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- Path: nntp.uio.no!solace!news
- From: cmh@lls.se (Magnus Holmgren)
- Newsgroups: comp.sys.amiga.programmer
- Subject: Re: Processors
- Date: 22 Mar 1996 16:57:03
- Organization: ReqChange development
- Message-ID: <4iup7h$e79@fizban.solace.mh.se>
- References: <1424.6652T807T2165@darwin.topend.com.au>
- NNTP-Posting-Host: myrddin.lls.se
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- X-FTN-To: travis
- X-Newsreader: Spot 1.3a #26/NetGate 1.2
-
- In a message of 20 Mar 96, travis wrote to :
-
- t> Here are the very sad results using the same scene,antialiasing etc.
-
- t> DX2/66 8Mb RAM , cheap video accel etc.................28 mins 1 sec.
-
-
- t> My A4000/040/40Mhz 28Mb on Warp 4Mb on mboard all 60nS....52 mins 1 sec.
-
- t> That's a very big difference considering the DX2/66's clock speed is
- t> considerably slower than the Warp Engine. ie 66Mhz compared to 80 Mhz.
-
- Nope, the DX2 is faster. 66 versus 40. Not 80.
-
- Still, the difference shouldn't be quite that large, I agree there.
-
- t> You must remember that Motorola considers the processor speed to be the
- t> bus speed. The 040 actually runs at twice the bus speed.
-
- Motorola usually don't clock-double their CPUs (at least in the
- 680x0-series), though I've heard that there is one '040 version that
- actually do this (a 33/66 Mhz one), it is definitively not common practice.
-
- The fact that there is an internal clock in the '040 that runs the double
- bus speed doesn't mean the instruction execution is done with that speed.
- It is only used for syncing and similar.
-
- --
- Magnus Holmgren - Amiga programmer and enthusiast
-
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-