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Article #1410

HELP WANTED: 486SX/25 FPU speed

#1410
From: Xinghao Chen
Date: Fri, 08 Jan 1993 15:40
26 lines
1420 bytes

I have had a chance to run a utility called Speed200 on a 486SX/25
mother board with an on-board 486SX/25 INTEL CPU. It has no cache. It
has 8MB RAM. I loaded it MicroSoft DOS 5.0 and Windows 3.0. 
It uses a SVGA with 1MB VRAM.

The Speed200 gave me the figer that at the Turbo mode, the machine
runs at 83 MHz for CPU and 7 MHz for FPU. The vedio speed is 2987 char/ms.
Turning off the turbo mode, it runs at 32 MHz for CPU and 3 MHz for FPU.

The mother board has a 486DX socket. I wonder how much I can benifit
by putting a 486DX2/50 CPU on the board. I like to increase the FPU speed 
for graphic applications such as simple image processing and multi-media
applications (viewing TV in a window).

One thing that I do not understand is that most 486SX/25 mother board
that I have searched do not have cache capacities on the mother board.
I wonder what is the reason.

Please advise me on this issue since I am in the process of purchasing
one. 

Thanks. Please reply by email.

-Chen        xchen@caip.rutgers.edu
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Message-ID: <Jan.8.10.40.22.1993.20828@staccato.rutgers.edu>
Path: arc1-ca.pugleaf.net!sparky!uunet!dziuxsolim.rutgers.edu!staccato.rutgers.edu!xchen

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Path: arc1-ca.pugleaf.net!sparky!uunet!dziuxsolim.rutgers.edu!staccato.rutgers.edu!xchen
From: xchen@staccato.rutgers.edu (Xinghao Chen)
Newsgroups: comp.sys.intel
Subject: HELP WANTED: 486SX/25 FPU speed
Keywords: 486SX/25 FPU speed
Message-ID: <Jan.8.10.40.22.1993.20828@staccato.rutgers.edu>
Date: 8 Jan 93 15:40:22 GMT
Organization: Rutgers Univ., New Brunswick, N.J.
Lines: 26