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Prescott vs Northwood

Rambotnic

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Hi, I just wanted to know if there is a p4 3.0 ghz with a northwood core and what are the main differences between northwood and prescott (Performance and temperature).
 

Jimmy 2004

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I don't know loads about CPUs, but I know that Prescott has got better performance as it has a larger L2 cache. As for temps I don't know, would have though they would both be similar. Prescott is newer than Northwood I think.
 

Rambotnic

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so theres no point for me to chane my cpu from prescott to northwood?
What kind of cpu should i get then, soc 478
 
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No point to change, keep the prescott. Are you getting a new CPU and board though? Cause you asked what socket.

-Dan
 

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no scotet 775 or lag slot but tha means buying a new mobo as well
 
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northwoods are slightly faster under 3.6ghz where their short piplines work very well, the presscott has many more pipelines which benefit it more around 3.6+ghz. The norhtwoods also have 512kb L2 cache while th Presscots have 1mb. Presscotts all have 64-bite extensions, on all 478 though those extensions are locked. On 775 the 500 series have 64 bit extensions locked as well. (the only proof that presscotts have EMT 64 bit are the 501 series processors which have 64 bit extensions unlocked) Also some presscots have a multi drop trick, in whichteh motherboard sends a signal to the processor tellign it it has insufficient voltage regualtion for the chip, so the chips multi drops to 14x. On socket 478 the 3.2e C0 stepping SL7B8 is the only presscot 3.2 to have this capability, the 3.4es also shoudl have this. Also northwoods and presscot have difffernet stepping, which just indentify the processor revisions. In order of worst to best for ocing: Northwood: C1, D1, M0 (rejected EE) Presscot: C0, D0, E0 . Also their is the irwindale core (600 series) which is just a presscott with 64 bit extensions unlocked and an extra 1mb L2 cache.

Northwoods seem to not be able to reach 4ghz as easy as prescotts, the highest northwood OC ive seen is 5.24ghz, the highest presscot ive seen is 7.3ghz. In general prescotts OC better. Also northwoods have a safe zone under 50c and prescots under 60c taken that prescotts do run hotter at the same clock speed as northwoods.

Northwoods also have a stock vcore around 1.5v prescots areound 1.38v. Also all prescotts are 90nm (thats 90nm between piplines) and northwoods 130nm, this is also a reason for better overclocking, we shoudl see even higher clocks with the P4 65nm chips come out.

Jsut a little of what ive seen over the years.
 

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Thanks for the info, i think ill stick to my prescott then....But ill start saving some money for the 600 series, and that means a new mobo and a pci-x card:(
 
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youg ot 865 and 875 chipset options liek teh as8, p5p800, and the dfi 875p-t, they are better ocers than 915 chipsets, and modded they can beat 925 chipsets.
 
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Steven B said:
In order of worst to best for ocing: Northwood: C1, D1, M0 (rejected EE) Presscot: C0, D0, E0 . Also their is the irwindale core (600 series) which is just a presscott with 64 bit extensions unlocked and an extra 1mb L2 cache.

from your post, worst to best, i presume you refered the "C0" as the worst for prescott? right? but i have a C0 rev prescott... i think my OC is quite good enough already though... :rolleyes:
 
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bim27142 said:
from your post, worst to best, i presume you refered the "C0" as the worst for prescott? right? but i have a C0 rev prescott... i think my OC is quite good enough already though... :rolleyes:
Generaly the c0s dont oc the best, but there are exceptions. I had a sl7b8 3.2e C0 and it went to 4.2, my sl7kc D0 3.2e did 4.1, and my 2 sl7e5 D0 later rev than sl7kc did 4.3 and 4.32. HTis was all on the same water cooling. Everychip Oces different, but ussually the later revisions oc better becuase the silicon is newer.
 
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Also note they stopped northwood production... and I dont think they make LGA northwoods do they?

Production stopped due to die size, old core, and it stopped scaling.. although I think 90nm would have kept netburst alive quite a bit longer.. (using the NW pipeline length+prescott enhancements)

But thats an entirely different topic :p
 
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Dippyskoodlez said:
Also note they stopped northwood production... and I dont think they make LGA northwoods do they?

Production stopped due to die size, old core, and it stopped scaling.. although I think 90nm would have kept netburst alive quite a bit longer.. (using the NW pipeline length+prescott enhancements)

But thats an entirely different topic :p

I thought they had some gallitan cored EE on 775, the gallitan is based off Northwood, presscott has netburt..
 
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Steven B said:
I thought they had some gallitan cored EE on 775, the gallitan is based off Northwood, presscott has netburt..

All Pentium 4's are Netburst CPU's
The Gallatin is a Xeon MP core based on the Northwood. I don't think Prescott production has stopped yet.
 
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Steven B said:
it hasnt, well the 2.8e has from what i can tell from intels reseller sheets.

xeons are a totally different ballpark :laugh:

and yeah, preshotts are still being made.
 
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