Path: utzoo!attcan!uunet!convex!eugene!swarren
From: swarren@eugene.uucp (Steve Warren)
Newsgroups: comp.sys.amiga
Subject: Re: Kronos vs. Hardframe
Keywords: Kronos, Hardframe, controller
Message-ID: <3302@convex.UUCP>
Date: 21 Nov 89 21:02:38 GMT
References: <321@sed170.HAC.COM>
Sender: news@convex.UUCP
Reply-To: swarren@convex.COM (Steve Warren)
Organization: Convex Computer Corporation, Richardson, Tx.
Lines: 23

In article <321@sed170.HAC.COM> lee@sed170.UUCP (John Lee) writes:
>I've decided to purchase a SCSI hard disk controller and have narrowed my
>choices to two candidates, the Kronos and Hardframe controllers.  The former
>is the fastest Diskperf-rated but non-DMA controller, the latter being the
>second fastest Diskperf-rate but DMA controller.
>
The reason the Kronos can beat a DMA controller is because it has a 16-bit
path to memory.  Other controllers only have an 8-bit path to memory.  I
think that they have a significant performance improvement over other
controllers because of the path-width advantage.  Their literature is
misleading, claiming that DMA controllers are fundamentally inferior
when there is chip-ram contention.  This is a false claim, and it is
also unnecessary if the disk-perf results they published are true.
(Their disk-perf results were significantly better than all the others)

>Which should I buy?  I have heard many good things about the Kronos, but I
>am unaware of any reports of its performance when the CPU is heavily loaded.

Me neither.

--Steve
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