p4 2.8 with bd7-ii it should work, shouldn't it?

Richard Hopkins wrote:
 > "Andy B" <coastalrocket.TakeThisOut@yahoo.co.uk> wrote in message
 > news:f1523bf.0503302333.271dd517@posting.google.com...
  > > bought the following on ebay to work with my bd7-ii
  > > P4 2.8 GHZ 1 MB HUGE L2 CACHE/ 533 FSB,
  > >
  > > when i power up the fan kicks up and then immediately stops. about
  > > half a second of 'whuur' is all i get. I've got two machines, one
is
  > > 300w power, 2gb, the other is 400w with 1.25gb. Both suffered
  > > the same experience.
 >
 > Are both systems BD7II's?
 >
  > > but i've read a few accounts on here of success with p4s up to
3ghz.
 >
 > The speed itself isn't an issue. Northwood core CPU's are no problem
at all
 > for the BD7II. However, your new processor is a Prescott part, and
they are
 > not properly supported by your motherboard.
 >

Shoot. I thought prescott chips were always described with a 'E' on the
end, eg. 2.8E etc. But more i learn
[http://cquirke.mvps.org/sp2intel.htm], all prescotts have L2 1M cache
and other p4s have 512. is this the difference?

oh well, back on ebay i guess.

I grabbed this from the intel site
sSpec Number
SL7K9
Processor Frequency
2.80A GHz CPUID String
0f34h
Package Type
478 pin PPGA Core Voltage
1.25V - 1.40V
Bus Speed
533 MHz Thermal Guideline
89.0W
Core Stepping
D0 Thermal Spec
69.1°C
L2 Cache Size
1 MB Manufacturing Technology
90 nm
L2 Cache Speed
2.80 GHz Bus/Core Ratio
21
Spec Update
<a style='text-decoration: underline;' href="http://developer.intel.com/design/Pentium4/documentation.htm" target="_blank">http://developer.intel.com/design/Pentium4/documentation.htm</a>
Product Order Codes

Box Order Code
BX80546PE2800E
OEM Order Code
B80546PE0721M



  > > Am i missing the mark with something.
 >
 > See above!
 >
  > > At the moment i have to assume the cpu is working as seller
suggested
  > > but i'll try to get it tested elsewhere soon.
 >
 > Secondhand CPU's are always a potential problem area. You really need
to
 > drop it in a board with full Prescott support before making too many
 > assumptions in this area.
 > --
 >
 >
 > Richard Hopkins
 > Cardiff, Wales, United Kingdom
 > (replace nospam with pipex in reply address)
 >
<font color=purple> > The UK's leading technology reseller <a style='text-decoration: underline;' href="http://www.dabs.com</font" target="_blank">www.dabs.com</font</a>><!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: p4 2.8 with bd7-ii it should work, shouldn't it? 

"digger440uk" wrote in message...
 > Shoot. I thought prescott chips were always described with a 'E' on
 > the end,

Nope. Unfortunately Intel aren't anywhere near that consistent.

 > But more i learn all prescotts have L2 1M cache and other p4s
 > have 512.

Even that isn't the complete answer nowadays. The 600 series Prescotts have
2MB of L2 cache.

 > is this the difference?

The fundamental difference is that Prescott processors are built on the 90
nanometre manufacturing process. Northwood is 130 micron. In practice
though, the Prescotts do have the extra cache, yes.

To be honest, if you're looking for a new processor for your board, you're
better off with a Northwood anyway. They perform significantly better clock
for clock, and have much lower power consumption and heat dissipation.

 > I grabbed this from the intel site
 > sSpec Number SL7K9
 > Manufacturing Technology 90 nm

The 90nm manufacturing tech is the giveaway.
--


Richard Hopkins
Cardiff, Wales, United Kingdom
(replace nospam with pipex in reply address)

The UK's leading technology reseller <a style='text-decoration: underline;' href="http://www.dabs.com" target="_blank">www.dabs.com</a><!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: p4 2.8 with bd7-ii it should work, shouldn't it? 

Thanks Richard,
You've been a great help to me.
 >> Stay informed about: p4 2.8 with bd7-ii it should work, shouldn't it?