Date: Thu, 16 May 1996 15:16:48 +0300 (EET DST) From: Narvi <narvi@haldjas.folklore.ee> To: "Serge A. Babkin" <babkin@hq.icb.chel.su> Cc: hackers@freebsd.org Subject: Re: EDO & Memory latency Message-ID: <Pine.BSF.3.91.960516151444.25743C-100000@haldjas.folklore.ee> In-Reply-To: <199605161047.QAA13555@hq.icb.chel.su>
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On Thu, 16 May 1996, Serge A. Babkin wrote: > > > > > > On Thu, 16 May 1996, Serge A. Babkin wrote: > > > > > I have just tried lmbench and the numbers it gives are looking > > > slightly strange for me. It shows memory latency upto 500ns while > > > I have 60-ns EDO memory in a Pentium/75 box. Okay, its external > > > clock is 25MHz, this gives 40ns, one wait state, it gives another 40ns, > > > it gives 80ns, but why the overhead is over 400ns ? > > > > The external bus of the Pentium 75 should be 50Mhz. It is 1.5x50, not > > You're right, I was wrong. So, the guestion gets yet more interesting :-) > > > 3x25. 60ns EDO sounds like an overkill for a Pentium 75 though... > > I would use a quicker processor and (120) with ordinary memory > > (fast-page, 70ns) - but the likes may vary. > > I just got them for the same price as ordinary memory and of course > I choosed EDO. It costed me $125 per 8M SIMM. What? $125 for 8M 60ns EDO? I hope I lived where you do... :-( It also invalidates my claim whetever or not use the memory on a Pentium 75... > > -SB > Sander .sigless on the moment
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