Found 1.4 Athlon hanging around:

[leigh6]

Hi all,

Got chip. Gotta build a system. NO OVERCLOCKING. So need to find out fsb to match up and buy a motherboard.

Thanks in advance, Leigh

 

[Kipper]

You could probably take the stepping/serial/model #'s on the die of the chip and cross-reference them on AMD's website.

 

[SneakyStuff]

I believe you can use PC2100 DDR on that particular processor. But best to double check on AMD's site.

 

[cremefilled]

The 1.4 came in 100/133 FSB vartiations. So, depending on your chip, you could use even a very old motherboard, even using PC100 memory. Any Athlon compatible motherboard at all should work. You might try to find a used ECS K7S5a, as those were quite popular and stable "back in the day," and they could use both SDRAM and DDR, anything from PC100/133/"1600"/"2100".

Btw, if you use a really old motherboard (like 3-4 years old) that can only do 100FSB, even if your Athlon is meant for 133FSB, it will still boot and run, only at 25% lower speed (1050 MHz).

Don't spend much money, though! That chip is pretty outdated. A Duron 1.8 (e.g.) will easily outclass it at $40.

Look on the for sale forum here. An old KX133a motherboard shouldn't be more than $20.

 

[3chordcharlie]

You won't have much luck finding a new or even recent mobo that won't support 133fsb. So don't worry about it.