Is there much diff between 3ghz p4s?

  • Thread starter Thread starter Michael C
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M

Michael C

I'm going to buy a p4 3.0ghz off ebay. I've noticed there are a few
different versions, some with 512k cache and some with 1mb and some are
prescott. Is there much difference with the cache? Is it worth getting the
prescott version?

Thanks,
Michael
 
(message (Hello 'Michael)
(you :wrote :on '(Sun, 4 Feb 2007 20:51:05 +1100))
(

MC> I'm going to buy a p4 3.0ghz off ebay. I've noticed there are a few
MC> different versions, some with 512k cache and some with 1mb and some are
MC> prescott. Is there much difference with the cache? Is it worth getting
MC> the prescott version?

512k cache is northwood. northwood and prescott are roughly equivalent --
nortwood has smaller pipeline, but they've optimized stuff and increased
cache in prescott to make them equivalent.
btw, what price?

)
(With-best-regards '(Alex Mizrahi) :aka 'killer_storm)
"People who lust for the Feel of keys on their fingertips (c) Inity")
 
I'm going to buy a p4 3.0ghz off ebay. I've noticed there are a few
different versions, some with 512k cache and some with 1mb and some are
prescott. Is there much difference with the cache? Is it worth getting the
prescott version?

Thanks,
Michael
Click to expand...

Get the Northwood, the Prescotts longer pipes have some
penalties and were primarily to allow it to ramp up to
higher clockspeeds later. The main benefit to a Prescott
would be if you wanted to overclock it a lot, but it is a
very hot running CPU, higher thermal design power than
Northwood at stock speed and it's smaller die means higher
heat density too.
 
kony said:
Get the Northwood, the Prescotts longer pipes have some
penalties and were primarily to allow it to ramp up to
higher clockspeeds later. The main benefit to a Prescott
would be if you wanted to overclock it a lot, but it is a
very hot running CPU, higher thermal design power than
Northwood at stock speed and it's smaller die means higher
heat density too.
Click to expand...

Thanks, I will. Cooler is better in my case.
 
Alex Mizrahi said:
(message (Hello 'Michael)
(you :wrote :on '(Sun, 4 Feb 2007 20:51:05 +1100))
(

MC> I'm going to buy a p4 3.0ghz off ebay. I've noticed there are a few
MC> different versions, some with 512k cache and some with 1mb and some
are
MC> prescott. Is there much difference with the cache? Is it worth getting
MC> the prescott version?

512k cache is northwood. northwood and prescott are roughly equivalent --
nortwood has smaller pipeline, but they've optimized stuff and increased
cache in prescott to make them equivalent.
btw, what price?
Click to expand...

Looks like around $127 Australian.
 
Michael said:
Thanks, I will. Cooler is better in my case.
Click to expand...

Don't forget to check the motherboard CPU compatibility table,
as some of the older S478 motherboards are not "Prescott ready".
For those motherboards, if you plug in a Prescott, it won't POST.
The Prescott has at least one pin different than the Northwood,
and the processor can actually sense whether it is plugged into
a "Prescott Ready" motherboard. Unless the motherboard puts the
right signal on that pin, the processor won't run.

Paul
 
Paul said:
Don't forget to check the motherboard CPU compatibility table,
as some of the older S478 motherboards are not "Prescott ready".
For those motherboards, if you plug in a Prescott, it won't POST.
The Prescott has at least one pin different than the Northwood,
and the processor can actually sense whether it is plugged into
a "Prescott Ready" motherboard. Unless the motherboard puts the
right signal on that pin, the processor won't run.
Click to expand...

Thanks for the tip, I just did a check and it supports both but i've bought
a northwood 3.0ghz p4 for AU$130 based on kony's advice.
 
Not all motherboards can use ALL of the various 3.0 GHz P4's. You'd better
do some detailed research first.
 
DaveW said:
Not all motherboards can use ALL of the various 3.0 GHz P4's. You'd
better do some detailed research first.
Click to expand...

Thanks, I did all that. The CPU is in the board and working now. Doesn't
seem much difference from the 2.4 but I didn't buy it for speed, I needed
the CPU back to put in my other PC :-)

Michael
 
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