> LSI has them running at 1.8 GHz (200MHz faster than IBM's original announcement).

Yes, I mentioned this to you briefly some years back:

https://morph.zone/modules/newbb_plus/viewtopic.php?forum=3&topic_id=7001&start=292

> Not sure how they did that when IBM's L2 cache operates at 800MHz and
> has a maximum 2:1 CPU clock ratio.

I'd guess they simply run the cache at 900 MHz then :-)

> A four core system with the L2 cache cores and the MPIC interupt controller,
> and addition I/O (PCIe, networking, USB, etc) would make a nice system

Sounds exactly like a system using the Axxia ACP344x chip :-) Unfortunately, the chip lacks SATA.

https://morph.zone/modules/newbb_plus/viewtopic.php?forum=3&topic_id=7001&start=482

> Correction = LSI lists processors "running at up to 2GHz".

That's what they say about the PPC476FP core. However, they only offer it in chips up to 1.8 GHz.

> Any idea why IBM does not offer this in a sandard product?

IBM waved goodbye to its PPC4xx chip business when they sold it to Applied Micro in 2004 in order to focus on the PPC4xx core business (no pun intended).