| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 7363.1 | | PCBUOA::KRATZ | | Mon Feb 24 1997 12:43 | 5 |
| The Celebris GL 5xxx can't use Pentium with MMX technology
until Intel comes out with a Overdrive solution. You can
bump up to a "regular" 200Mhz Pentium, however (even tho
there never really was a Celebris GL 5200).
K
|
| 7363.2 | more info ... | LEXS01::lexser8.lex.dec.com::lombardi | PCBU Technical Support | Tue Feb 25 1997 06:50 | 5 |
| Is there a part # for the 200 mhz CPU (e.g. DT-xxxxx). And also, what jumpers need to be changed
on the motherboard to allow you to realize the 200 mhz clock speed.
Thanks in advance,
|
| 7363.3 | | WRKSYS::mccasa.eng.pko.dec.com::DUTTON | There once was a note, pure and easy... | Mon Apr 14 1997 14:26 | 4 |
| Can an AMD K6 be installed in a Celebrix 5xxx series,
or is this another "need an overdrive version" case?
(or maybe "need a new bios?" :)
|
| 7363.4 | | QUARK::LIONEL | Free advice is worth every cent | Mon Apr 14 1997 14:29 | 4 |
| AMD does not suggest the use of the K6 as a "Pentium upgrade". It requires
specific BIOS support, which I'm sure the Celebris 5xxx series doesn't have.
Steve
|
| 7363.5 | | DABEAN::REAUME | http://www.dreamscape.com/johnrea | Wed Apr 16 1997 17:38 | 19 |
| The main concern with CPU upgrade (besides pin compatibility) is the
voltage issue and the system clock speed coupled with the core/bus
ratio. Even though the GL came with the P7 socket, it was designed
before the MMX Pentium (which has a 2.8 v core voltage and 3.3 v I/O).
As far as I can see the P5 200 Pentium should work if:
1) set sys clock to 66.6 MHZ - jumper J36 and J40 both ON
2) set core/bus freq to 3/1 - jumper J41 off and J48 ON
Obviously an upgrade from P133 or less to a P200 would show some
improvement, but you have to keep in mind that it would not be a 50%
increase as clock speed would lead you to believe. Too many other
factors come into play. I would still say that adding memory is the
cheapest way to boost perfomance.
-John R
|