Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!apple!sun-barr!decwrl!granite!rwood
From: rwood@granite.dec.com (Richard Wood)
Newsgroups: comp.sys.dec
Subject: Re: Looking for Benchmarks Between VAXstation 3100 and SUN 3/80
Message-ID: <511@granite.dec.com>
Date: 24 Jul 89 19:47:03 GMT
References: <1216@gvgpsa.GVG.TEK.COM> <9642@alice.UUCP> <18651@usc.edu>
Reply-To: rwood@granite.DEC.COM (Richard Wood)
Organization: DEC WSE, Palo Alto CA
Lines: 27

In article <18651@usc.edu> chris@skat.usc.edu (Christopher Ho) writes:
> In article <9642@alice.UUCP> debra@alice.UUCP () writes:
>> I compared a large number of systems, including:
>> Microvax 3200 with the ninth edition unix. (this is more or less 
>>				the same then the vaxstation 3100)
>
> Actually, if I recall correctly, the VAX 3100, 3300 and 3400 incorporate
> a slightly slower version of DEC's CMOS VAX chipset that is rated at 2.4
> VUPs (versus 2.7 for the 3200/3500/3600/62x0).  Thus, your 3200 numbers
> timings should be divided by 0.89.  That makes integer stuff slightly
> slower than the 3/80, but FP calculations still look significantly
> faster.

The VAX 3100 machines (VAXstation 3100 and the new microVAX 3100 and
VAXserver 3100) have the same clock speed as the VAXstation 3200, and
thus should have generally identical performance.  Occasional
deviations will be the result of significant differences in the
internal bus structure; i.e., the fact that the "busless" 3100 doesn't
channel disk and graphics traffic through the Qbus as the 3200 does.

The microVAX 3300 and 3400 both use the lower clock speed, as noted
above.  I believe the faster clock speed is 90ns, and the slower is
100ns.
-- 
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Richard Wood         Corporate Worksystems Team          Digital Equipment Corp.
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