13.5 11101 18
10110 14 11110 NA

So when you get a AMD CPU which has a multiplier higher than 12.5, you could adjust not only FSB from 100MHz up to 250MHz, but also CPU’s multiplier by ABIT MaxFID.

What benefit can user get from Max FID Override?

By ABIT MaxFID Override technology, users can get variety of CPU over-clocking sets. For example, if users get a AMD Athlon XP 2400+ CPU by 133MHz (FSB) x 15(Multiplier) = 2000MHz (CPU/DDR=133/166), That means users only can adjust the FSB to get an OC performance without MaxFID override technology. Such as: 150MHz (FSB) x 15(Multiplier) = 2250MHz (CPU/DDR=150/150), by CPU’s frequency limited. Otherwise users can adjust the frequency through MaxFID override by 166MHz (FSB) x 12(Multiplier) = 2000MHz (CPU/DDR=166/166) or 100MHz (FSB) x 20(Multiplier) = 2000MHz (CPU/DDR=100/100) to gain a best performance platform.

so what can i say it worked on my chip
Montee

that seems like a load of cobblers to me, tbh

4bit fid boards will allow adjustment of the multiplier, but if the default multi is 12.5 or lower, you can only adjust between the lowest setting and 12.5

if the default multiplier is 13 or higher, you can only adjust between 13 and 22 tops

5 bit fid boards such as yours will allow adjustment of the multiplier across the board, from 5 to 22, there is no neeed to mod your cpu to make the default multiplier higher or lower than 13 to adjust between different ranges............but by rights this only applies to UNLOCKED cpu's

i fell into this trap when i bought my kd7 a while ago, THE 5 BIT FID DOES NOT WORK WITH LOCKED CPU'S, i would check the bridges on your cpu in case it is actually unlocked for some reason, cos all the boards ive worked with havent done it

The most BS they can EVER claim (and the NF7 doesn't ahev it) is a BIOS mobile multiplier setter. That is a semi unlocker, they can also have a hot FSB change, so first the multiplier is decresed, then the FSB is upped, without a reset but we dont notice it cause its done in the POST. That would be cool, but also it would be immoral in the spirite of AMD's lockign in the first place (no BIOS OCing where typical users cant check).

None mobo unlocks a CPU.
If with your CPU you've control of the multiplier in the NF7, you have control in any mobo that permits change the multipliers...., that CPU is unlocked.

well what can i say i guess there are more unlocked chips out there them what everyone has posted.
I have a 0346 and it is unlocked
and i picked up a 0349 today and it is unlocked also