Ozzuneoj wrote on Yesterday, 03:43:

Straightened a bunch of pins on some "scrap" K6 processors I picked up recently and got to test a few out. Started with a couple […]
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Straightened a bunch of pins on some "scrap" K6 processors I picked up recently and got to test a few out. Started with a couple of K6-2 500AFX, which are working great. Then I moved to a K6-2+ 550ACZ (2.0v) and a K6-III+ 500ANZ (1.8v), both of which seem to work fine at 600Mhz at 2.0v. It's so easy to overclock those chips to 600Mhz, and they run so ridiculously cool... Seriously. I have some cheap little heatsink+fan combos that I have rewired to run at 5v rather than 12v so they are very quiet. Even with this, I ran some programs on the K6-III+ at 600Mhz 2.0v, immediately shut the system down, pulled off the heatsink and the CPU heatspreader was cold to the touch, as was the underside between the pins.

Makes me want to overclock it to the moon... though I know they tend to hit their limit well before 650Mhz. I also tried running the K6 III+ at stock 1.8v at 550Mhz and it was stable while playing a game and doing some stuff in Windows 98. That seems really good. 😀

Also, the Soyo SY-5EMA+ v1.1 I have seems to top out at 6x100Mhz so I will need to try them in a different board to push them any further than that. Not that it is really necessary of course...

I think one of these would make an excellent mid level test system for parts since I will from time to time run into cards that need a slower system or just don't like running in a PII/PIII. Being able to flick a couple switches to go from 600Mhz to 200Mhz (100x2) or 166Mhz (83.3 x 2) is handy. Come to think of it, I wonder if the K6-III+ has the same issues running the NV1 that the PII\PIII have? The card actually runs games slower on Intel chips newer than a Pentium MMX I believe.

Now that you mentioned the 5EMA topping at that speed... I need to check my newly bought Tekram P5M3-A+ to see how high it goes. It claims 133FSB, and uses 686A southbridge surprisingly.

Tested 7 sticks of DDR1 1GB:

- 5 x Corsair: 4 100% Ok, one has issues: one chip has oxidized leads and looks like it took a blow.
- 1 x Adata: 100% Ok
- 1 x Wise: 100% OK

If I mix Corsair, Wise and Adata I get random errors... Old compatibility issues 🤣