MicroMac ThunderCache Pro find

[KennyPowers]

Do you have pictures of your two FPUs?

Here's mine

 

[mg.man]

At least MicroMac gave you a 40Mhz CPU...look what they gave me!

Ouch!

Still...maybe I should try to find a better CPU...

You mentioned you've replaced the oscillator - maybe try a 40Mhz one? Might be cheaper than finding a faster CPU - and would be useful to know if that makes any difference?

 

[zigzagjoe]

I just pulled it out to take a picture of the FPU for @zigzagjoe and decided to peel back the CPU sticker too. At least MicroMac gave you a 40Mhz CPU...look what they gave me!

View attachment 70053

I wonder if that has anything to do with my stability problems? Still, it runs fine until I do something obviously FPU related (math benchmark, etc). I've had zero crashes in games and other apps I've tried. Still...maybe I should try to find a better CPU...

I would say that CPU is 50/50 if it would operate at 50mhz or not. Certain masks like F91C are a shoe-in, they will do 50 regardless of rating. That is a 1.0um shrink - it's certainly better than earlier ones, but I'm not sure if motorola officially certified them for 50.

This is a good source for CPUs: https://www.ebay.com/itm/383977080850
Eric sells legit chips, not remarked and I've had no issues with the 7 or 8 I've gotten from him so far.

Your FPU should have no issues at 50mhz - it's a good mask and rated for it.

 

[KennyPowers]

I would say that CPU is 50/50 if it would operate at 50mhz or not. Certain masks like F91C are a shoe-in, they will do 50 regardless of rating. That is a 1.0um shrink - it's certainly better than earlier ones, but I'm not sure if motorola officially certified them for 50.

This is a good source for CPUs: https://www.ebay.com/itm/383977080850
Eric sells legit chips, not remarked and I've had no issues with the 7 or 8 I've gotten from him so far.

Your FPU should have no issues at 50mhz - it's a good mask and rated for it.

Thanks! I ordered one from him...we'll see how it goes.

 

[KennyPowers]

Thanks! I ordered one from him...we'll see how it goes.

I got the 50Mhz 030 today and installed it onto the ThunderCachePro...the stability problems are gone. Thanks MicroMac