YAHCT: Can't find it, what are safe ranges for a P4? Is 58 load too high?

[BrunoPuntzJones]

Yet another hot cpu thread Sorry I did a lot of searching but came up kinda short (and Anand's link isn't working in the FAQ). I can fine threads on other processors (mostly AMDs), and the ones I find on P4's aren't really answering my question.

Anyways...under Prime 95, case temp of 35, retail hsf (with AS2 instead of the tape) on an MSI 845 Ultra ARU, MBM reports about 42-43 idle, and as high as 58 load (53-55 for most parts). Running a 1.6A at 143 FSB (+.01 which should be 1.60, but MBM says I'm only putting out 1.55-1.57. see my other thread on voltages for more info).

58 too high? Do I need to get it lower to get to 150? If I jack it up to 1.65v am I gonna melt my p00ter (I know it'll throttle, but at what point does it kick in?).

I'm 50% sure I botched my AS2 job. I think I put it on a little think (damn IHS is huge, on Athlon's I can gauge how much I need, this was a first time with a P4).

However with Prime95 going for several hours (12 one night, 5 right now) there have been 0 problems. Been stable.

If there are no problems and there is enough overhead to go faster, then it won't bother me. But if it's too high I guess I'll be taking another shot at the thermal paste

 

[Nate420]

I seem to remember reading a post where someone was getting a P4 to throttle at ~58C. There is no reason for your P4 or anyone elses to be hitting 58C in the first place IMO. These things run cool with stock HSF, with the thermal tape even... 58C is way high if you ask me.

I'm gonna bet that MBM is reporting the temp incorrectly. I run my 1.6A @ 2.5Ghz 1.6V with the stock HSF W/AS3, and the highest temp I've seen was 45C after 10 hours of Prime95. Granted..I have great case cooling, but even when I run with only one case fan on I never see anything above 49C.

 

[WarCon]

What kind of case cooling do you have? You case temp is a little high. Try a little more ventilation and if you can lower your case temps you will equally lower your CPU temps. My case temps are just a few C over ambient at idle and that is with my watercooler dumping its heat into the case. I run two 80's exhausting (one is a blowhole and the other one in the back). I cut off the section that was suppose to be a grill for the fan so it wasn't impeding air flow. I also have the 120 that is on my radiator drawing air through my front. I added alot of extra holes so it could draw more efficiently through a filter. At full load my case temps hit 29C. My room temp is 20-21C typically.

If that is your retail heatsink, then I think your install is ok. You just need cooler air for the heatsink to work with. If your going whole hog, you could get one of those AVC heatsinks when you order some fans........

Also to ease your mind, you should reinstall your heatsink with less thermal compound. It might make a little difference.

 

[BrunoPuntzJones]

Coolin ain't my problem

I ran an athlon xp1800@145fsb (+.075) at 32 case 36 idle/40 load.
120/92 intakes
80/80/80/pci exhaust (one 80 is the psu)

Guess I'll be doing a reapplication of AS2 later then

Will do a very very thin layer of it.

Right now at idle I'm doing 33 case 42 cpu.

 

[WarCon]

Do your bios temps jive with what MBM is reading?

 

[BrunoPuntzJones]

<< Do your bios temps jive with what MBM is reading? >>

Yup was just coming back to post that. I have no reason to think MBM is inaccurate.

 

[WarCon]

Have you reached in there and touched the heatsink while its at 58C? Does it feel hot? My friends 1.6A is at 50C at full load and it feels really warm to the touch. His problem is lack of ventilation though and he doesn't want to mod this case (he wants to buy one of those Noblesse blue cases) because he wants to sell it. He is only running at 1.55vcore @ 133fsb because I didn't think running over 50C was wise for him.

 

[BrunoPuntzJones]

Yup, pretty hot around it. Haven't touched it at 58 yet though. I'm taking it down right now and doing another as2 application. Just hope I don't run outta the stuff...

