Article View: comp.sys.dec
Article #1423Re: VS3100/30 speed hack
From: grater boston chapter of the acm
Date: Sat, 22 Aug 1992 14:14
Date: Sat, 22 Aug 1992 14:14
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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
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Path: arc1-ca.pugleaf.net!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