Why does XP pro run so much hotter on my xp/win 98 dual boot?

[tbalon]

I have it loaded and it seems to run fine on my ASUS A7V266. The one thing I have noticed is that the CPU temps on my Athlon 1700+ are running in the 65 to 70 C range with XP pro. When I run win 98 (dual boot) with the latest 4 in 1s I am back in the 40 to 50 C range.

 

[Buzzman151]

BLAH!!! What is your average CPU usage?? There's something definately something wrong there. What's your system specs?

 

[tbalon]

I am running:

Win XP PRO
Asus A7V266
256 mg pc2100 DDR (Viking I think)
AMD XP1700+ =1.466 ghz I am able to run this at 1.6 ghz 11x148 @1.8V (I believe default is 1.75V)
Coolermaster HSF for AMD xp 1700+
32 mb AGP TNT2 m64 video with latest drivers
onboard sound
us robotics 56k win modem
80 gig ATA100 WD 7200 rpm HD
Enermax 320W Dual fan PSU
generic ATX case
Cendyne 32x12x40 cdrw (lite-on)

 

[tbalon]

I havn't been doing much else but surfing and some lite cd burning lately...I use the asus probe for temp read outs. It seems to me I read somewhere that this particular board has a reputation for reading high in the temp department. It sure puts out the heat though.....

 

[Buzzman151]

what's your idle cpu usage??

 

[bevancoleman]

Try VCool, it isn't a idle htl generator but playes arround with the m'board chipset.

Worked fine on my Athlon 1Gz, droped the temp 10'C and it dosn't even to stay loaded as it's only seting a bit on the chipset

Unfortunaly youcan't d;load it off it's homepage, they seem to have wiped some of there site (like everything bar the menu).

 

[AA0]

my temps are fine on XP with my board, 50Cish. win98 was similar, you must have something set wrong, or the program is screwed up. Try another program, like motherboard monitor 5

 

[CoDerEd]

strange, i used to run it cooler on win XP/2000 compare to win98/ME.
btw/ what's you case temp , do you install a case fan (intake and out) ?

 

[BD231]

I hear Asus probe is horrible inacurate.

 

[ElusivePeon]

That model asus motherboard has a known temp reporting problem.

 

[tbalon]

Thanks guys, I have noticed on the win 98 side I am using the CPU cooling software that comes with asus probe, the one under the settings option. but under XP It does not give me that option, its just not there......

Buzzman, Where/ how do I check the Idle CPU usage?

I do have the standard 80 mm intake fan and I am using the dual fan PSU as output so I do think I have good airflow.

Asus probe reports the motherboard temp as 30 C under win 98 at idle. I will check it under XP and get back with you.

I will check with asus for more info on the temp problem, meanwhile, do you gus think it is ok to operate in the 60 to 70 C range since it is still under the 96 C that AMD says is max?

 

[FIFO]

Curiously enough I did something a couple of days ago that may answer your question and help to dispel fears for others.

I was getting tired of hearing the Delta 7200 RPM fan in my system, so I chose to put the stock coolermaster fan back on. I took the delta off while the system was still going because I was first intending to put the other fan right back on. Somewhere in between I decided to see how well the heatsink could deal with head all on its own.

The results were interesting to say the least.

Here is the build on my system:

Enlight Mid-tower case
Enermax 350w
EPoX 8KHA+
Duron 600 @ 858 (143 * 6)
Coolermaster DP5 6H-11 lapped down with 1500 girt
Arctic Silver 3 themal paste
256 MB Crucial PC2100
Asus V7100 pure


I have the WPCREDIT tweak that halts the CPU when idle, installed. The idle temp that I got with the delta was reported by mobo monitor as 19 celcius. When I ran idle with just the heat sink, the temp never went past 24 celcius.

My desire for dangerous things did not stop there. What I did next will shed a lot of light on this whole temperature comparison thing.

I started up an opengl test called particle fury. It runs a fairly intensive opengl loop that runs in a window so I can see the temp rise in another. I still have the fan off during this. It took a good 15 minutes but the temp eventually rose to 48 celcius and crashed the PC.

Now according to the AMD tech specs, the K7 series are supposed to run as hot as 90 C. Because ALL motherboards that are currently on the only use an under the CPU sensor, the reading that they are taking is nowheres close to accurate. What I did really illustrates that point. A sensible conclusion that can be made is that the actual core temperature for the processor was 90 C when it crashed. Some 40 C higher than what was displayed.

As an earlier post had indicated, the ASUS boards report temperatures "funny" (my words). There is absolutly no way to ever compare even identical model motherboards' temperature results as there are far too many opportunities for difference between the setups. Actual core voltage, air circulation, sensor placement, BIOS calibration, etc... can all have an impact on the final result.

