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- Path: sparky!uunet!pipex!doc.ic.ac.uk!uknet!qmw-dcs!exorcist
- From: exorcist@dcs.qmw.ac.uk (HORSNELL)
- Newsgroups: comp.sys.acorn.tech
- Subject: re: 35MHz ARM3
- Keywords: 35MHz
- Message-ID: <1992Dec17.103726.23192@dcs.qmw.ac.uk>
- Date: 17 Dec 92 10:37:26 GMT
- Sender: usenet@dcs.qmw.ac.uk (Usenet News System)
- Organization: Computer Science Dept, QMW, University of London
- Lines: 16
- Nntp-Posting-Host: auxta2.dcs.qmw.ac.uk
-
-
- Hello,
-
- Where processing has a high cache hit-rate the speed should
- be that much quicker (ie, 10Mhz worth of more instructions
- processed). However, a problem occurs due to the memory
- speed. Imagine, the memory bus is a highway with processor
- access as a filter road. Most other traffic has priority.
- The A400/1 has a two lane highway, the A5000 has a three lane
- highway. So when the A400/1 has a traffic jam, the A5000
- has only hit 66% capacity and so the processor can still
- access memory for whatever it needs.
-
- Sorry if this is too simplistic but I do like the analogy.
-
- Jason.H.
-