[rescue] Sun E4K CPU Upgrade

[Peter Stokes]

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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