Here are the things to remember:

- Never try to compare external sensors
- If you are running stable then you are fine. To be sure, run 3dmark for 24 hours straight. If you don't crash you are fine.
- If you are crazzy like me, try running with no fan to find out what the breaking point for your setup and monitoring software is. My CPU is still running like it should. The trick is that the second that you lock up, you shut the PC right off. The storage temperature is higher than the running temperature and so the CPU can easily deal with the excess temperature when it is off.

I hope this helps you.

Thanks,
Jason.

 

[tbalon]

Yes, in XP when the temp gets to 73 C XP blue screens and the CPU temp alarm goes off. Thats when I shut it down.

WHat is the best CPU cooling software and where can i get it?

 

[mgpaulus]

To see what your cpu is doing under XP Pro, right click on your task bar, and select Task Manager. The icon in the system tray will show you your collective system state, and you can click through the various task manager tabs to see what your system is doing.

As far as "cooling" software, also known as idling software, you shouldn't need it in XP, since XP is built upon an NT core, and NT has support with in it's kernel that supports the HLT instruction (At least, that's the theory....)

 

[tbalon]

ok,

Thank you again guys,

I see that my CPu usage under XP is 0 to 1% and I have loaded motherboard monitor 5 and it is showing me a temp of 68C that remains steady. My room temp is about 82F and my mobo temp/system temp is 32C.
I have been running sisofts sandra burn in wizzard running the CPU, multimedia, and memory benchmarks and it pushes the temp to 73C after about 5 min of continuous testing at 100% CPU usage. My mobo temp remains constant at 32C.

As soon as I switch back to win98 the temp starts droping from 70 to 48 at idle. Then after administering the same series of burn in tests it reached a temp of 68C.........

Looks like I might be in need of a better HSF to keep things cool.

 

[FIFO]

In that case I would suggest that you get the Dr. Thermal v77L or N. They are the best designed HSF and I have personally installed a L and tested it and it is awsome. Very good price as well.

 

[DT4K]

That doesn't make any sense at all to me. You've got something screwy going on. The OS should have no effect on your temps. At least not on load temps.

Unless your heatsink is not touching your core, or you have something screwed up with your voltages, there is no way you should have a temp difference of 40C between your system temp and cpu temp. I've got an XP 1700+ and it runs 16-18C higher than the system temps with the stock retail heatsink.

I think you are getting bad readings and I don't think you need a new heatsink. Maybe try an add-on temp probe or something to compare those temps.

 

[FIFO]

I agree on the wierd thing.

If anything, there should be a temp drop under XP/2000 not under Win9x.

Any MS OS based on the NT structure does idle down quite a bit and that should keep the temp down. Under 9x, the cpu is always at 100% usage, even if there is nothing going on.

I would check to see if there is some kind of process on the XP side that is running in the background. Personally, I would run 2000 instead of XP. It is basically a purer verison of XP. There is none of the "junk" that you get with XP that can be so annoying.

BTW what model of Coolermaster HSF are you using.

 

[bevancoleman]

Ahhh.. found the new page for VCool

http://vcool.naggel.com/

The feature I use in it which I've never seen in any CPU idle program is "Northbridge Bus Disconnect Bit" control. I don't use it for idle looping as the W2k idle loop works fine after the bit has been set.

The stable version only supports Via KT133, KX133(A), and AMD761 chipsets, but the beta version includes support for KT266 and a few SiS and ALi chipsets as well.

 

[tbalon]

Tried that Vcool software and it brings my idle temps back into the 44C range from 68C in XP.

Thanks bevancoleman!!!

 

[DT4K]

<< Tried that Vcool software and it brings my idle temps back into the 44C range from 68C in XP.

Thanks bevancoleman!!! >>



Something is not right here. How would software lower your temps? If you were already at a low cpu usage, it shouldn't matter.

 

[bevancoleman]

<<

<< Tried that Vcool software and it brings my idle temps back into the 44C range from 68C in XP.

Thanks bevancoleman!!! >>



Something is not right here. How would software lower your temps? If you were already at a low cpu usage, it shouldn't matter. >>



First, it dosn't generate an idle loop. It can but by defualt it dosn't and relies on the inbuilt idle (hlt) loop in the NT kernel. By default all this app does it set a bit in the chipset (not CPU).

The problem is that some chipsets ignore the hlt request and never tell the CPU to sleep, the CPU stayes at full power even though it isn't being used.

Basicaly it's Via chipsets being querky again.

Check out the VCool site for a more technical description. I beleive VCool is the only 'cooling' software than can set the bit, though WPCREDIT can also do it.

 

[DT4K]

If I understand what I read on the VCool site, it is really only helping keep the system cooler at idle.
Is that correct?
What I meant was that unless it has lowered his load temps (which doesn't seem possible), there is still something wrong with either his temp readings or his heatsink installation. There is no way the load temps should get that much higher than the idle temps. Most people don't go much higher than 50C even when overclocked and running something like Prime or Seti.

Maybe I'm just confused, but it still seems like something is wrong here.