First post, by squareguy
I am currently working on finding a CPU for my next build that will be my primary retro system. Right now I am working with a Pentium II 400 that is unlocked, has the good cache controller and 5ns cache chips. I have other CPU's I need to look at but have not gotten around to opening them up yet.
My motherboard is an AOpen AX6BC (2.59 latest BIOS) that does not support changing voltage or going down to a 66-MHz bus with a 100-MHz bus CPU. Neither of these is an issue as I am going to mod the bus to 66-MHz and voltage to 2.1V on the CPU itself. Then I can select 66-MHz or 100-MHz in BIOS when setting speed. I have successfully made both of these mods to another CPU, so no worries there.
I have a hot air SMD rework setup and I am going to remove the 2 5ns cache chips and replace with 4.4ns or faster cache chips from a donor P2/P3 CPU. I will do this with an undesirable CPU first for testing.
Has anyone else done this, any tips or tricks you would like to share?
My goal is to have a Pentium II that can go from 133-MHz up to 450-500-MHz for this build.
Gateway 2000 Case and 200-Watt PSU
Intel SE440BX-2 Motherboard
Intel Pentium III 450 CPU
Micron 384MB SDRAM (3x128)
Compaq Voodoo3 3500 TV Graphics Card
Turtle Beach Santa Cruz Sound Card
Western Digital 7200-RPM, 8MB-Cache, 160GB Hard Drive
Windows 98 SE