233 MMX or 200MMX on i430HX motherboard

[celtic]

I bought an i430HX motherboard second hand with a pentium 100 chip on it. I want to put a 233 MMX chip on it. The problem is: according to Intel, some of these motherboards will support the 233MMX while others only support the 200MMX, and I don't know which one I have. If I put the 233MMX on the board and it is the non-supportive one, what will happen? Will it just default to 200 MHz speed?

[DavidX]

You say it is an i430HX motherboard but i430HX is the name of an Intel chipset. Is the whole motherboard made by Intel or is it merely using an Intel chipset? The majority of motherboards fall into the latter category.

There must be some model no. either on a white label or silk-screened onto the PCB. Let us know what it is and we may be able to trace the manufacturer of the actual motherboard rather than just the chipset. That would possibly give a better idea as to what you can upgrade to and information on jumper settings, etc.

[This message has been edited by DavidX (edited 06-15-99).]

[celtic]

I took the case off and found this on a white label: P55-TH 970 24057

Screened on the board was a giant CE and the usual Made in Taiwan, rev. .03

I can't find any serial number sticker or anything like that. It has jumpers that go up to 200 MHz, but at Intel's website, their white paper said "some" of these would actually go up to 233 and autodetect and you just leave the jumper at the 200 MHz setting.

[celtic]

David, I want to thank you for your post! Spurred by your questions, I found a website where you can download a program that not only tells you what BIOS you have, but what motherboard manufacturer made it! It is www.ping.be/bios and I highly recommend it.
I now know that I have an Epox board with a bios that dates to 2/21/96.

[DavidX]

Ah yes! The good ol' BIOS string. I should have thought of that. Great to hear of your research, Celtic! I love finding out who made those anonymous components; it's the fun of the chase http://www.sysopt.com/forum/smile.gif

I'd say go to www.epox.com (http://www.epox.com) but I bet you've been there already http://www.sysopt.com/forum/wink.gif I checked and they have the manual, jumper settings, BIOS updates, etc for your motherboard.

[This message has been edited by DavidX (edited 06-15-99).]