C-orb/S-orb/Fop32-1/Taisol Tested With Diode versus Thermistor

[Mikewarrior2]

Hey Everybody(this time, including Thermaltake PR):

I just got some test results comparing some heatsinks via internal diode/external thermistor(directly behind cpu core). All clips were untouched(so the clip pressure is higher than necessary for intel chips). All tests done with Arctic silver, and done 3 times.

Tested on A C2@ 927/1.9V(approximately 34.5W)
Ambient Case temp of 25C

• Globalwin FOP- Internal Diode:39.5C; Thermistor:35C

• Taisol CEK733092- Internal Diode:42.5; Thermistor:37

• Thermaltake Super-Orb- Internal Diode:44; Thermistor:35C

• Thermaltake Chrome-Orb- Internal Diode:48.5; Thermistor: 39C

The orbs(both of them) exhibit the same type of behavior I have suspected. Something with either airflow or design causes thermistor readings to be drastically lower in comparison with internal core temps(diode readings) than do other heatsinks. For example, the FOP32-1 has a difference of 4.5C going from internal diode to thermistor, whereas the Super-orb has a difference of 9C.

From more testing, it seems as though the thermaltake ratings on thermaltake's website are not too far off actual readings. Transplanting these readings into a t-bird 1.1ghz/1.85V(~65W), you would get core temps ofwith a 30C ambient case temp)

Fop: 57.3C
Cek: 63.15C
S-orb: 66.4C
C-orb: 75.27C

The S-orb would appear to be a suitable, but not great heatsink. The C-orb has its uses, but below 900mhz. past that and you're running into cpu core temp "red-zone" with AMD chips.

The Importance of this test, is, to again show why socket-thermistor tests are inaccurate, compressed, and un-relative.

Charts and Such of These Tests

Mike

 

[Sunny129]

wow! thanks for all the temperature benchmarking and info...i'm thinking about getting better cooling for my P3 700e which is currently being cooled by Gorb. i'm assuming the Taisol, GlobalWin, and Alpha (all of which i'm pretty sure will fit on my CUSL2, but correct me if i'm wrong) are all going to be louder than my Gorb, correct?

also, if i were to keep the Gorb, is there a quieter fan i can purchase to replace the one it came with?

 

[Mikewarrior2]

Well, for p3s the orbs are okay. They don't push the limits like t-birds/durons do.

Well, a cek733092 will perform better, but i'm not sure if the noise is lower than the g-orb. I think its on par to a bit lower than hte c-orb noise level.

Of course, if you get the taisol CGK742(which should fit the CUSL2) with the 10mm delta fan, it should be fairly quiet, as well.


Mike

 

[Mikewarrior2]

Enough editing of the above post...

I'm not sure if you can change the orb fans. If you want, you could try to put the fan on a 12/7V switch. You could turn it down to 7V to reduce noise, the 12V when playing games, etc. I'm not sure what kind of performance drop you'll get, though.


Mike

 

[BLoop]

Mikewarrior - Your I. and II. links are broken.

Just thought I'd let you know.

 

[Mikewarrior2]

Doh, I thought I responded earlier... Either way, the Links are fixed.

Also, TTT so a certain, very ignorant Thermaltake PR person can see some "real" results for C-orb/S-orbs.


Mike

 

[clumsum]

Thanks for the test results, ................. what you have been saying all along is beginning to sink in to my thick skull ...........!

 

[Mikewarrior2]

The shock to myself in this test was the huge discrepancy between socket-thermistor and diode tests on the orbs. I always knew the results were compressed, and that the orbs were mere "susceptable" to these problems, but I didn't know they could be as misleading as these were(ie S-orb socket-thermistor is better than a taisol, but with internal diode, the taisol is better).


Mike

 

[Sunny129]

well i just got back to school from christmas break, and unlike my home which is like an igloo, my apartment at school is @ about 75F, which is a good 2-3C warmer than my home. this is causing my mobo temp to rise 2-3C and my CPU temp to rise 4-5C. so now my idle is around 34-35C, and my full load gets up to 41C. with my web browsers open i average about 38C. this is too hot IMO...at least i would prefer that my system were a bit cooler. i am trying to find a better fan for my Gorb b4 i go out and but a taisol, globalwin, or alpha. any suggestions? i think the Gorb uses a 10mm fan.

 

[tonyou]

Hey Mike, care to do another review for us with the Alpha included? I want to know once and for all how these heatsinks compare relative to each other.

Tony

 

[Mikewarrior2]

i think the gorb fan is a 60mm fan, not sure how you'd go about replacing it, though.

Tonyou,

Will do as soon as possible.



Mike

 

[Sunny129]

oops, typo. i didnt realize i put 10mm. that would be a very small fan. i meant 60mm.