Hi!
The EDO were made for 66Mhz. I've owned EDO that ran fine at 83Mhz too. That was a SIM verisons.
The SDRAM DIMM is way longer than EDO SIMM and it was manufactured for 66, 100, 133, 150, ... Mhz. But I saw DIMM EDO's too.
Ususaly boards support mixing EDO with SDRAM (the EDO must be in pairs if it is SIM).
Stick with SDRAM now. It's cheaper and easier to find than EDO DIMMs.
I searched for your board in google [
here] and from what I understand you can put any SDRAM in that board. You can even put SDRAM 133 in it, but it will not be used at maximum. Thats it.
Have a second opinion on this, before you buy memory.
Cheers,