Prescott Idling Temp.

[weirdlookinguy]

This new board+cpu I got off craigslist, (Intel i915G chipset w/ Prescott P4 2.8Ghz, 151W CPU) has a Cooler Master heatsink on there, it's round with a copper core and aluminum fins all around, and a 80MM fan that seems to move a decent amount of air. I scraped off the old gunk thermal paste that used to be on there. It was a really thick layer and it was stuck on so bad, that it took thinner to properly remove it. Then I cleaned off the thinner residue with water and rubbing alcohol and spread an incredibly thin layer of Artic Silver 5 on there.

The CPU is idling at about ~47C, give or take two degrees depending on the ambient temp.

When doing CPU-heavy stuff that shoots both CPU threads to 100%, temps hit 62C.

Does this sound about right to you guys for a 151W Prescott?

[370forlife]

Re: Prescott Idling Temp.

With what sounds like a stock-style heatsink, ya thats about where it should be.

[bgavin]

Re: Prescott Idling Temp.

The correct way to apply AS5 paste is by using a droplet about the size of a cooked rice kernel.

Put the droplet in the center of the processor, and it will squish out correctly.
The paste and scrape method was used on AMD cores directly, which did not have the heat distributor present in the Intel processors.

PRIME95 is a freeware testing tool that exercises the snot out of your processor. It is a true torture test. This will run your temps up. Way up.

My notes don't show any processor with a TDP higher than 130w.
The P4 Prescott in 2.8 speed is 95w.
Am I missing something?

The thermal max for this processor is 69w, so you are awfully close to the edge.
Buy a premium cooler.
If you have the case space, I suggest the Thermalright AXP-140 downdraft.

[ratdude747]

Re: Prescott Idling Temp.

my presscot 3.0ghz seemes to run about 60 degrees on a bit of extra load

cooler

my case is that of a emachines t5026. board is ECS P4M800PRO M.

power supply delta 350w 20+4

is that normal. i know the case is shit but my good one has no front audio and is used form my p3 overclocking system

would a c2d help?

[Wizard]

Re: Prescott Idling Temp.

That heatsink is decent if room is well cooled. Helps big time if the base is totally copper and 3 heatpipes for that rating of Prescott at 3.0GHz.

C2D doesn't need much help with cooling. Retail intel heatsink that came with the C2D is sufficient. Some do have copper core, and many are all aluminum low profile heatsink, just 1 inch thick finned puck, (E5200 or below as I know for sure because I have two. E5200 and E2200).

I'm waiting for another 2 or 3 weeks before I throw in 220 bucks taxes included (locally) on the E8400 retail.

Even the slowest E2200 at 2.2GHz with 1MB is way OVER the P4 3.0 by miles, And still blew away P4 EE 955 at 3.4GHz literally that was sold over a grand while this E2200 retailed for 90, now around 70.

This is why I refuse to pay anything over 20 for ANY P4 CPU above 3.0GHz, or 50 to 60 for CPU and mainboard combined.

E5300 2.6GHz can be had for 90 or so retail box. A good basic P45 class can be had for 100-140 from Asus or Intel for socket 775 mainboards. I don't still trust anything else.

Cheers, Wizard

[KeriJane]

Re: Prescott Idling Temp.

Hi Ratdude

Yes, C2Duo CPUs run quite a bit cooler than a Prescott.

Actually, I think SOLDERING IRONS run cooler than Prescott CPUs!
Especially something like a 8xx Prescott.... take the world's hottest CPU and put TWO of them in the same package!

The 6xx Prescotts were the coolest-running of the bunch.

On a 630 Prescott, you can expect to see at least 60℃ under load except maybe with liquid cooling or some kind of motherboard-bending monster heatsink big enough to heat a large-ish bedroom.

Mostly, don't worry about it. The CPU will self-throttle to avoid meltdown and besides, they're practically worthless.

Have Fun,
Keri

PS. Great choice of heatsink BTW... it's both effective and lightweight. Plus it's angled down to blow at least a little air on the boards caps and power things..

[weirdlookinguy]

Re: Prescott Idling Temp.

Everest Home Edition is where I got the 151W figure from. Maybe I was wrong? It's the 775 version.

Also the southbridge, the one without a heatsink, is running so hot you can't hold your fingers on it for more than a few seconds. 5v line on the CPU is a 5.15v. I'm going to be putting a heatsink on it soon, but... Is this normal?

[Wizard]

Re: Prescott Idling Temp.

Everest is not what u use.

Use this linky, this is taken from chipmakers' specs for TDP watts and other specs, includes 386, 486, and later. AMD, IDT, Cyrix, Ti, Intel, IBM (keep in mind some of CPUs is truly IBM's design and is really GOOD), Rise, SGS-Thomson, Transmeta, VIA.

