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To: Mary Cluney who wrote (120999)12/6/2000 10:26:21 PM
From: WTSherman  Read Replies (2) of 186894
 
<The workstation I'm referring to are those terminals that are tied to a network and interact with servers (NT, Unix, or S390 type)and the work they do relates to transaction processing. Many of these applications require that each workstation process 20 or 30 transactions an hour. Many of these transactions have to go through edit or validation processing wherein each time the enter key is pressed and hundreds of instructions are performed using many I/O functions the computer must return control to the client computer. <

I beg to differ... The facts are quite clear in regard to the corporate market. The previous trend of 30-36 month replacement cycles for desktop PC's is now stretching out to 42-48 months for machines that are 500Mhz and above. For desktop applications there is no appreciable advantage to using a much faster PC. For enterprise or departmental applications the overwhelming majority of the response time is related to the server and the network. Moreover, the trend is for everyone, but power users, to use browser interfaces as the interface with these applications, whereby the client PC is little more than a dumb terminal.

Also, the incremental value of improved performance is not nearly as great as it was a few years ago. A 50% improvement means a lot more when the process is taking 5-6 seconds per transaction than it does when the process is taking 1-2 second per transaction.

Lastly, the previous replacement cycles were driven as much or more by the costs associated with HHD and memory upgrades to old machines(needed by new windows apps), as it was by performance improvement from new ones. These are no longer major concerns thanks to the exponential decreases per unit of cost of storage and memory in the past few years.
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