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used Artic II, but only see 1C improvement over regular toothpaste =P

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Chicharon1

Registered
Joined
Feb 25, 2001
i just bought n applied arctic silvr II from a store (i never thought i would find it here =P ). i cleaned my CPU n FOP38 n applied arctic silver using a card n ensured none of my human cells end up in d silver. After booting up, i only got 1C improvement over regular grease.. what gives? did i waste my USD10 for just 1C improvement? =( any feedbacks pls...
 

TT120

Senior Member
Joined
Mar 1, 2001
Location
Sacramento, CA.
Chicharon1 (Apr 09, 2001 07:35 p.m.):
i just bought n applied arctic silvr II from a store (i never thought i would find it here =P ). i cleaned my CPU n FOP38 n applied arctic silver using a card n ensured none of my human cells end up in d silver. After booting up, i only got 1C improvement over regular grease.. what gives? did i waste my USD10 for just 1C improvement? =( any feedbacks pls...
I got about the same results and I see it this way, I paid the extra money for the peace of mind knowing I am using the best thermal goop out there and if I have any problems thats one thing I know is NOT the problem. Plus, 1 degree is 1 degree. It all adds up.
 
W

William

Guest
that 1 degree c is enough to allow you to lower your voltage or get a little higher in oc. I am always suprised at the people who get a 10c improvement in the stuff. Yours is more realistic.
 

dimmreaper

Senior Member
Joined
Dec 16, 2000
Location
home
Is the 1C difference at idle or at load? I imagin that if it is at idle, that you will see a few degrees difference at load.

I personally don't use AS, I'd rather spend the money I saved on a bigger/better heatsink. I use the AOS stuff, only $1.50 for a 10gram blister.
 

Oni

Oni-ni-Kanab;, Ninja Hippo eater Moderator
Joined
Apr 5, 2001
Location
St. Catharines, Ontario Canada
Chicharon1 (Apr 09, 2001 07:35 p.m.):
i just bought n applied arctic silvr II from a store (i never thought i would find it here =P ). i cleaned my CPU n FOP38 n applied arctic silver using a card n ensured none of my human cells end up in d silver. After booting up, i only got 1C improvement over regular grease.. what gives? did i waste my USD10 for just 1C improvement? =( any feedbacks pls...

You used TOOTHPASTE!?
 

Nevin

Mad Scientist from Arctic Silver
Joined
Feb 27, 2001
Please keep in mind that if you are measuring CPU temperatures on an AMD processor using an external thermistor, either in the socket or placed next to the core, then your measurements are subject to compression and will not reflect the actual core temperature change effected by a change in the thermal resistance of the primary heat path. This temperature change compression is a natural phenomenon of secondary flow path when there is "both" heat flow and thermal resistance from chip to ceramic surface.

This is the normal/natural case and cannot be avoided.

Here at Overclockers.com, Joe has gone to great lengths to develop measurement techniques that will accurately reflect actual heatsink performance rather than relying on the motherboard's in-socket thermistor.

The following links detail the science and math behind the compression...

http://members.nbci.com/candjac/TtoVanalog.htm
http://mikewarrior.freeservers.com/problempage_4.html
http://www.arcticsilver.com/measurement1.htm

Not only are in-socket thermistors in a secondary heat path, they also only measure an average of the CPU rear temperature (minor contact with thermistor surface) and the temperature of the air in the socket (major contact with thermistor surface) which is itself an average of the CPU rear temperature and the motherboard temperature.

With both of these factors contributing to temperature change compression, the differences between different cooling solutions, be it heatsinks or thermal compounds is minimized. In most situations, this compression can be as severe as 4 to 1 so a 4 degree difference in actual core temperature is only measured as a 1 degree difference.

Then there is the problem of heatsink contamination when one compound is switched for another.

Isopropyl alcohol and acetone will not begin to remove all of the existing compound on a heatsink. The fibers on a cloth or paper towel are far too large to fit into the microscopic valleys that the thermal compound fills so once a compound is applied or a thermal pad is melted, some of that compound or pad will be on that heatsink forever. Any subsequent compounds will be --at least partially -- applied over the earlier thermal material.

Please see this link:

So if you have had compound A on the heatsink and you switch to compound B, you are not really comparing A to B, you are comparing A to a mixture of A and B. If B is better, you may see some improvement, but probably not as much as if you had put B on in the first place.

Heatsink engineers understand this. Several manufacturers of high-end heatsinks apply Arctic Silver to the mating surface of all the heatsinks they send out for review then wipe it off. They know that if the heatsink is tested later with a lesser compound, it will have a bit of an advantage because the AS will still be filling in most of the microscopic valleys.

Nevin House
Arctic Silver LLC
 

AzzKickerG1

Registered
Joined
Apr 5, 2001
thats good. I got a 4-5 degree difference. The guys that say they got 10+ degree difference probably didnt even set there HSF right the first time and then w hen they put the Silver II by some miracle they probably set it right hense the big difference. Realisticaly speaking you should get from 1-5 maybe a little more