Which Temps Are Right?

[Terminat.]

Okay, on my overclocked Athlon XP 2800+ Barton system (with a K7N2 Delta Series NForce2 motherboard,) I have an Aerogate II Fan Controller (http://www.coolermaster.com/index.p...rial=ALD-V02&other_title=+ALD-V02+Aerogate II.)

Having recently put on an Arctic Cooling Copper Silent heatsink (http://www.ebuyer.com/customer/prod...2hvd19wcm9kdWN0X292ZXJ2aWV3&product_uid=58513,) then I found that although the Aerogate gives the temps as 43C idle, 46C under load, the motherboard gives it as 50C idle, 59C under load.

Which is more reliable?

I have heard that motherboard sensors are unreliable, yet that sensor is directly under the processor, whereas the Aerogate temp sensor is just in one of the heatsink grills.

Which should be trusted?

 

[archilochus]

What is your System(case/mobo) and rooms ambient temp?

Arctic Cooling Copper Silent 2l (blue Light) (maximum Support XP3400)

Thermal Resistance: 0.18 °C / Watt

Source link: http://www.ebuyer.com/customer/prod...2hvd19wcm9kdWN0X292ZXJ2aWV3&product_uid=58513

To calculate what to expect for other CPUs, for every watt the CPU radiates, the heatsink will cool the core by the (C/W x watts) plus ambient temp. For example, at a fan inlet temp of 25 C, a C/W of 0.25 with a CPU radiating 50 watts means that the CPU temp will be 50 x 0.25 = 12.5 C over ambient temp, or 37.5 C.

Source link: http://www.overclockers.com/articles373/socketA.asp

 

[Terminat.]

Temps

The ambient temperature is around 22-25C - certainly no warmer than that.

 

[archilochus]

What is your case temp? (system)

 

[Terminat.]

Case Temps

The temperature inside the case is always between 33C-38C.

 

[DarkJester]

They can both be right. the aerogate is measuring the temp of your heatsink, your CPU can be 10C hotter than that.

(btw. your case temp seems very high, you should add some extra case fans)

 

[Terminat.]

No Fans

Presently I have no case fans - apart from a single pci cooler, designed to cool my overclocked MSI 9800 Pro. I used to have an Antec SmartFan with a variable temperature-sensitive system, but wanted to reduce the noise of my pc.

 

[johan851]

Then you should find yourself some Panaflo L1A's, or similar low speed 80mm fans. You can't hear them at all, and they'll at least get some air moving. No case airflow isn't a good idea.

 

[Terminat.]

No.

I don't use case fans in any of my pcs - when I first built this pc (my main computer) it had a really noisy case fan that seemed to do absolutely nothing, and since then I haven't used them. When I was using the Antec, they didn't seem to make any difference. I would look for an ultra-quiet case fan, if I thought it would be of any use.

 

[vsalt2]

Wow passive case cooling. I guess it's... ok if you're not overclocking.

 

[Terminat.]

Why?

Why only okay if not overclocking? My pc's Barton 2800+ is overclocked to 2.19Ghz (3200+ Barton) and it's fine. The 9800 Pro is overclocked to 417/370Mhz and that's fine too (although it does have a pci cooler.)

I've always found that having a case fan makes absolutely no difference and is just there for peace-of-mind.

 

[Sevin7]

Where did you put them temp probe from the fsc? That one has big ones, you need a thin one that goes inbetween the pins of the proceesor and goes underneath it, thats the most accurate reading. Buy a thermaltake Smart case fan, it comes with it.

 

[vsalt2]

Terminat: whatever works best for you my friend I just usually have high case temps and believe in fans lol

 

[archilochus]

Your case fan was noisy because you prob. haven't removed the fan grids yet..

Currently my system temp is 26°C
Room temp..22°C
CPU/ Folding/ 50% usage...37°C

I use 92mm case fans w/grids removed and wiring/cables out of air paths...

The air temp going INTO the heatsink or radiator fan is the floor - all other temps you see are added onto this temp. If the air temp is 35 or 40C going into the fan, then there is NO WAY this heatsink will give you 40C at the CPU. The following table lays out what to expect for a 100 watt CPU:
As the table shows, the higher your case temp (and fan inlet temp), the hotter the CPU temp. It's no wonder that many are finding fresh air ducts to be a very effective solution at lowering CPU temps. Effective CPU cooling requires BOTH a good heatsink and airflow through the case.
To test out how much case temp impacts your system, open the side of the case, aim a house fan at the motherboard and record temps under stress. This is "best case" for airflow through the case.

http://www.overclockers.com/articles373/socketA.asp

 

[vsalt2]

I'm getting my case tonight, and will be removing all grids that are in front of or behind a fan. They are there because it's cheap and safe, I guess. Well so am I and they must go

 

[archilochus]

Example...




please don't quote my pix.

 

[vsalt2]

God I love looking at well circulated cases Thanks!

 

[archilochus]

God I love looking at well circulated cases Thanks!

Kewl, Here's a link to more...See the changes made, diff. versions of my rigs transformation...
See pix in album...3 pages..

http://groups.msn.com/MOBYSHOME/_whatsnew.msnw