P4 2.8C vrs. P42.8E

[0JK0]

Hey,

I know u guys don't like Presscot chip because of the heat it produces, but after reading many reviews i have doubts if you guys are rigth. In many reviews including one here on anandtech.com theys say that Presscot is only few C hotter.
I also read that if you have the right cooling ( I repeat, right cooling) you can hit higher speeds with the preescot then with the Northwood!(I wonder if is it possible to get P42.8E over 3.5 on air?)

So let's say we got P4 2.8C and P42.8E both overclocked to 3.5 using ZALMAN CNPS7000A-Cu, would't Presscot be faster? Doesn't that extra 512kb of L2 ceche make bigger differance at higher speeds?

 

[Mik3y]

well, i'm an amd fan, but i also like intel. all i know is that at stock speeds, the 2.8C is faster. with the overclock, i dont really know which is faster, but i do know that encoding will benefit from the larger L2 cache compared to the 2.8C

 

[myocardia]

A Prescott will only be faster at media encoding. At everything else you can use a computer for, it will be between 200 and 400 mhz slower, overclocked or not (the speed difference depends mostly on who you ask, since nobody can seem to agree on just how much slower a Prescott is than a P4C). Intel isn't going to go broke if you wait for them to get the Prescott's heat and other issues ironed out, so buy yourself a P4C.

 

[Algere]

I thought the extra cache on the Prescott was supposed to compensate for the longer pipelines (20 versus 31) which should prove better @ higher clock speeds.

Anyways clock for clock at present stock speeds between the 2, the Northwood is faster in most benches. I will agree with Mik3y that the 2.8C OC'd in the 3.5 GHz area being faster than Prescott.

This is simialar to how the P3 was faster than early P4's until the P4's clockspeed ramped up.

 

[THUGSROOK]

what part of "Prescott sucks compared to a Northwood" dont you understand?

 

[Corporate Thug]

the temp issue with the prescott makes the northwood a better choice IMO

 

[ericgl]

Stupid me. I just bought a 2.8e to build a gaming machine, against my better judgement (and everyone's advise). I figure if I can't get the performance out of it I want, I'll relegate it to my HTPC.

 

[Mik3y]

Originally posted by: ericgl
Stupid me. I just bought a 2.8e to build a gaming machine, against my better judgement (and everyone's advise). I figure if I can't get the performance out of it I want, I'll relegate it to my HTPC.

no offense, but....HAHAHHAHAHAHAAH!!!! sorry, couldnt help but laugh. i wouldnt say that a 2.8e sucks. i prefer "its not AS good".

 

[jdogg707]

Originally posted by: Mik3y

Originally posted by: ericgl
Stupid me. I just bought a 2.8e to build a gaming machine, against my better judgement (and everyone's advise). I figure if I can't get the performance out of it I want, I'll relegate it to my HTPC.

no offense, but....HAHAHHAHAHAHAAH!!!! sorry, couldnt help but laugh. i wouldnt say that a 2.8e sucks. i prefer "its not AS good".

I wouldn't put it in a HTPC which you want to be quiet and run cool...you'll need a big heatsink and lots of airflow, which will require a bigger case. I would say sell/exchange.

 

[Optimummind]

Well, once applications begin to take advantage of the new instructions, the Prescott will outperform the Northwoods. It's inevitable.

After selling my old 2.4B and Ti-4200 to a buddy, I bought a 2.8E for $33. Now, it's OC'ed to 3.41GHZ and it's fast and smooth. At the moment, my temp is 26 C. At load, it gets as high as 34 C. But that's running Far Cry with 4xAA and 8xAF with all settings maxed out. Since I also have a waterblock on my GPU, some of the warmed water goes to the CPU block next.

If I don't OC my GPU, the CPU is cooled down even more.

Perhaps I got the newer stepping Prescott, I'm not sure. But I have no heat or stability issues.

 

[0JK0]

Well, do you guys also believe that Presscot is more overclockable ( after all it's a new chip and should have more headroom..and northwood almost have reached it's maximum..)? I read that some people have been able to hit 3.7 with P42.8E but i haven't heard of anyone doing the same with P42.8C..... Maybe the later steppings of Presscot will perform better (in performance as well as in heat issue..)

 

[Acanthus]

Originally posted by: 0JK0
Well, do you guys also believe that Presscot is more overclockable ( after all it's a new chip and should have more headroom..and northwood almost have reached it's maximum..)? I read that some people have been able to hit 3.7 with P42.8E but i haven't heard of anyone doing the same with P42.8C..... Maybe the later steppings of Prescott will perform better (in performance as well as in heat issue..)

