AMD CPU for an Iwill KK266

[forthill]

I have an Iwill KK266 (one of the early ones I believe) and have an AMD Duron 750 in it.
I want to get a faster CPU and, if possible, one that I can successfully overclock.
Does any one have any experience with [overclocking] a cpu for this board (i.e. an Athlon, Tbird, etc)
The board also has PC100 CAS 3 DRAM.

*Note: there still is an Anandtech article about these boards/chipsets and a link to overclocking AMD Athlons/Durons. There also used to be a whole message thread (last year sometime) based off of this article/link but I cannot seem to find it (maybe it was archived off).

Thanks,
WC

 

[gaidin123]

If you have a KK266 board then you can put up to the fastest Athlon XP currently available in it as far as I know. It can take the Athlon XP chips unless some very early revision of the board can't. The thing is that you will be strongly held back by your PC100 RAM.

The fastest that you can get that motherboard would be to put some PC150 CAS2 SDRAM in there, buy a higher end Athlon XP, and overclock the 133Mhz FSB as high as you can.

If you're interested in saving costs as much as possible, buy yourself a 1.4Ghz Athlon Thunderbird that runs on a 100Mhz FSB. That was the fastest CPU AMD made for 100Mhz FSB.

I'd highly recommend either getting a new motherboard, CPU, DDR SDRAM combo OR buying new quality PC150 SDRAM and an Athlon XP (the 1800 or 1900 and overclocking it).

As for overclocking, with Athlons you have the option of increasing the clock multiplier or increasing the FSB, or both. The easiest is increasing the FSB however you need quality, high speed RAM for that, and PC100 CAS3 is not. If you search around anywhere for unlocking a Tbird or Athlon XP you will find the instructions for "unlocking" the clock multiplier on AMD CPUs. This will let you raise or lower the ratio of processor speed to front side bus speed (ie your Duron 750 is 7.5x100Mhz). Both ways have their advantages and disadvantages but the best performance will come from using a combination of those two methods.

Good luck! Let us know what you choose.

Gaidin

Edit: After looking at prices, don't even think about getting a Tbird 1.4 with 100Mhz FSB. It costs the same as an Athlon XP 2000.

 

[gtd2000]

Why don't you try overclocking your D750 with the 133FSB to see if your RAM can handle the faster FSB?

Unlock it with a mechanical pencil - then you can decrease the multiplier to say 5.5 make sure that it will boot at 550Mhz/100FSB first to check that it is infact unlocked
Then change to 133 at 5.5 multiplier

If it will run at 133FSB then you could pick up an XP1600+ from Newegg for somewhere around $56 shipped