NetNews Usenet Archive 1993 #3/NN_1993_3.iso/spool/comp/sys/ibm/pc/hardware/37260

Text File | 1993-01-27 | 1.7 KB | 35 lines

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From: [e-mail] (Peter Herweijer)
Subject: Re: Diff between 486DX2-50 and 486DX-50
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Organization: University of Nijmegen, The Netherlands
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Date: Tue, 26 Jan 1993 11:38:12 GMT
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In <[e-mail]> [e-mail] (David Ratte) writes:

>The difference between a 486DX50 and DX2-50 depend on how much you plan to use
>your computer and for what. A DX-2 system runs on the chip at 50MHz but for
>external access like to the bus or memory it slows down to 25ishMHz.
>Performance is about 40 to 60% of that of a true DX50 depending on the
>application running. If it is just working off what is in the INTERNAL cache
>ram it flies along very close to the speed of a DX50. If the application
>require frequent writes to the bus or external cache, system cards, etc its
>performance degrades almost to the point of a 25mhz system. But suposedly it
>averages out to the 40-60% of a DX50's speed.

Oh, please, if you don't have REAL data don't pretend as if you do.
A 486DX25 runs at more than 50% the speed of a 486DX50 in identical
systems.  Where did you get the idea that a DX2-50 can ever drop
to 40% the performance of a DX50 --- less than its single-clocked
nephew?

I don't have exact data on hand, but it's more like 65-90% of a DX50.

Peter Herweijer
[e-mail]