On Monday 09 June 2003 19:43, Larry Sword wrote: > Larry Sword wrote: > > Praedor Tempus wrote: > >> I recently picked up an Athlon XP2700+ to replace my > >> Duron 1100. The switch went fine except my [EMAIL PROTECTED] mobo > >> apparently doesn't support anything greater than an > >> XP1500+. It is an MSI KT333 ultra and the manual says > >> it can do a 200MHz FSB, etc, which would support the > >> chip but...in any case, this is true, it seems, only > >> with windoze when using a special MSI-supplied > >> application for "overclocking". > > > > After changing cpu from the Duron, FSB=100, you will need to change > > the FSB for the Athlon XP2700+ to FSB=133, this will set the correct > > speed for the processor. > > Better make that FSB=166 for the XP2700+ while operating at 333. >
The via kt333 chipset is misleading- it's actually a kt266a that will run PC2700 ddr at 333Mhz, not that the FSB is 333Mhz. So setting the bios to 133 (266) is actually what it's rated at, and it's normal setting, except of course when using the Duron 200Mhz FSB cpu. However, you might be able to get a higher FSB with overclocking, and dropping the mulitplier a little. You can vary the cpu frequency either by the multplier, and/or the FSB, so it's a balancing act, and generally you get better performance for a given cpu frequency if the FSB is higher, and the multplier lower. In other words, you can achieve a given cpu frequency with various different combined settings of the FSB and multiplier. The MSI kt333 board does have it's limits, and will most assuredly be less than a true 333Mhz. It's a fine board, but for true 333Mhz FSB, you need the via kt400 or 400a chipset. Robert Crawford
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