I was little bored this night and desided to overclock an old Pentium II 233 that I got from Overklokk earlier (the CPU was lying around in his Volvo ). Tried first with water and later with a custom build phase change cooler. Actually got it to post at 466 MHz which is a 100% overclock.
Maximum VCORE on the motherboard is 3,5 V, maximum specs for the Klamath core is 4,2 V.
Here's some pics of the project:
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