VOGONS


First post, by ratfink

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I've been going through a batch of what I thought were socket 7 cpus I obtained a few years ago in a swap. Apart from the usual Pentium 1 non-MMXs, MMXs and K6/2s there are:

Cyrix MII 300GP
Cyrix 6x86L-PR200+GP
IBM 6x86MX PR233
ST 6x86 P166+
MediaGXm-200GP

I'm supposing that the Cyrix, IBM and ST processors are all related to each other and will possibly all work in a Gigabyte GA5AX and/or FIC PA-2013 [the two kinds of socket 7 board I have].

But what about the MediaGXm - I thought I saw that it needs a special motherboard, but does it need such to work at all or is it just to let its full capabilities be used?

Reply 1 of 5, by Jo22

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As far as I know, the Media GX needs a special chipset and its pinout is different.

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Reply 2 of 5, by Roman78

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MediaGX processors can only run on motherboards specifically designed for the same model of the processor due to tight integration between the processor and its companion chipset.

Source: https://en.wikipedia.org/wiki/MediaGX

Reply 3 of 5, by ratfink

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Thanks, I also see on cpu-world:

Cyrix GXm processors were manufactured in 320-pin ceramic PGA package and 352-ball BGA package. Although the GXm microprocessors in ceramic PGA package fit into socket 7, they have completely different pinout and they do not work in that socket.

Reply 4 of 5, by Cyrix200+

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Hmmm 😀 lovely CPU!

ratfink wrote:

...

Cyrix 6x86L-PR200+GP

...

1982 to 2001

Reply 5 of 5, by feipoa

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The Cyrix MediaGX needs a MediaGX motherboard. I use the ECS P5GX-M, which has onboard USB, 2xISA, 2xPCI, PS/2 mouse/keyboard. You can run the CPU from 150-300 MHz. The GXm is about the slowest per clock of any "socket 7" era CPU. Here's another thread on this motherboard/CPU, Anyone have interest in buying a NOS 200MHz system?

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