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Politics : Formerly About Advanced Micro Devices
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To: Tenchusatsu who wrote (100479)3/28/2000 3:49:00 PM
From: Ali Chen   of 1575984
 
<I don't consider those benchmarks to be valid, because an overclocked 440BX is running the SDRAM so far out of spec that it cannot be shipped in that manner..>

What a pile of nonsense, my dear. The benchmarks
are certainly valid as a proof of concept. And
the concept was very simple: the PC-133 SDRAM with 133FSB
system solution is SUPERIOR in performance relative
to twice-in-bandwidth and 10x more expensive
RAMBUS. This is an undisputable fact. And no one
implied that the 440 chip is shippable as is,
without little product re-engineering.

Then, your "running SDRAM so far out of spec" is
a total bull. First, the "spec" usually is written
based on subsystem functionality with certain
guardbands. Second, there is no real spec on
PC-100 besides ultimate compatibility with the
440BX chipset. Third, there are numerous reports
that the _current_ 440BX with _current_ crop of
PC-133 is functional and well up to 170MHz,
(see recent results on dot.com.jp sites).
This gives plenty of margins for you to settle
around 133 MHz.

<They tried the same thing that Tom did with
less success (in stability) than Tom claimed
to achieve.>
Too bad.
Your co-workers prove themselves as ignorants in this
case. I can tell you what to do to achieve
enough stability: you need to cool down the
440 chip when running at elevated frequencies.
Too bad your co-workers have little ideas about
thermal management, as it was also proven in certain
other system areas :)

What you better to admit is that some short-sighted
Intel manager has decided few years ago that
there will be never a need to combine AGP-133
with FSB-133, and dropped the requirement of
1:1 FSB/AGP ratio in the 440 chip. By some luck,
the chip has the PCI running out of independent
clock, and no overclocking happens if the system
uses a PCI video card.

- Ali,
the "screwer-driver"
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