Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!uunet!crdgw1!crdos1!davidsen
From: davidsen@crdos1.crd.ge.COM (Wm E Davidsen Jr)
Newsgroups: comp.sys.ibm.pc
Subject: Re: BEWARE OF SAI SYSTEMS IN SHELTON, CT
Message-ID: <1611@crdos1.crd.ge.COM>
Date: 14 Nov 89 19:55:59 GMT
References: <6268@tank.uchicago.edu>
Reply-To: davidsen@crdos1.UUCP (bill davidsen)
Distribution: usa
Organization: GE Corp R&D Center
Lines: 47

In article <6268@tank.uchicago.edu>, phd_jacquier@gsbacd.uchicago.edu writes:
|  This is a follow up on previous posters about chips pushed beyond their
|  guaranteed speed:
|  

	[  posting about a 10MHz chip run at 12 MHz  ]

|    These guys have lie about a practice that is disapproved by the 
|  chip's manufacturer and is not common (hopefully).

  First, this is a common practice with the 386, and I suspect that if
it is less common with the 286 it's because the chips are cheaper. Look
at ads in the back of most PC magazines. If you read the fine print
many state clearly that they are using pushed chips, particularly the
386.

  Second, unless Intel has changed what they do for chip testing or
unless one of my coworkers got incorrect information directly from
Intel... the chips are identical, made at the same time one the same
line. The 12MHz chips are tested at 12MHz, the 10MHz chips at 10MHz.
Now, *if* a chip doesn't pass 12MHz but did pass 10MHz, you might get one
which is funny at 12. I would certainly buy a full rated chip if it's
available as an option, but only because I am conservative when given
the choice.

  Any chip will run hotter at 12 than 10, but the ink on the case
doesn't make the slower rated part run hotter. If the vendor did a good
job of checking the chips and selecting those which will be reliable at
12MHz the machine should not have any problems caused by the chip
running hotter than a rated part.

  I suggest that you call the vendor and politely tell them that there
was a misunderstanding, and that you would like to swap the chip for a
part rated for the full speed. There's a good chance that they will do
it, although they will expect you to pay the price difference and
shipping I suspect. From their standpoint you have a machine which is
working fine and you are just upset about the label.

  I don't think that you have a problem, nor that they are as evil as
you conclude. I hope that you are able to either work out a swap or
become comfortable with what you have. It's a shame to get a new box and
not like it.
-- 
bill davidsen	(davidsen@crdos1.crd.GE.COM -or- uunet!crdgw1!crdos1!davidsen)
"The world is filled with fools. They blindly follow their so-called
'reason' in the face of the church and common sense. Any fool can see
that the world is flat!" - anon