Question on P4 2.8GHz CPU - A, B, C or E grade?

Hi,

Can anyone guide me to find information on the meaning behind these
alphabets, 2.8A, 2.8B, 2.8C and 2.8E? I could not find it in the Intel web
site.
If 'E' represents the latest/ bug fixed version and 1000KB cache, why is
2.8C (512KB cache) CPU be the most expensive among all in the shops?


Regards,
SY Teo

SY Teo wrote:

Can anyone guide me to find information on the meaning
behind these alphabets, 2.8A, 2.8B, 2.8C and 2.8E?

As far as I can tell, and I may very well be wrong:

Pentium 4 2.8A = Prescott + FSB533 + no HT
Pentium 4 2.8B = Northwood + FSB533
Pentium 4 2.8C = Northwood + FSB800
Pentium 4 2.8E = Prescott + FSB800

Grumble

The 2.8E runs VERY hot, and not all systems can accomodate it.

--
DaveW



"SY Teo" wrote in message
...
Hi,

Can anyone guide me to find information on the meaning behind these
alphabets, 2.8A, 2.8B, 2.8C and 2.8E? I could not find it in the Intel
web
site.
If 'E' represents the latest/ bug fixed version and 1000KB cache, why is
2.8C (512KB cache) CPU be the most expensive among all in the shops?


Regards,
SY Teo

And in general, 2.8E runs (a bit) slower than 2.8C on
nowadays software. The larger cache (1MB) on 2.8E can't
compensate the longer 31-stage pipeline when dependency
stalls the pipeline, and the L1/L2 cache latency is larger
on 2.8E.

So, the market price shows, 2.8C (among variants) is the
preferred product!

Stephen Wong @ Hong Kong

On Thu, 22 Apr 2004, DaveW wrote:

The 2.8E runs VERY hot, and not all systems can accomodate it.

--
DaveW



"SY Teo" wrote in message
...
Hi,

Can anyone guide me to find information on the meaning behind these
alphabets, 2.8A, 2.8B, 2.8C and 2.8E? I could not find it in the Intel
web
site.
If 'E' represents the latest/ bug fixed version and 1000KB cache, why is
2.8C (512KB cache) CPU be the most expensive among all in the shops?


Regards,
SY Teo