Pentium MMX Overclocking - benchmarking up to 291MHz!

The Pentium MMX is a pretty strong overclocker, especially the 233MHz variant which interprets the 1.5x multiplier as 3.5x. With an Intel 430TX chipset, it's possible to get the thing running at 291MHz stable in the short run, particularly if you have a reliable motherboard like something from the Asus TX97 lineup.
How much more can you get out of this processor in your effort to hold out until you can afford a much faster system all around? You might be surprised to know...
I've even managed to stretch this CPU up to 315MHz on a Super Socket 7 motherboard, although there it starts to show signs of instability.
Created on February 5th, 2020
one of kugee's earlier videos originally produced as an exclusive for another platform. thats a crazy good sample he got there, he later pushed it to 300mhz and then 315mhz on ss7 but it was hitting its limits by then
on November 14, 2023, Kugee's website, Razorback, shut down, and hundreds of the best retro tech videos vanished with them. He sent me some nvme drives with raw footage and project files so I can preserve his videos in the best format possible. so this is effectively the official archive of Razorback (and kugee's youtube channel)

[@AndreiNeacsu]

If you are curious, as mentioned at the end of the video, you can compare your results to mine in Win98 and WinXP. The videos with the 430TX are public on my channel. You can also see the effect of going over 64MB or RAM that the 430TX chipset can cache.

[@Tetracera.]

when i was little i ran a 200mhz pentium mmx at 266mhz and i used that system for years at that speed, till i swapped it out for a 550mhz amd k6-2, which i ran at like 632mhz.

[@Namenloser_]

6:40 what the hell ist that

[@cszolee7979]

My MMX 166 was not stable at 290MHz so I had to limit it to 250MHz :)