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- Path: sparky!uunet!cs.utexas.edu!asuvax!chnews!tmcconne
- From: tmcconne@sedona.intel.com (Tom McConnell~)
- Newsgroups: comp.sys.intel
- Subject: RISC vs. CISC (Was: Re: P5 or Pentium)
- Date: 20 Nov 1992 18:37:09 GMT
- Organization: Intel Corporation
- Lines: 39
- Sender: tmcconne@sedona (Tom McConnell~)
- Distribution: world
- Message-ID: <1ejb8lINNos7@chnews.intel.com>
- References: <mu.2a8o@terapin.com> <DOCONNOR.92Nov20100231@potato.sedona.intel.com>
- NNTP-Posting-Host: thunder.intel.com
- Originator: tmcconne@sedona
-
-
- In article <DOCONNOR.92Nov20100231@potato.sedona.intel.com>, doconnor@sedona.intel.com (Dennis O'Connor) writes:
- >
- > mu@terapin.com (Mu Hong Lin) writes:
- > ] Will someone explain ( technially ) why RISC chips are so much faster
- > ] than CISC chips??
- >
- > RISC chips don't need to support obsolete mis-features from 10 years ago.
- > CISC chips generally do, because they are all old architectures.
- > --
- > Dennis O'Connor doconnor@sedona.intel.com
-
- To be fair, that answer may fit a particular part, but has nothing to do with
- the RISC/CISC question.
-
- The most simplistic answer is that RISC, being relatively simpler to build,
- can be made to clock faster. That way it may take five RISC instructions to
- duplicate one CISC instruction that takes five cycles, but it will finish first
- because it is running faster. For example, as I recall the first HP-PA
- (Precision Architecture) chip set was actually bonded to large copper
- "Finstrates" to dissapate heat because it ran so fast.
-
- In a more general sense, there is no clear winner in the RISC/CISC wars,
- although RISC seems to be gaining the edge, based on announcements from the last
- couple of years.
-
- Cheers,
-
- Tom McConnell
-
- Tom McConnell | Internet: tmcconne@sedona.intel.com
- Intel, Corp. C3-91 | Phone: (602)-554-8229
- 5000 W. Chandler Blvd. | The opinions expressed are my own. No one in
- Chandler, AZ 85226 | their right mind would claim them.
- --
- Tom McConnell | Internet: tmcconne@sedona.intel.com
- Intel, Corp. C3-91 | Phone: (602)-554-8229
- 5000 W. Chandler Blvd. | The opinions expressed are my own. No one in
- Chandler, AZ 85226 | their right mind would claim them.
-