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- Newsgroups: comp.sys.intel
- Path: sparky!uunet!europa.asd.contel.com!emory!swrinde!elroy.jpl.nasa.gov!decwrl!netcomsv!butch!iscnvx!news
- From: J056600@LMSC5.IS.LMSC.LOCKHEED.COM
- Subject: Re: 486/66 .. Into a 486/50 motherboard?
- Message-ID: <92351.46019.J056600@LMSC5.IS.LMSC.LOCKHEED.COM>
- Sender: news@iscnvx.lmsc.lockheed.com (News)
- Organization: Lockheed Missiles & Space Company, Inc.
- Date: Wed, 16 Dec 92 20:54:17 GMT
- Lines: 28
-
- In <1992Dec16.155510.11854@cs.odu.edu>:
-
-
- >Is it possible to replace the 50MHz 486DX chip on a 486/50 mommyboard with a
- >66 MHz DX/2?? I am thinking of replacing my CPU, but I don't want to replace
- >my entire motherboard if I don't have to. Thanks.
-
- Sure, you probably could, but would it be worthwhile? You'd have to change
- the clock crystal and the CPU. In fact, the clock crystal would have to be
- *slowed down* from 50 MHz to 33 MHz. The addition of the DX2 would make the
- CPU behave like a 66 MHz machine (instead of 50), but the rest of the machine
- would act like a 33 MHz machine (again instead of 50). If you are using
- *very* CPU-intensive applications, this might help. If you're doing things
- which requires mostly disk, video or memory, a DX2/66 might be almost a
- downgrade from a DX/50. Most people I know who have seen both (I've never
- seen a DX2/66) say there's virtually no difference in performance.
-
- Another requirement for a DX2/66 is *lots* of external cache--without at
- least 256K, the DX/50 would probably be faster because the DX2/66 would
- encounter a lot of wait states without it. Many people even advocate a 512K
- cache. Again, I haven't seen it, so I'm relying on opinions of people who
- know more about the DX2/66 than I do.
-
-
- Tim Irvin
- *****************************************************************************
- Microsoft Windows--from the folks who brought you EDLIN.
-
-