HPE 9000 and HPE e3000 Servers
cancel
Showing results for 
Search instead for 
Did you mean: 

PA-RISC processor interchangeable

 
HP Cluster
Advisor

PA-RISC processor interchangeable

Is it possible to place a PA8600 from a N4000 (rp7400) into a L2000 (RP5450)?
10 REPLIES 10
Pete Randall
Outstanding Contributor

Re: PA-RISC processor interchangeable

It probably depends on the system board being the same. If the L2000 already has PA8600(s) in it, then the answer would be yes.


Pete


Pete
Jeff Schussele
Honored Contributor

Re: PA-RISC processor interchangeable

Hi,

It probably depends on who you talk to.
I suspect HP would say no because I believe they charge more for an N-class processor.
But as Pete points out, it can be done provided rev levels match. I've seen posts in the past where it was done successfully.

Rgds,
Jeff
PERSEVERANCE -- Remember, whatever does not kill you only makes you stronger!
Steven E. Protter
Exalted Contributor

Re: PA-RISC processor interchangeable

I don't think you can do that.

the specifications on the rp5450 are PA8700


http://www.hp.com/products1/servers/rackoptimized/rp5400series/specifications/index.html


SEP
Steven E Protter
Owner of ISN Corporation
http://isnamerica.com
http://hpuxconsulting.com
Sponsor: http://hpux.ws
Twitter: http://twitter.com/hpuxlinux
Founder http://newdatacloud.com
Jeff Schussele
Honored Contributor

Re: PA-RISC processor interchangeable

Hi Steven,

The *new* rp54xx line has PA8700, but the earlier systems - definiteley when they were still called L & N class - were PA8600.
That's why we qualified the responses with the board info.

Rgds,
Jeff
PERSEVERANCE -- Remember, whatever does not kill you only makes you stronger!
Pete Randall
Outstanding Contributor

Re: PA-RISC processor interchangeable

In my (outdated) reference, the rp5450 can be ordered with PA8600 processors at $6500/each. There are also several notes: "Processor frequencies should not be mixed", "PA8699 550MHz CPU runs at 540MHz in rp5450", and "hp server rp5450 Carrier Grad Enterprise system (Z7535B) does not support 540MHz".

Interestingly enough, as Jeff pointed out, the exact same CPU for a rp7400 goes for $13000/each!


Pete


Pete
Steven E. Protter
Exalted Contributor

Re: PA-RISC processor interchangeable

I have 550 MHz rp5450 CPU's I should have checked.

I'm going to go out on a limb here and predict HP will say no.

Unless it really is the same CPU.

Guess I'm just off today.

SEP
Steven E Protter
Owner of ISN Corporation
http://isnamerica.com
http://hpuxconsulting.com
Sponsor: http://hpux.ws
Twitter: http://twitter.com/hpuxlinux
Founder http://newdatacloud.com
Joshua Scott
Honored Contributor

Re: PA-RISC processor interchangeable

The N-class/rp7400 CPUs are not interchangable with the L-class/rp54xx CPUs. I've personally tried this before, and it doesn't work.

-Josh
What are the chances...
Pete Randall
Outstanding Contributor

Re: PA-RISC processor interchangeable

Sorry - "PA8600", not "PA8699"!

Pete
Pete Randall
Outstanding Contributor

Re: PA-RISC processor interchangeable

I suspect Josh is right on this (especially since he tried it). The two cpu's show entirely different product numbers: A6146A for the rp5450, and A5866A for the rp7400. This could either be smoke and mirrors or truly different CPUs - I'm now leaning toward the conclusion that they're different.


Pete


Pete
Joshua Scott
Honored Contributor

Re: PA-RISC processor interchangeable

I didn't try it myself, but someone who worked with me did. It didn't work, but it's also entirely possible that he didn't know what he was doing, or didn't change the dipswitch settings.

Some Reasons why it *MIGHT* work

The Manufacturer's Part Number on the Processor Support Modules are the same for the L and N class.

The CPUs have the same physical footprint

The Rev. B&C System boards for the N4000/rp7400 and the rev. B System board for the rp5430/rp5470 have the same dipswitch settings for the same speed CPUs.

FYI, here are the settings for the 550MHz CPU in the L2000:

off off on off on

-Josh

What are the chances...