ABIT KT7 vs KT7A with classic T-Bird. 133FSB HELP!

Hey all!
Been awhile! Hope everything is going smurfy around here.

I've got a question here.
I've tried clocking the FSB of my Thunderbird to 133MHz on a KT7 Board (VIA KT133 chipset). Now, I can't post beyong 112 and the system isn't stable unless it's around 105. As I understand it, the real dilemma with the overclocking isn't the CPU at all but the way the KT133 was designed.
Is this true?

My question is: If I were to purchase an ABIT KT7A (VIA KT133A chipset)that natively supports 133MHz FSB, would I have no troubles overclocking the FSB of my current CPU (standard T-Bird rated at 100 FSB all DDR of course) to 133MHz? (My RAM is Crucial PC133 Cas2. 256 MB unbuffered.)

Thanks all!


The Jolly Wizened Oaf!
3 answers Last reply
More about abit kt7a classic bird 133fsb help
  1. The limitation of the KT133 chipset is the speeds the FSB is capable of. Most boards with this chipset will run a 105mhz OK, some higher. The KT133A chipset solves these problems and will allow you to overclock with the 133mhz FSB on your current CPU. You will still be limited by the max speed of the CPU regardless of the FSB setting. My TBird 900 reaches 1050mhz with 105x10, and 1066mhz with 133x7.5 settings. I had problems getting the CPU to run at 1066mhz, so I back it down to 1Ghz even on the 133mhz FSB and all was OK. I have since bought a 1.2Ghz and have the same results. I run it at 133x10 = 1333mhz. It will run as high as 1.4Ghz, but runs into stability problems. So get the KT133A chipset and have fun.
  2. Neato!
    SWEET!

    Thanks a bunch guys!

    The Jolly Wizened Oaf!
  3. Mere technicalities. :)
    By Classic T-Bird I refer to the ones that are not C-revision, that is ones that operate at a 100MHz FSB. But I guess you're right, I should come up with a better reference name.


    The Jolly Wizened Oaf!
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