Date: Wed, 24 Apr 1996 21:22:18 +0300 (EET DST) From: "Bror 'Count' Heinola" <count@key.hole.fi> To: jkh@time.cdrom.com (Jordan K. Hubbard) Cc: current@freebsd.org Subject: Re: MotherBoard Jumper Settings... Message-ID: <199604241822.VAA03459@key.hole.fi> In-Reply-To: <11318.830357714@time.cdrom.com> from "Jordan K. Hubbard" at Apr 24, 96 07:55:14 am
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Jordan K. Hubbard taisi sanoa: > > AFAIK, DX/4-100 CPU's run only at 3x33MHz _or_ 2x50MHz mode > > which should be jumper selectable on the motherboard. At least > > all motherboards (and CPU's, two AMD's and one Intel) have > > worked like that. > What's the memory clock on these beasts - 60Mhz? I've never owned a > DX4/100 and don't ever really plan to, I'm just wondering if the > motherboards require 60ns memory or will live happily with the 70ns > stuff. DX4/100 = 33MHz external or 50MHz external (clock tripled or clock doubled mode), DX4/120 = 40MHz external (clock tripled) 5x86-P75-S = 33MHz external (clock quadrupled) and it can be run as 4x40MHz too as I'm doing. There's supposed to be a real 160MHz part in existence but I haven't seen any on sale - not that I've looked very hard. > P.S. The Pentiums are cheap enough now that I just can't see investing > in 486 technology unless it's for a router or something. It's not the CPU, it's the RAM. If you plan to get 16M RAM for starters, one 16M 72-pin SIMM costs less than two 8M parts. And you can also drop those new 486-compatible chips on your old motherboard so you don't really have to buy nothing else than the new CPU. Though I haven't seen many 2+ year old motherboards which can take DX4/120 writeback cpu so it would really work in write back mode. -- Bror 'Count' Heinola % count@key.hole.fi % http://pobox.com/~count/ Pengerkatu 13b A5 % IRC: Count NIC: BH271 % FI-00530 HELSINKI % Work: bror@sms.fi % Roads? Where we're going, Cell: +358-40-5533-554 % Santa Monica Software % we don't need roads.
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