With a nice heatsink like a MCX4000 or SA7 you can achieve 3.5ghz+ on most Prescotts. The main issue now is the power drain on the motherboards. I hear they are eating IC7s like mad because the caps overheat. (over 110C)

And yes the IPC gradually increases on the P4E with clockspeed. So at 3.5ghz+ they should be equal. (check out some 3.2C vs 3.2E reviews, its very close)

 

[ericgl]

Originally posted by: jdogg707

Originally posted by: Mik3y

Originally posted by: ericgl
Stupid me. I just bought a 2.8e to build a gaming machine, against my better judgement (and everyone's advise). I figure if I can't get the performance out of it I want, I'll relegate it to my HTPC.

no offense, but....HAHAHHAHAHAHAAH!!!! sorry, couldnt help but laugh. i wouldnt say that a 2.8e sucks. i prefer "its not AS good".

I wouldn't put it in a HTPC which you want to be quiet and run cool...you'll need a big heatsink and lots of airflow, which will require a bigger case. I would say sell/exchange.

Hmm, my HTPC is in a Sonata case and I figured a Zalman 7000 would be able to keep up with the Prescott at stock speeds. Am I figuring wrong?

 

[jdogg707]

Originally posted by: ericgl

Originally posted by: jdogg707

Originally posted by: Mik3y

Originally posted by: ericgl
Stupid me. I just bought a 2.8e to build a gaming machine, against my better judgement (and everyone's advise). I figure if I can't get the performance out of it I want, I'll relegate it to my HTPC.

no offense, but....HAHAHHAHAHAHAAH!!!! sorry, couldnt help but laugh. i wouldnt say that a 2.8e sucks. i prefer "its not AS good".

I wouldn't put it in a HTPC which you want to be quiet and run cool...you'll need a big heatsink and lots of airflow, which will require a bigger case. I would say sell/exchange.

Hmm, my HTPC is in a Sonata case and I figured a Zalman 7000 would be able to keep up with the Prescott at stock speeds. Am I figuring wrong?

It should, most people creating HTPC machines use the smaller cases, llike the Antec Minute, that's what I was thinking of. You can try it and see how it works!

 

[myocardia]

What you guys seem to be forgetting about HTPC's is the fact that they don't need much processor power. A 2.8ghz P4, even if it's the slower Prescott, is too much, so you could underclock it to around 2.0-2.2ghz, and it would run even cooler.

 

[cbrsurfr]

The Prescott totally blows. I'm sending my 2.8E back to Newegg tomorrow. This turd runs at least 15C hotter than my 2.8 Northwood. I have an all copper cooler, full tower, and plenty of fans. Idle this chip got in to the lower 60's. Full load was 74-80C. My Northwood runs a solid 59C under full load in the same PC. You know a chip runs hot when you can smell the heat it produces. And yes the HSF was mounted correctly. Lowering the clock to 2.4ghz netted me about a 2-3C drop in temps...

 

[Deleted member 4644]

How does this chip compare to an Athlon in terms of heat?

 

[Algere]

Originally posted by: Deleted member 4644
How does this chip compare to an Athlon in terms of heat?

It's hotter

 

[Mik3y]

Originally posted by: Deleted member 4644
How does this chip compare to an Athlon in terms of heat?

it sux, its hotter then britney spears!

 

[Soulkeeper]

i wish i could take the heatspreader off my prescott

my prescott runs like 52c idle and 64c+ after turning seti on for a few minutes
with 1.47v and 3.22ghz

it's been cooler in my house lately tho
in hot areas air cooling starts to not do well with these hot chips

i've seen 72c+ temps on this chip using 1.54v or so
i am using the sp-94 with a high power 80mm and 92mm tornado with AS

 

[smahoney]

I run a 2.8C at 260MHz FSB - Decent water cooling and temps in the 39-42 range under load. 3.64GHz without frying the motherboard or turning my computer room into an oven - couldn't do that with a Prescott.

 

[FelixDeCat]

Well Ive had several Presscotts now, but nothing, and I mean nothing, surpasses my 2.4C o/c'd to 3.3ghz @ 280fsb.

Other than that, I love Presscotss very much because they are so damn fast at encoding over the regular p4.

If they made a p4 2.4e that HAS hyperthreading that hit 280fsb I would own it in a heartbeat. :heart::heart::heart:

 

[hytek369]

Originally posted by: THUGSROOK
what part of "Prescott sucks compared to a Northwood" dont you understand?

i agree, prescott bites

 

[Margalus]

Originally posted by: FelixDeKat
Well Ive had several Presscotts now, but nothing, and I mean nothing, surpasses my 2.4C o/c'd to 3.3ghz @ 280fsb.

except maybe for my 3.2EE at stock speeds, or my 3.2EE at 3.7ghz. Or my 2.8E @ 3.6ghz.

 

[FelixDeCat]

Originally posted by: Margalus

Originally posted by: FelixDeKat

Well Ive had several Presscotts now, but nothing, and I mean nothing, surpasses my 2.4C o/c'd to 3.3ghz @ 280fsb.

except maybe for my 3.2EE at stock speeds, or my 3.2EE at 3.7ghz. Or my 2.8E @ 3.6ghz.

Well, yeah. If I had $100000000 Id own an EE too. ;0 But mine would be unlocked!