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To: mauser96 who wrote (43651)1/2/1998 7:54:00 PM
From: paul flint  Read Replies (2) | Respond to of 186894
 
I don't think "Slot 1" was a marketing decision. Even though at first it might seem like it's a more expensive architecture, or a way to lock out the competition, it has a real technical purpose. In fact, it's probably the cheapest way to achieve high-reliability, high-performance, tight linkage between the cpu and cache. Performance tests show the clear superiority of the Pentium-II in 32-bit operation, so it obviously works.

The fact that it works well is getting it adopted rapidly. The fact that it's more expensive to achieve the same thing with socket 7 will hold back the competition at the high end. Unfortunately for the competition, no one but Intel could pull off a change like this, from Socket 7 to Slot 1 and set a new standard. Can you imagine AMD trying to introduce its own version of a solution for the cache-linkage problem and getting anyone to adopt it absent Intel's approval? Not likely, eh?



To: mauser96 who wrote (43651)1/2/1998 11:33:00 PM
From: Paul Engel  Read Replies (1) | Respond to of 186894
 
Lucius - Re: "slot 1 costs about $20 more than socket 7."

First of all, what do we mean by this?

If we talk about a socket 7 PGA socket and an SEC edge connector - the costs are only a few dollars apart. Just how expensive do you think an edge connector is - they are a part of nearly every mother board. And the Slot 1 is ONLY A FRIGGING EDGE CONNECTOR!

Next, Intle includes the L2 cache on the Pentium II SEC. This eliminates an L@ SRAM and possibly L2 SOCKET - advantage Intel by perhaps $10 or $15.

The chip set is another item, Intel provides a single chip 440LX as the Northbridge chip set for Pentium II's.

Standard socket 7 chip sets cannot reduce the number of chips below ONE - like the 440LX - so it then becomes a matter of what the 440LX chip costs vs what a competitive chip/chip set costs for a Pentium/K6.

I recollect Intel sells the 440LX for $35 - I may be off a few dollars here. The salient point is - do Socket 7 chip set vendors sell a chip set for $15 - to account for a $20 difference?

Paul



To: mauser96 who wrote (43651)1/4/1998 12:37:00 AM
From: Ali Chen  Read Replies (3) | Respond to of 186894
 
<I understand slot 1 costs about $20 more than socket 7.>

This is a strong underestimation. If you would check out
www.pricewatch.com
you will find out that the average price difference is about $80:

Category: P-II MB Pentium MB difference
---------------------------------------------------
Lowest $139 $62 $77
#19 $167 $83 $84
#39 $179 $96 $85
--------------------------------------------------

If you add the higher cost of P-II (+$100-$300), there
remains very little justification for the mediocre
performance increase(~20-25%).