For other more details, jump to wiki via google. And to confirm what you got, you need to read the numbers on your CPU and look up on google.

http://users.erols.com/chare/elec.htm

Cheers, Wizard

[ratdude747]

Re: Prescott Idling Temp.

Hi Ratdude

Yes, C2Duo CPUs run quite a bit cooler than a Prescott.

Actually, I think SOLDERING IRONS run cooler than Prescott CPUs!
Especially something like a 8xx Prescott.... take the world's hottest CPU and put TWO of them in the same package!

The 6xx Prescotts were the coolest-running of the bunch.

On a 630 Prescott, you can expect to see at least 60℃ under load except maybe with liquid cooling or some kind of motherboard-bending monster heatsink big enough to heat a large-ish bedroom.

Mostly, don't worry about it. The CPU will self-throttle to avoid meltdown and besides, they're practically worthless.

Have Fun,
Keri

PS. Great choice of heatsink BTW... it's both effective and lightweight. Plus it's angled down to blow at least a little air on the boards caps and power things..

fyi, you gave me that heatsink. remember, the keriprodutcions kit i got... i modded it so the fan is on the high side blowing the air through the low side into the high side. works great that way. maybe when c2d gets cheap enough i may get one.

[KeriJane]

Re: Prescott Idling Temp.

Hi Ratdude.

Well, Duh! But I thought that I'd give you the credit! (Shhh! take it and run!)


Seriously, Scythe makes some great products, and the Katana never got the credit it deserved. Too many people looked at it and said "Nah, too small". It actually works quite nicely and has a well-finished contact surface.

Other attempts at cooling Prescotts over here involved all kinds of junk, most of it too heavy. A Sony VAIO with a toasty 540 CPU came in with some bolted-in-place aluminum thing that was far too small resulting in the 92mm high-speed fan going to full in about 5 minutes. Combined with the PSU fan, it sounded like a jet plane trying to take off! (Sony? did you need a new System Integration Engineer? I'll do it!)

The Scythe Katana and the Arctic Cooling Freezer 7 seemed to work well without being too heavy. Some of the Zalmans would work OK but were very heavy. The great thing about the Katana is being able to change or re-position the fan to suit your taste.
Just don't mount it so the heatpipes point down. They should point front or rear or up, but not down. Pointing them up towards the PSU may give some improvement.

Nowdays, the whole excess heat problem is gone. Practically anything can cool a Core series CPU. A 35w Celeron 430 doesn't even need the fan plugged in sometimes.

C2D's appear to have gone UP slightly in price recently. There must be strong demand. Fortunately, the cheaper Celeron and Pentium series are based on the same design.

Before you go buying any CPU make sure you check ECS's site for the exact model board you have. Read the model number silkscreened on the board itself, I believe that one's a "P4M800PRO M (V1.0)"
They're pretty good with posting CPU compatibility and I'm pretty sure that board ONLY takes Netburst CPUs.
http://www.ecsusa.com/ECSWebSite/Sup...uID=69&LanID=9

Have Fun,
Keri

[ratdude747]

Re: Prescott Idling Temp.

so the board is doomed to be HOT.

[Agent24]

Re: Prescott Idling Temp.

I have a 3.0Ghz Prescott with stock cooling which is currently idling at 28 degrees

But then it's the old socket 478 type and only 89 Watts

[KeriJane]

Re: Prescott Idling Temp.

so the board is doomed to be HOT.

Well, yes, but Hotness is relative. Bear in mind that particular board and CPU ran great for years in an non-air conditioned apartment.

Also, it's got nice, new Polymer vCore caps.

Mostly, don't worry about it. Prescotts are pretty good at handling heat.
Just use a decent heatsink and a case with airflow through it.

Have Fun,
Keri

[c_hegge]

Re: Prescott Idling Temp.

My Old computer was an Athlon XP 2400+ with a deepcool octopus cooler. It would run at about 60*C Idle and 80*C under load! With the stock cooler, it would overheat and shut off when idling! The case had 6 fans (80mm). Much to my suprise, the three Nippon Chemi-Con KZG caps next to the heatsink are still alive!

[Agent24]

Re: Prescott Idling Temp.

My Athlon XP 2600+ ran fine on stock cooling, can't remember exactly but I doubt it ever went over 50 degrees (most of the time it was 35-45)

However my Duron 1300 before that would get to 58 degrees (however this was my fault, I bought the OEM version, it was my first build and it did not come with a cooler and pre-attached paste, and I thought that more was better...)

[dood]

Re: Prescott Idling Temp.

My Prescott 3.2ghz is currently idling at 59c. Under load I've seen close to 80c, and that's with AS5 and a copper core heatsink (AL fins)

The Prescott's internal temperature sensor will always read a few degrees higher than it is. I don't know that anyone determined quite how much higher. The fact remains, they are a hot-running proc.