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- From: stuart@lorelei.ece.drexel.edu (Stuart R. Harper)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: Secondary CPU cache for the Amiga
- Message-ID: <1992Nov5.195103.3611@cbis.ece.drexel.edu>
- Date: 5 Nov 92 19:51:03 GMT
- References: <OAHVENLA.92Nov1142539@lk-hp-9.hut.fi> <OD.6BadNetOA92-901-231p0_52c45b1f@piraya.bad.se>
- Sender: news@cbis.ece.drexel.edu
- Reply-To: Mike_Noreen@anet.bbs.bad.se (Mike Noreen)
- Organization: Drexel U. - CCD - E4
- Lines: 18
-
- In article <OD.6BadNetOA92-901-231p0_52c45b1f@piraya.bad.se>
- Mike_Noreen@anet.bbs.bad.se (Mike Noreen) writes:
- >> CHEAP?! Do you have ANY IDEA of what you're talking about? While DRAM may be
- >> cheap, FAST SRAM is NOT. As DaveH and some others have told, 040 is cheaper
- >> and more effective power boost than 030 and external cache.
- >
- >Yes, but if you've already got a A3000 (with '030), wouldn't it be rather nice
-
- >to double performance using - say - 512k SRAM? This wouldnt have to be very
- >expensive; less than one tenth of an average '040 accelerator for the A3000...
- >
- >---
- >
-
- While Mac's get nice speed increases with caches (up to 25% NOT 200%) I think
- most of that is because of the "cheesy" memory controllers that Mac's use. They
- don't seem to use the bursting ability of the 68030 and Apple normally supplies
- the MAchines with "slow" memory (80 ns) for machines that can use faster.
-