lazibayer wrote:Motherboard: MSI Premio TX5
It has two versions, one with ICS9148-04 PLL-IC […]
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Motherboard: MSI Premio TX5
It has two versions, one with ICS9148-04 PLL-IC
Screen Shot 2017-06-23 at 10.07.47 AM.png
The other with IMI SC653AYB
Screen Shot 2017-06-23 at 10.13.59 AM.png
cyclone3d reported in this thread that the ON-OFF-ON combination on the IMI version gives 100MHz bus speed! 😳 😳 😳
So I finally had a chance to test out this board some more. I never did really do anything even when the 166MMX was in there except test the POST with some different video cards.
The events are not necessarily in the order listed below, but it makes more sense to stick with what I tried with the different CPUs.
I first put in a Pentium 233MMX that I recently received and I was able to get it to POST at a reported 250Mhz at the supposed 100Mhz fsb setting. I was also able to get it to POST at 300Mhz by raising the voltage to 2.9.
I tried all the way up to 3.1v and the only difference it made was that it reported 266Mhz when at 3.0v and 240Mhz when at 3.1v. Something is definitely screwy with that fsb setting.
However, it freaks out when it gets to the second screen where it should be listing the CPU speed, RAM, IRQs, etc. Just locks up. I think either the board is trying to run the PCI bus at 50Mhz at that setting or something else is going on like it needs more I/O voltage of which there is no adjustment for.
I also tried with a K6-III+ 450 and although it POSTED, even at the 4.5 multiplier at the supposed 100Mhz fsb setting it had the same issues as the 233MMX did. I tried all the way down to the 2.5 multipler and it still did the same thing. THE CPU speeds reported were way off. Guessing that is because it only officially supports the original K6 CPUs.
So I guess I am just going to make it into a 233MMX system and be done with it. I could run at the 75 or 83Mhz fsb setting, but I really don't need to as I have other builds in the works that will cover faster speeds.