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To: Petz who wrote (36073)	4/17/2001 4:04:06 PM
From: jcholewa	Respond to of 275872

> That will hold the P4 back in the very apps on which it is > superior to Athlon -- encoding/decoding & Quake III. Well, there are more apps than that in which the bandwidth advantage of the i850 chipset gives the P4 [sometimes much] stronger performance than the Athlon. However, it is true that most people are oblivious to the following: A) Pentium 4 performs best in applications which thirst for high memory bandwidth B) Pentium 4 performs worst in applications which are not strongly affected by memory bandwidth C) The existence of i850's 3.2GB/s path from memory bus to cpu is largely responsible for (A) D) i845/DDR will drop the Pentium 4's memory bus to cpu path by 50%, to a meager 1.6GB/s which is in fact 25% lower instead of the 50% higher that the P4 currently enjoys compared to the competition E) Because of (D), the Pentium 4 will likely not retain its current advantage in high memory bandwidth applications. F) And (D) does not at all change (B) G) Therefore, P4 with i845/DDR may very well be a dismal performer. H) Here's to hoping that Intel is sandbagging and plans to release something better than a PC1600 chipset. Of course, I should note that Intel is rather unparalleled with cache and memory subsystem design, especially in this market, so I expect for their PC1600 motherboard to have substantially better memory performance than other PC1600 board on the market, possibly besting some of the PC2100 chipsets.     -JC