Thursday, September 07, 2006

Anyone ready for 533MHz?

Is anyone building adapter cards for the full 533MHz data rate of the PCI-X 2.0 spec?

That’s the question I have in the wake of today’s news that Hewlett-Packard is revving up its Itanium systems for PCI Express and PCI-X 2.0—but it will only support up to 266MHz cards on the PCI-X side. For the full story go to If the article is not on the home page, search for story ID 192503766.

I know the computer industry is in the midst of a transition from PCI-X to 2.5Gbit/second Express. But I also know—thanks dear comment writers to my item below—that PCI-X will be built into new servers for the next couple years and into embedded systems for the next decade or more.

So will we see those fast 533MHz cards? If so, when? For what functions? I am all ears. --rbm


FishyMcDonk said...

I think 266 support by HP was a mistake (that even they will admit to) made three years ago when both HP and IBM hitched their I/O wagon to PCI-X 2.0 and underestimated Intel's comittment to PCI Express. That's why they are spinning their ASICs to have PCIe. 533 ain't never going to happen and I'll bet those 266 slots will mostly run at 133. The HBAs that need the bandwidth will all be PCIe.

Anonymous said...

Those 266 slots are running 4 Gbps Fibre Channel and 10 Gbps Ethernet operating at 266 not 133.

One thing missing from the whole PCI-X vs. PCIe debate was an understanding of the customer problems and needs. Those that continue to ship PCI-X know what customers want and are transitioning to PCIe as the ecosystem for servers starts to appear in earnest. Seems like these companies timed their offerings just fine and didn't drink the kool aid.