 

[BrunoPuntzJones]

Aight back up, certain I did the AS2 right this time.
Case 29
CPU 39-40 Idle

Grrrr.
That's at 1.6@100fsb

Will fire up Prime here in a sec

Edit: 48 load :|

Edit 2: Now I've seen 50 :|

 

[Duvie]

Bruno....

I got high readings on the MSI board as well...61c high for 1.65v 1.8@2.4ghz with prime95....I was only using thermal pad and retail hsf....

I went to asus and used AS2 and 3900rpm avc fan and I g0t 51c max with my 1.8@2.5ghz and 1.775v...at 2.4ghz and 1.65v I would get 47c max...at 2.2ghz and 1.55v I never go above 45c max...cpu idles at 36-38 at all levels...

 

[BrunoPuntzJones]

Duvie, I've already fired off a PM to John, but maybe you can help also. Didn't want to make another thread.

Do you know of any P4 boards that are the following (other than the MSI and Gigabyte)
i845
RAID 0
Great at oc'ing (preferably with a pci/agp lock)

 

[Jwyatt]

I think its the MB. The bios isnt reporting it right. Mine is running low 60's under full load!!

Yep its high, but havnt seen any lockups or such. Im running at 160fsb with a 1.6a. The MSI board isnt a very good board IMO. Im going to try the gigabyte GA-8IRXP I think. Unless someone has reasons to stay away from em.

 

[BrunoPuntzJones]

POS is going back to newegg. Have a P4B266-C and a Promise Fasttrack TX2000 RAID on order from Mwave.

 

[Nate420]

Good choice with the P4B266

 

[SteelCityFan]

I actually just got an email reply from Intel asking them the same question.

They said 67C is the max temp for the P4 Northwoods.

I don't know how some people are getting such cool CPU's with the stock HSF and thermal pad... mine has a idle of about 42-45C and load at as high as 57.5 while running prime 95 for about 10 minutes. AT STOCK 1.8 SPEED ... which is why I emailed Intel.

With the room around 72 degrees, I have seen my System temp as reported by the Bios (Abit TH7-II) and Windbond at 38-39C.. I don't know what is up with that. I have the Antec 635 case with the dual fan PS, 1 rear exhaust, and a front intake added. The RAM on my stock speed Radeon 8500 Retail is pretty hot, but everything else including the RDRAM is cool to the touch. I don't know where the heat is coming from. I am going to add a fan to the 2nd front intake location tonight.

My heatsink is barely warm to the touch, so I assume the thermal tape is failing me. I am going to use some AS2 on it, but many have reported much lower with just the tape.

I have had it to 2.0 with no large change in temp (only a couple degrees).

 

[Sachmho]

at what temps for the cpu should i start to get worried?

 

[anime]

my question too all these temp question--Can anyone even tell me if these temp readings from the chip is even accurate?
We all know for amd--it's not accurate--but how about for intel?

 

[BrunoPuntzJones]

<< my question too all these temp question--Can anyone even tell me if these temp readings from the chip is even accurate?
We all know for amd--it's not accurate--but how about for intel? >>

IIRC, the Intel one is integrated into the chip. Far more accurate than the AMD (which are usually mounted mobo under the chip). It should be the true temp. The problem lies in some boards not reporting them right. MSI had problems with the last bios (and apparently I got a botched board?). Asus also had problems I think.

 

[anime]

hmm how about sis 645 chipset? i have epox 4sda+ using sis chipset--anyone can tell me if theirs are accurate?

thank you

 

[WarCon]

The way I read it on Arctic Silvers site (the article about calibrating the internal diode) is that the displayed temp may not be accurate, but the change in temp is. That article shows you how to calibrate the diode using low speed temp readings and high speed temp readings (I would assume vcore should be kept the same for both so your not introducing additional variables, but I don't know for sure) to find out by how much to calibrate it + / -.

Here is a link.............Diode Calibration

 

[BrunoPuntzJones]

Cool link Warcon. I'll keep that bookmarked for the Asus when it comes in

I just don't like these low voltage readings, that's what's bugging me the most. Have seen as low as 1.36v at default :Q

 

[WarCon]

Thats too low, I agree. How your new board treats you better......