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- Path: sparky!uunet!crdgw1!rdsunx.crd.ge.com!ariel!davidsen
- From: davidsen@ariel.crd.GE.COM (william E Davidsen)
- Newsgroups: comp.sys.intel
- Subject: Re: Why shouldn't I buy Cyrix 486 ??
- Message-ID: <1992Sep8.195847.19770@crd.ge.com>
- Date: 8 Sep 92 19:58:47 GMT
- References: <Bu4GDD.LxF@news.cso.uiuc.edu>
- Sender: usenet@crd.ge.com (Required for NNTP)
- Reply-To: davidsen@crd.ge.com (bill davidsen)
- Organization: GE Corporate R&D Center, Schenectady NY
- Lines: 25
- Nntp-Posting-Host: ariel.crd.ge.com
-
- In article <Bu4GDD.LxF@news.cso.uiuc.edu>, jas37876@uxa.cso.uiuc.edu (John A. Slagel) writes:
- |
- | I can, all things considered, upgrade my non-coprocessed 386-33,
- | to the Cyrix 486-33 for ~$150.
-
- If this is the chip I think you mean, which goes in a 386
- motherboard, as long as you realize that it is not as fast as an Intel
- 486DX you should be fine. The upgrade has three caveats:
-
- - I'm told you need a 387 socket (like the Intel FastCAD chip) and
- can't use it in an old 386 with 287 cocket (only made in 1986-87).
-
- - The 1k vs 8k cache hurts performance quite a bit relative to a 486DX
-
- - The lack of burst mode refresh hurts quite a bit relative to any 486
-
- Compatibility seems good and performance falls between the Intel 386
- and 486 chips. The FPU may actually be a bit faster than the Intel, say
- a few percent, but the memory bandwidth is way down as listed above.
-
- Hope this helps with the decision.
-
- --
- bill davidsen, GE Corp. R&D Center; Box 8; Schenectady NY 12345
- I admit that when I was in school I wrote COBOL. But I didn't compile.
-