MSFT Internet Explorer vs. NSCP Navigator Message Board

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Technology Stocks : MSFT Internet Explorer vs. NSCP Navigator

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To: Thure Meyer who wrote (23224)	4/11/1999 2:26:00 AM
From: rudedog	Read Replies (2) of 24154

There is also an article about MS demonstrating a 64-bit version of Windows 2000. With a remarkable demonstration on an 4-way Alpha that showed, indeed its faster. An amusing quirk is that MS is considering releasing an interim 36-bit version. Let's not get confused between 36 bit and 64 bit. 36 bit is extended addressing in a 32 bit architecture. It is Intel's usual "segmented" scheme, a lot like the original 80286 segmentation except running over 32 bit registers. This is currently available on Xeon - there's just no easy way to exploit it. Page tables, pointers, everything is 32 bit except for the ability to execute some segmented addresses. So this really only enables the use of large memory in a "bank switched" operation. You will notice that no one is doing any big database or other performance work using 36 bit addressing. There's a reason for that. The 64 bit system is very different. It provides a different PTE structure, 64 bit pointers, 64 bit register operations. That's where the performance comes from. Kind of where Unix was in 1994 - at least the DEC OSF flavor.

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