Compaq has stuck the knife into Intel's Itanium processor, claiming that it has failed to pass the company's stress tests.
A Compaq spokesperson said that "sightings" with the 64bit processor had turned up when the company was testing its Proliant DL590/64.
A "sighting" is industry-speak for equipment that fails to perform as expected in testing but does not have any apparent defects.
While denying that the "sighting" was a flaw, Compaq said the problem in the processor was enough to put the brakes on the release of its own Itanium servers.
The problem, whatever it really is, crops up with the 733MHz and 800MHz version of the chip.
Intel has confirmed the "sighting", but denied the problem lay with the chip.
Other manufacturers have continued to ship the chip, and Intel is working with Compaq to find out why it failed the tests.
It is the latest of a long line of stumbling blocks for the troubled Itanium chip, which was one of the most ambitious product launches in Intel's history.
Co-developed by Intel and Hewlett-Packard, Itanium was a totally new design and was intended to take on machines from Sun. But the new architecture took years to complete and debug.
Originally due out in the mid 1990s, the chip actually hit the streets in May this year and few suppliers have bothered marketing it.
Those suppliers that are interested seem to be more keen on the next version of the chip, McKinley, which comes out next year.
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