SAN JOSE --During this week's Intel Developers Forum here, Intel Corp. will apparently have little to say about two areas of intense interest to the computer industry: the launch dates for its Pentium 4 and 64-bit Itanium processors; and details of the company's chip set and memory roadmap.
As it gears up for IDF, Intel is struggling to bring Pentium 4 performance to the point where the company can disclose a launch date, according to observers. Separately, the company alsoappears to have been unable to bring its 64-bit Itanium processor to the promised introductory target speed of 800 MHz. At the Linux World show little more than a week ago, Intel was demonstrating a
500-MHz pre-production Itanium processor, while NEC Corp. was
showing an Itanium-processor server that company executives said
was well under the 800-MHz threshold (see Aug. 16 story).
Moreover, Intel has confirmed that IDF will not include technical
sessions discussing the company's desktop-PC chip set and
memory roadmap. The decision not to disclose its upcoming plans
in these areas will leave attendees waiting for official word from Intel
as to how it hopes to address its future markets -- information that
is particularly sought after following the company's recent decision
to include SDRAM memory in its Pentium 4 roadmap.
On the processor front, Intel has been working feverishly to get its
Pentium 4 up to 1.4-GHz to exceed the 1-GHz speed of its Pentium III MPUs, according to analysts. "Intel wants to make sure
the next-generation processor outperforms Pentium III, and will hold
off the Pentium 4 launch until it does," said Nathan Brookwood, an
analyst at InSight64 in Saratoga, Calif. "The Intel Developer Forum
will be a sure tipoff whether it has achieved this goal or not."
The Pentium 4's performance is dictated by how well Intel handles
its new 20-stage deep-pipeline architecture, said Bert McComas,
an analyst at InQuest Research Inc. in Gilbert, Ariz. "This compares
with the 12-stage pipeline of Pentium III. Any time you make a
radical move to a much deeper pipeline, you can lose 20% to 30%
an overall processor performance until you fine-tune the
architecture," he said.
The deeper pipeline increases PC-system speed greatly, allowing
the Pentium 4 to reach a new speed-grade pinnacle. Jumping from
a 12-stage to a 20-stage pipeline is a major challenge, an Intel
spokesman noted. However, he said IDF technical sessions this
week will detail how the company has fine-tuned the new processor
architecture to overcome any loss of data throughput or
performance. "It's not an issue," he said.
Nevertheless, McComas told the recent Platform 2000 Conference
in San Jose that the deeper pipeline was causing Pentium 4 to run
at the same data rate as the 1-GHz Pentium III. Brookwood said
the problems are solved by intensive fine-tuning of other areas of
the processor operation, with Intel using its "trache cache"
technique and refining the pre-fetch algorithms.
Intel faced the same dilemma when it moved from Pentium Pro's
five-stage pipeline to Pentium III, McComas said. "It didn't go as
smoothly as Intel would've liked, but they solved the technical
problem of going to a deeper pipeline with more stages."
At the forum, observers will also see whether the 64-bit Itanium has
reached its targeted speed of 800 MHz. As with Pentium 4, Intel
isn't expected to set an Itanium launch date until it has met its
announced targets. Analysts said it wasn't encouraging that a
headlined show like the recent Linux World failed to bring out any
Intel's struggle to take the Itanium to higher speeds is an issue
other 64-bit MPU chip makers are facing, according to Brookwood.
"Sun Microsystems has had similar long delays trying to get its
new UltraSparc III to market at 750 MHz. Compaq has also had
delays bringing out its next-generation Alpha chip. Intel isn't alone,"
Because of the company's dominant role in directing new PC
architectures, much of the consumer computing industry will also
be looking to learn more about Intel's plans as they relate to
chip sets and memory. However, Intel late last week told EBN that
Peter MacWilliams, an Intel fellow and director of platform
architecture for the company, won't make his customary
desktop-PC chip set and memory roadmap presentation at IDF.
Calling Intel's decision "amazing," McComas said, "The whole
world is waiting to hear what Intel is going to do, and apparently
they intend to try to keep everyone in the dark. IDF is no better
place for Intel to communicate with all segments of industry. I can't
believe they wouldn't provide everyone with their chip set and
memory roadmap which everyone is waiting for."
While the company did not detail its decision, McComas said he
suspected that Intel might have pushed out the discussion
"because they are scrambling to put together a new cohesive
roadmap after going to SDRAM memory, and probably
double-data-rate [DDR] for Pentium 4 processors."
As previously reported, McComas released confidential roadmap
data showing that Intel plans to introduce a mainstream Pentium 4
called Northwood in the second quarter of 2001 using either an
upgraded Tehama-E chip set supporting Direct Rambus DRAM or
an alternative Brookdale chip set supporting PC133 SDRAM.
McComas said he also expects Intel to allow third-party vendors to supply DDR chip sets for Penitum 4. In order to avoid legal problems with its partner, Rambus Inc., Intel is likely not to officially license third-party DDR chip set suppliers, but simply to "look the other way" when the core-logic devices are rolled out, McComas said.