Date: Sun, 29 Sep 1996 22:30:43 -0700 From: "Michael L. VanLoon -- HeadCandy.com" <michaelv@MindBender.serv.net> To: "David E. O'Brien" <obrien@nuxi.cs.ucdavis.edu> Cc: freebsd-hardware@FreeBSD.ORG Subject: Re: H/W recommendation Message-ID: <199609300530.WAA06249@MindBender.serv.net> In-Reply-To: Your message of Sun, 29 Sep 96 21:57:53 -0700. <199609300457.VAA01836@relay.nuxi.com>
next in thread | previous in thread | raw e-mail | index | archive | help
>I'd still love a specific URL to this information at www.intel.com.
Don't have any specifics, sorry. This stuff has just gotten lodged in
my head from lots of exposure to many different sources... :-)
The information is there, you just have to do a lot of digging (and
you often have to read Adobe Acrobat documents).
>> multiple of 30, runs the PCI bus at 60MHz. The only other option
>> that's left is multiples of 25 (75MHz Pentiums).
>Thanks for the info. I was expecially interested in knowing about the
>75MHz pentiumns. I suspected that a 60/66 MHz pentium could be better
>than a 75MHz since they run the memory and PCI buses faster.
If I'm not mistaken, the PCI spec specifically dictates that PCI
chipsets will run in the range from 25-33MHz.
75MHz Pentiums are not "premium" processors. :-)
Now, the only thing wrong with 60/66MHz parts is that they're a
"legacy" design. A P66 probably does run faster than a P75 in many
circumstances. But the 60 and 66MHz parts were built with the
original 5-volt design. If you have a motherboard old enough to have
one of these chips in it, it's probably also too old to run any of the
newer CPUs. Everything from the P100 on up uses a physically slightly
different design, with a 3.3V (or somewhere a little over 3) voltage.
I don't remember whether the P75 uses the old socket or the new one,
but I would lean toward betting on the new one.
So, avoid P60/66 systems simply because they will be much harder, and
potentially more expensive, to upgrade.
>People still living off their parents upgrade their systems quite
>reguarly here at my University (1.5hrs from Silicon Valley). So often
>you can find pretty good buys on used parts (for use poor grad students.
>:-) ).
Well, if you DID get a 75MHz Pentiums system, make sure you pay the
right price for its "crippled" performance. Then, if at all possible
(i. e. the motherboard supports it, and you can afford it), yank that
sucker out, get a P100, minimum, and crank it up.
-----------------------------------------------------------------------------
Michael L. VanLoon michaelv@MindBender.serv.net
--< Free your mind and your machine -- NetBSD free un*x >--
NetBSD working ports: 386+PC, Mac 68k, Amiga, Atari 68k, HP300, Sun3,
Sun4/4c/4m, DEC MIPS, DEC Alpha, PC532, VAX, MVME68k, arm32...
NetBSD ports in progress: PICA, others...
-----------------------------------------------------------------------------
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199609300530.WAA06249>