is it ok to put mmx chip on non-mmx mobo?

[mystere79]

I put 200mmx on old socket 7 mobo
does support 200mhz but i can't seem to find anything about mmx and it will not show 200mhz mmx during boot up,.

 

[Dexion]

What has happened is that the BIOS detects it running as a Pentium 200 non-mmx. And since your using an older non-mmx board, your MMX extension has been disabled(correct me if I'm wrong). Basically, its performing identically as a Pentium 200 Classic right now.

 

[Dexion]

What you can do is search if theres any BIOS updates for your motherboard(if any available), that would support MMX CPUs.

 

[AndyHui]

MMX instructions will be executed regardless of whether or not the motherboard supports MMX processors. The instructions themselves are not a function of the motherboard.

If anything, voltage should be the issue, as Pentium MMXs use a split plane voltage (2 voltages 3.3 and 2.8) rather than the single 3.3 volts of the Pentium Classic.

See if you can find a BIOS update for your motherboard, and see if there is a jumper or setting in the BIOS for MMX (aka P55C) Pentiums. Also make sure that the voltage is set correctly, or you risk damaging your CPU.

 

[R0b0tN1k]

The two voltages are Vcore and Vio. If the board can't set them independently, it can't use an MMX chip.

 

[dkozloski]

There used to be a plug-in dingfod that went between the socket and the chip that would supply the correct voltages for this situation.