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#1 (**permalink**) 01-16-2008, 12:56 PM

When will the US-IV processor start appearing in workstations like
Blade 2500, etc.?

Is the US-IV pin compatible with the US-IIIi (I believe it is
with the US-III) and will one be able to swap a US-IV CPU into a
Sun Fire V250 (US-IIIi)?

The naming convention for these products is horrible (US-III, IIIi,
and now these Opteron machines with the w's and z's, 20 vs. 200)
and doesn't get better ...

#2 (**permalink**) 01-16-2008, 12:56 PM

At 27 Jul 2004 14:44:04 -0700, bronco_nagurski@hotmail.com (Bronco Nagurski) writes:

> When will the US-IV processor start appearing in workstations like
> Blade 2500, etc.?

You're asking *us*? Try talking to Sun under an NDA....

> The naming convention for these products is horrible (US-III, IIIi,
> and now these Opteron machines with the w's and z's, 20 vs. 200)
> and doesn't get better ...

It almost sounds like Sun is taking a page out of HP's naming
conventions. HP has a zx2000 (Itanium 2), Sun has a W2100z (Opteron).
Ah well, I suppose we can get used to it.

#3 (**permalink**) 01-16-2008, 12:56 PM

On Tue, 27 Jul 2004, Paul Eggert wrote:

> It almost sounds like Sun is taking a page out of HP's naming
> conventions. HP has a zx2000 (Itanium 2), Sun has a W2100z (Opteron).
> Ah well, I suppose we can get used to it.

Yep; such notation isn't new: no points for guessing which year
Sinclair's ZX81 came out (or its predecesor, the ZX80).

--
Rich Teer, SCNA, SCSA

President,
Rite Online Inc.

Voice: +1 (250) 979-1638
URL: http://www.rite-online.net

#4 (**permalink**) 01-16-2008, 12:56 PM

"Bronco Nagurski" <bronco_nagurski@hotmail.com> wrote:
> When will the US-IV processor start appearing in workstations like
> Blade 2500, etc.?
>
> Is the US-IV pin compatible with the US-IIIi (I believe it is
> with the US-III) and will one be able to swap a US-IV CPU into a
> Sun Fire V250 (US-IIIi)?
>
> The naming convention for these products is horrible (US-III, IIIi,
> and now these Opteron machines with the w's and z's, 20 vs. 200)
> and doesn't get better ...

Hi,

You will never see a US-IV chip in a US-IIIi system.

AFAIK the US-IV is not 100% pin compatible with the US-III. Also the US-III
chip is not pin compatible with the US-IIIi. In addition the design is
different.

So putting a US-IV chip into a Blade 2500 or any other system would require
a totally new mobo.

HTH,

Axel Neumann

#5 (**permalink**) 01-16-2008, 12:57 PM

In article <2mq8n5Fou43oU1@uni-berlin.de>, Axel Neumann wrote:

>You will never see a US-IV chip in a US-IIIi system.

>AFAIK the US-IV is not 100% pin compatible with the US-III. Also the US-III
>chip is not pin compatible with the US-IIIi. In addition the design is
>different.

>So putting a US-IV chip into a Blade 2500 or any other system would require
>a totally new mobo.

In theory Sun could make the US-IV available in any system which currently
uses US-III (Sun Blade 2000, V480, V880 etc). Although it isn't pin
compatible with US-III the system bus architecture is the same and the
US-III systems have CPU boards which plug into the system bus. I'd
expect Sun to produce such boards, it just takes them a while to do as
they usually get the new CPUs into the larger (higher profit margin)
systems first.

--
Phillip Fayers School of Physics & Astronomy, Cardiff University (*).
[ (*) - the official trading name of the University of Wales, Cardiff. ]
P.Fayers@astro.cf.ac.uk http://www.astro.cf.ac.uk/pub/Phillip.Fayers/
Tel: +44 (0)29 2087 5282 Attribute these comments to me, not UWC.

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Workstations and US-IV