KT133A vs KT133

[tRaptor]

whats teh diff?

and does anyone know more about there FIC, 1st mainboard motherboards?

[Wuzup101]

Both the kt133A and the kt133 are VIA apollo chipsets. The kt133A is the newer of the two and supports socket7 266mhz fsb. The kt133 supports 200mhz fsb.

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AMD Tbird (AXIA) 1Ghz @ 1Ghz w/ OCZ gladiator
Asus A7V
384megs crucial cas2
Leadtek 32meg Geforce2 GTS Pro (225/420)
Soundblaster Live Value
Western Digital 20gig 7200rpm (UDMA 100)
Nec 40x cdrom
Sony 12x8x32 CD-RW
17" KDS Avitron flat screan (1024x768 @ 85hz)

[Todd a]

This also has a big effect on overclocking. Some of the newer cores are hitting 1.5Ghz or more. With the all KT133 you are limited to a 12.5x multiplier and a 110-115Mhz bus speed (and that is on the better boards like Abit or ASUS). That tops out at 1375-1437Mhz. 1.4Ghz will fall short of some of the 1.6Ghz ranges that some are starting to hit. Also the lower bus speed does impact performance a bit.

As for features they are both very similar. They both use SDRAM. They only thing I am not sure about is weither the KT133 was generally combined with ATA 66 or 100 hard drive controlers. Some of the later revision KT133 boards are hitting 160Mhz or more. VIA is also releasing a new revision of their KT266 (their DDR board) that is supposed to perform better. Hopefully it will overclock higher too.

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The COMPUTER is your FRIEND!
Happiness is manditory.

[wrathchild_67]

With the newer KT133a chipset came the infamous VIA 686B southbridge chip (added ATA100 capability). Some of the very last KT133 boards also had this chip.

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[greatmatt]

One correction to make. Wuzup101 stated that they support socket7. They are actually made for SocketA processors. Other than that, everyone is on the money.

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WHASSSSUUUUP???

[JollyRoger]

The 686B can be a dodgy southbridge at times, esp on cheaper/poor quality mobos (ie, the QDI Kinitz 7B, the only good thing about that mobo is it finaly convinced my work to use ABit instead!)

Other than that the KT133A is the best of the 2.

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AHHH, I think my computer's got a Virus!

Oh no, that's Windows 98

[Wuzup101]

Thanks for picking up on that error Greatmatt...I don't know what I was thinking. Also you guys are right some of the last kt133's had the ata100 support, as my asus A7v does. Not like it really matters since our drives can't keep up anyway.

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AMD Tbird (AXIA) 1Ghz @ 1Ghz w/ OCZ gladiator
Asus A7V
384megs crucial cas2
Leadtek 32meg Geforce2 GTS Pro (225/420)
Soundblaster Live Value
Western Digital 20gig 7200rpm (UDMA 100)
Nec 40x cdrom
Sony 12x8x32 CD-RW
17" KDS Avitron flat screan (1024x768 @ 85hz)