VOGONS


First post, by asdf53

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I have a Gigabyte GA-586S (Socket 7) that supports the AMD K6, but not the K6-2. I recently stumbled upon this article: https://www.philscomputerlab.com/k6-2-2-3-resources.html
There's a software called "K6 Pro" that apparently enables K6-2 features on unsupported boards:

if your motherboard BIOS does not explicitly support the K6 processor, K6-Pro will provide some performance enhancements. (...) […]
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if your motherboard BIOS does not explicitly support the K6 processor,
K6-Pro will provide some performance enhancements. (...) For testing the before and after, we used an AMD K6-III(tm)/400 and
an AMD K6-2(tm)/400 (...) The motherboard used is circa-1997 and the system BIOS does
not support the K6-2 and better processors.

This sounds as if older boards could still run a K6-2, only with a slight performance hit due to unsupported processor features. Has anyone ever tried this?

Reply 2 of 6, by asdf53

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flupke11 wrote on 2022-04-27, 07:23:

I run a K6-3 on an Asus TX97-XE. All you need before the software tweaks are a compatible voltage supply and perhaps a BIOS update.

Interesting. What CPU does it detect in the POST screen? Did you use the K6-Pro tool or something else? The K6-2 needs 2.2V, my board goes only down to 2.5V but I think this should be okay.

Edit: But the CPU needs 3.3V I/O voltage, my board only supports 3.52V, could this be a problem?

Reply 3 of 6, by flupke11

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It correctly detects the K6-3, I did not use the software tool yet, it was more of a proof-of-concept.

Although your board accepts split voltage CPU's, I'm not sure about it supporting k6-2, as it's a fairly old chipset. I haven't looked into it any further, though.

Reply 5 of 6, by asdf53

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That's good to know, I have never overvolted the I/O, thought it might be sensitive. Anyway, if anyone else has tried this, please share your experiences. There is surprisingly little info about this subject. If there are no objections, I will definitely try this in the following weeks.

Reply 6 of 6, by cyclone3d

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Upping the I/O voltage can help when overclocking the chipset / fsb.

I would make sure you have better than normal cooling for the CPU when running it at a higher voltage.

The K6-2 chips can get very very hot when overvolted. Back in the day, when I was running my K6-2 550 at 660Mhz, the heatsink got blazing hot even with a high power fan pointed at the heatsink in addition to the fan on the heatsink.

Newer / infinitely better PSUs and also newer coolers (thin fin and heatpipe) help a lot in that regard.

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