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Why is AS5 considered sub-par now days? - Page 9

post #81 of 87
I use gc-extreme over AS5 because gc is non-conductive cools slightly better comes in a bigger syringe
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post #82 of 87
AS5 is still great tim, yes there are a couple lately came out that have proven 1 or 2c better, and as far as the talk about conductivity, well, sorry but just be more carefull-you know it is a computer not a slab of wood your spredding glue on. Also i have been emailed by Artic silver more than once about cureing times, becuz if any of you have notice that lap your cpu and heatsink/cold plate, not realy any difference in temps from begging to end, Artic Silver Techs have told me twice, by doing a good lap job you pretty much can for get about the cure in time or it is shorten by way over half the time.

Becuz, 1 your useing next to none-2 heat transfer is way quicker through the tim becuz of the GOOD lap job, ya i have been a AS5 user for manny years, maybe one day i might just use a new product, but there is NO reason to say AS5 isnt worth it. I would say how ever-get whats cheaper at the time your buying, between the good tim,s that are out there. About the only real difference any way.
    
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post #83 of 87
Quote:
Originally Posted by Chunky_Chimp View Post
I would not trust their thermal results as they use an artificial heat source and not an actual loaded CPU; this also does not allow them to demonstrate the difference between lapped and unlapped results, provided they conducted such testing in the first place.

Lapping a CPU is not for everybody. Not everybody is willing to do it, for various reasons. Especially if you want to sell it later.

And let's face it, in 2011, a thermal paste that has the following curing requirements, is simply not practical. Given the myriad of options available that have no curing time, AS5 should be at the bottom of the list.

Quote:
After this article was first published, there was an immediate backlash from some of the manufacturers listed in this review. The primary argument was the lack of cure time. Here is the Arctic Silver 5 recommended cure time instruction from the manufacturers web site:

Due to the unique shape and sizes of the particles in Arctic Silver 5's conductive matrix, it will take a up to 200 hours and several thermal cycles to achieve maximum particle to particle thermal conduction and for the heatsink to CPU interface to reach maximum conductivity. (This period will be longer in a system without a fan on the heatsink or with a low speed fan on the heatsink.) On systems measuring actual internal core temperatures via the CPU's internal diode, the measured temperature will often drop 2C to 5C over this "break-in" period. This break-in will occur during the normal use of the computer as long as the computer is turned off from time to time and the interface is allowed to cool to room temperature. Once the break-in is complete, the computer can be left on if desired.

So by my estimation of this statement it would take almost a year of normal use to properly cure the AC5 compound, or almost nine days of continuous power cycles to meet their recommendation. Benchmark Reviews feels that this is a characteristically unreasonable requirement for any TIM product, and we do not support it. We want products that perform without the burden of sacrifice on our time, especially with some many competing products offering performance without this extra requirement.
From Benchmark Reviews 33-Way Thermal Interface Material Comparison article
Edited by tpi2007 - 5/15/11 at 5:47pm
 
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post #84 of 87
lol-ok-i was only saying that the final results of the as5 are just as good, and in no way was saying lapping is the way to go-only was giveing facts. Ok-and your saying it will take a year for it to cure-lol WOW my temps are going to rock in another 10 months-that would make as5 the best there is if we even think the way you just stated your post. So also i guess by your guestamation, anything that may take a bit of time or pose us to only consider the newest product is worth it, excuse me!! There are absulutely no products out there that fit every need-or every person and there is in no way any absulute just becuz one or two people or places say so, some times i cant beleive how so manny have tunnle vision in this world. Come on we are talking about TIM.
    
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post #85 of 87
Quote:
Originally Posted by fishhawk View Post
lol-ok-i was only saying that the final results of the as5 are just as good, and in no way was saying lapping is the way to go-only was giveing facts. Ok-and your saying it will take a year for it to cure-lol WOW my temps are going to rock in another 10 months-that would make as5 the best there is if we even think the way you just stated your post. So also i guess by your guestamation, anything that may take a bit of time or pose us to only consider the newest product is worth it, excuse me!! There are absulutely no products out there that fit every need-or every person and there is in no way any absulute just becuz one or two people or places say so, some times i cant beleive how so manny have tunnle vision in this world. Come on we are talking about TIM.
1. I wasn't even talking to you;

2. I was quoting an article. Did you read that ? It wasn't me saying that; I do not necessarily agree with everything said in the article. That whole year does indeed seem exaggerated, but different usage patterns might apply here - if the PC is not turned off often (some people leave the PC on for folding or downloading files, etc), it might take way longer to cure. Arctic says it themselves - it can take up to 400+ hours (page 8, number 7).

3. See what happened when they tested an Arctic Silver 5 rebadged as Antec, which incidentally didn't have the cure recommendation:

Quote:
EDITORS NOTE: As a result of Antec's concern for the rating or their product, the following information has been added to this article for clarification: The Antec 77063 Formula 5 Silver Grease used in our tests is identical to Arctic Silver 5 thermal paste. As of 26 June 2009, Antec's application instructions do not recommend or require any amount of material curing time, despite Arctic Silver recommending 200-hours of thermal cycling to allow a proper cure of their AC5 compound. Because no curing time is suggested by Antec, Benchmark Reviews has tested the Formula 5 thermal paste after one-hour of thermal-cycling was complete, which is how all materials with no curing time specified have been tested. Benchmark Reviews recognizes that this product (and other AC5-clone products) will perform slightly better over time, however the product instructions supplied by Antec are different than those of the original formula manufacturer (Arctic Silver) and was tested based on specific manufacturer recommendations.
As a result, it got a performance grade C instead of A+ like the AS5.

Taken from Benchmark Reviews's 80-way Thermal Interface Material Performance Test review.


Besides, as has been stated, the AS5 needs to be reapplied every 8 -12 months because it starts losing efficiency, unlike competing products.
Edited by tpi2007 - 5/17/11 at 5:24pm
 
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post #86 of 87
Quote:
Originally Posted by twich12 View Post
in my experience AS5>mx2, mx3, mx4 (keep in mind we are talking a couple degress C at most) and its probably about the same as IC7
All I know is with MX-3, I was able to OC my G0 Q6600 to 3.3GHz on 1.38 vCore and 57c max temps w/small FFTs. Using a Thermalright TRUE Black w/dual coolermaster R4's in push/pull. AS5, with the same setup, gave me a stable overclock yes, but at 1.43 vCore and almost 70c max temps.

I should also speak up for the Noctua NT-H1 Pro Grade compound as well. Came with my NH-D14 and I'm rockin' a 5GHz overclock at 1.41 vCore and no higher than 62c.
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post #87 of 87
Quote:
Originally Posted by ezveedub View Post
Capacitive=Conductive. I could care less what you and everyone says, if you can't smear it all over the PCB, then it needs special care during installation. If you don't believe that, then stick with it. No one will use it, simple as that.
This really ticks me off. This kind of response is the kind of lack of thought that causes problems. (Much Exactly like Fox News.)

Capacitance is the ability of a body to hold an electrical charge.

(Electrical)Conductivity is a material's ability to conduct an electric current

Therefore

Capacitance ≠ Conductivity

Capacitance is measured in farads.

Conductivity is the reciprocal of Resistivity and measured in Ohm Metres.

END OF STORY. Take an electronics class if you want to argue with me.

There are better TIM's out there, and maybe AS5 does conduct, but misinformed comments like these just kill me.
Edited by MediaRocker - 5/17/11 at 5:13am
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