Date: Mon, 19 Jan 1998 11:34:01 -0500 (EST)
From: "Stephen J. Gaudet" <>
Subject: Re: lx vs sx

Dear Chris

>Hey...I've been doing some thinking and I think it would make more sense
>for my to spedn $1500-$2000 on a nice new computer than get one that will
>only last me a year, so I think I will be going alpha (yeaa!)...anyways, I
>was wondering what the major differences between the lx and sx
>motherboards were...

The main difference between the LX and the SX is the cache design. The SX
has a total of two caches, primary on chip cache consisting of 16KB
instruction and 8KB data. There is a secondary 1mb cache on the motherboard.

The LX has a total of three caches, two build into the processor the third a
2mb cache located on the motherboard.  The primary cache consists of 16KB
instruction and 8KB data. The secondary cache is 96KB unified data and

In addition the SX has a 533Mhz limit in processor speed.  The LX on the
other hand will run up to a 600Mhz processor.

One other note, some 533Mhz LX processors can be clocked up to run at 600Mhz.

Performance is as follows:

PC164LX & SX
Processor     cache   	SPECint95  	SPECfp95
211PC-533MHz  1mb-7.5ns	12.4		16.1 <SX>
21164-533MHz  2mb-9ns	16.1		18.8 <LX>
21164-600MHz  2mb-9ns	17.9		19.9 <LX>


| Stephen Gaudet        |  ** Digital Authorized reseller **   |
| DCG Computers Inc.    | Alpha, Intel Pentium Pro systems and |
| 4 Sanborn Rd, Suite 2 | motherbds running NT, Linux, & UNIX  |
| Londonderry, NH 03053 |--------------------------------------|
| ph:603-421-1800 x 10 fax:603-421-0911  |
**** DCG SX Series 533Mhz Alpha UltraN System for $1995.00 ****

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