[rescue] Sun E4K CPU Upgrade

[Mike Spooner]

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
> > > _______________________________________________
> > > rescue list - http://www.sunhelp.org/mailman/listinfo/rescue
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