NexGen 133 without FPU

[CPUShack]

A new one I found, havent seen a 133 without a FPU before.

Anyone know of one?

[gg1978]

I didn't think any of the Nx586 parts had a built in FPU.. I thought it was always an external chip with them.

[CPUShack]

[mtx500]

That's a fantastic chip. I, too, thought that the faster NexGens were always with FPU included.

Do you by chance know where this CPU comes from? Tracing back the motherboard where this was taken from would be cool, because with CPUs >= 120 MHz there should be a newer BIOS version (p06y035f) that I'm desperately searching.

Regarding your statements: I think you are both right

It is true that the FPU always came as a separate chip. The FPU exist even as a separate package, although I don't know whether these were some kind of samples or actually sold. At least I never saw a motherboard for the Nx586 with separate FPU socket.

The NexGen CPUs with FPUs are all MCMs (Multi-Chip-Modules). They contain the Nx586 CPU chip plus the FPU chip, that's why the heat-spreader is so big. According to what I read on the Web it was IBM (the foundry for NexGen) which suggested to use MCMs instead of separate packages.

[mavroxur]

The first NexGen chips had an external FPU. It was relatively common.

[CPUShack]

It came in a scrap lot so no telling what motherboard it was on

[popo]

Did you get it from CN?

[CPUShack]

Nope, US Based seller, pretty much a normal scrap lot, accept for the NexGen that was hiding.

[iguana]

You are not alone.
I've got the same from local gold miner three years ego.

http://www.cpu-world.com/forum/viewtopic.php?t=2859&postdays=0&postorder=asc&start=258

[CPUShack]

2 weeks earlier production too, so it wasn't some special run. Probably just whatever they could get to bin that high

[Piktscher]

The changed BIOS is not the only thing you'll need to make it run. In fact the cache chips should be faster.

[dan87951]

I wonder if it works? That would make a cool DOS gaming machine. To bad the motherboard's are so few and far between..

[Marcin]

Those beauties are almost impossible to find and all Nexgen family CPUs becomes only in stories from grandpa. Still chasing 120 and 133 DJs. You lucky lucks