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- Path: sparky!uunet!noc.near.net!chaos!random.ccs.northeastern.edu!gbcacm
- From: gbcacm@ccs.northeastern.edu (grater boston chapter of the acm)
- Newsgroups: comp.sys.dec
- Subject: Re: VS3100/30 speed hack
- Message-ID: <1992Aug22.141435.5923@random.ccs.northeastern.edu>
- Date: 22 Aug 92 14:14:35 GMT
- References: <1992Aug21.094137.23@nsrvan.vanc.wa.us>
- Sender: news@random.ccs.northeastern.edu
- Organization: Comp. Sci. @ NU
- Lines: 17
-
- In article <1992Aug21.094137.23@nsrvan.vanc.wa.us> sysevm@nsrvan.vanc.wa.us writes:
- > I noticed upon opening up my VS3100/30 that the *only* changes between
- >it and the 'faster' VS3100/40 are the clock (66.6666 MHz vs 44.4444 MHz) and
- >a jumper. This is down to the chip part number.
-
- Even though the chips may be the same manufacturer's part number, they may have
- been selected by DEC for additional speed. Since the errors you can get from
- using chips that are too slow are random, unpredictable, temperature- and
- power-supply-dependent, it's not a good idea to try this.
-
- > Do you need additional cooling above 66 MHz?
-
- This is another reason not to try it; ICs draw more power at higher-speed
- operation.
- Peter Sherwood
- (617) 332-8880
- gbcacm@ccs.northeastern.edu
-