[rescue] Sun E4K CPU Upgrade

[Richard]

Makes sense and good to know

On Wed, 27 Jun 2018, at 7:31 PM, Mike Spooner wrote:
> Hi Richard,
> 
> Yes, you can mix 250, 336, 400 MHz CPUs (and even 464-MHz too) in the same
> chassis, but not on the same CPU/memory board.
> 
> Regards,
> Mike
> 
> On 27 June 2018 at 07:51, Richard <ejb at trick-1.net> wrote:
> 
> > Thanks Peter
> >
> > So based on the following I think it is safe to say its a 4000. And if I
> > understand what you are saying if I put 400Mhz CPU in then all I am going
> > to get is 336Mhz any way so probably no point in up reving the existing
> > CPU. Probably not supported (probably not an issue for a hobby machine)
> > but can you mix 336Mhz and 400Mhz CPU in the same chasis
> >
> > 8-slot Sun Enterprise 4000/5000, No Keyboard
> > OpenBoot 3.2.29, 9216 MB memory installed, Serial
> >
> > 0,0>    CPU Module Status
> > 0,0>-----------------------------------------------------------------
> > 0,0> MID  OK  Cache  Speed   Version
> > 0,0>-----------------------------------------------------------------
> > 0,0>  0 | y | 4096  |  336  | 00170011.20000507
> > 0,0>  1 | y | 4096  |  336  | 00170011.20000507
> > 0,0>  4 | y | 4096  |  336  | 00170011.20000507
> > 0,0>  5 | y | 4096  |  336  | 00170011.20000507
> > 0,0>  8 | y | 4096  |  336  | 00170011.20000507
> > 0,0>  9 | y | 4096  |  336  | 00170011.20000507
> > 0,0>-----------------------------------------------------------------
> > 0,0>System Frequency (MHz),fcpu=336, fmod=168, fsys=84, fgen=336
> >
> > and also that it is running at 336Mhz according to the System Frequecny
> > and an 83Mhz Gigaplane (is that the fsys number rounded up?)
> >
> > Regards
> >
> > Richard
> >
> > On Wed, 27 Jun 2018, at 4:29 PM, Peter Stokes wrote:
> > > Hi
> > >
> > > The limit would be the backplane. If it is a 4000 and not a 4500 then it
> > > originally would be limited to 336mhz. The rest will depend on part  nos
> > as to
> > > if they work correctly at 400. The 400 cpu will run at 336 if you do not
> > have
> > > the correct boards.
> > >
> > > I have some 400 compatible boards but no 400 cpus if you need them.
> > >
> > > Peter
> > >
> > > Sent from my iPhone
> > >
> > > > On 27 Jun 2018, at 00:56, Richard <ejb at trick-1.net> wrote:
> > > >
> > > > Hi Folks
> > > >
> > > > Looking for experience/guidance on CPU upgrade for my E4K.
> > > >
> > > > My E4K currently has
> > > > - 3xCPU boards with a total of 6x 336Mhz CPU's on board.
> > > > - I have 2x new CPU boards coming and they have 400Mhz CPU already on
> > > board.
> > > > - I also have an additional 4x 400Mhz CPU's on the shelf.
> > > >
> > > > I am therefore thinking/ looking to purchase 2 more 400Mhz CPU's so I
> > can
> > > upgrade all CPU's to the 400Mhz versions.
> > > >
> > > > when I look at the parts list for the E4K
> > > http://shrubbery.net/~heas/sun-feh-2_1/Systems/4u-Server/E4000.html
> > > >
> > > > I see there are a number of options
> > > >
> > > > 400MHz UltraSPARC II Module
> > > > 501-4995
> > > > 501-5425
> > > > 501-5585
> > > > 501-5235
> > > > 501-5661
> > > > 501-5762
> > > >
> > > > when I go to eBay I have found some different numbers for the CPU
> > Module
> > > i.e. 501-6009 or 501-5838 .
> > > >
> > > > I further note that the compatibility statements exist for each CPU
> > such as
> > > this for 501-5235
> > > >
> > > > Clock 501-2975 is not supported.
> > > > The E6000 and E6500 require Clock 501-5365 for a 5:1 clock ratio.
> > > > The E3x00, E4x00, and E5x00 require Clock 501-5365 for a 5:1 clock
> > ratio if
> > > 84MHz system boards are installed.
> > > > Clock 501-4286 or 501-4946 is supported in the E3x00, E4x00, and E5x00
> > if
> > > the centerplane and all system boards are 100MHz.
> > > > Clock 501-5365 is supported if 84MHz or 100MHz system boards are
> > installed
> > > in the E3x00, E4x00, and E5x00.
> > > >
> > > > Is it just a mater of inventorying my machine and working out which
> > modules
> > > are compatible with what is in there already or is there an easier way?
> > > >
> > > > Appreciate thoughts/insights.
> > > >
> > > > Regards
> > > >
> > > > Richard
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