CAN I USE T-BIRD 266 ON KT-7 MOTHERBIRD?

[Spectre SE]

I have an original KT-7 motherboard on which I have been running a 850 Mhz 200 FSB T-bird.

Without investing alot of money, I wanted to put a faster chip on the board, but notice the supply of 200 FSB chips is rather dry.

I know the BIOS updates on the original KT-7 board do not support the 266 FSB chips, but I thought I had read earlier in the year some talk that they could be installed without full performance gains as a possible upgrade.

Anyone know about this??? I can't find the old posts.

Thanks....

 

[Evadman]

that is true. You can install a 266 chip in a 200 board ( 133 vs. 100 ) but you will loose 33% of the speed. For instance, you can install a 266 AXIA 1.0 ghz chip, but it will only run at 750mhz.

a better idea would be to use a duron with a higher speed, as they are all 100 bus. Assuming your board will work with morgan cores.

 

[DieHardware]

You can install a 266 chip in a 200 board ( 133 vs. 100 ) but you will loose 33% of the speed

If the CPU is unlocked, simply change the multiplier to run at 100FSB(i.e. you would change a 1GHz 266 Athlon C from 7.5 X 133 to 10 X 100).

 

[DAPUNISHER]

Yeah, I posted about doing it with a 1.4ghz T-Bird and a KT-7 because many were parroting the statement in the bios release that indicated the 266 CPUs were for use with the KT7-A only. I was able to run it@112x12.5=1400mhz stable however despite picking those settings the bios read it as 110fsb and Sandra read it as 108fsb so I did a search and discovered that the KT7 series did have a tendency to misread the fsb and Sandra was less acurate then than now as well. BTW you should do a search in the FS/FT forum every week as 200fsb T-Birds do show up for sale at very low prices occasionally, or go with a Morgan as suggested since flashing to the latest bios should add support for it (not certain of this as I haven't checked) and the Morgan does have SSE, improved power management and thus less heat, and hardware data prefetch that should make it the best performer for a KT133 board.

 

[Spectre SE]

Is there any significant performance difference from a Morgan chip and the Athlon T-bird? Would I be better in this scenario going with one over the other?

 

[DAPUNISHER]

The T-Bird has a bigger cache but the Morgan has the enhanced feature set I mentioned before so it would depend on the software in use as to which would perform better, for instance SSE optimized apps should favor the Morgan. Personally I would go with the Morgan if you are able to get a definitive yes as the answer to the ability to use it with your board.