http://www.amd.com/us-en/Processors/ProductInformation/0,,30_118_11120_11125,00.html
There is AMD's warranty details. It doesn't anything about using Arctic Silver. It fact it doesn't mention anything at all about thermal grease or paste.
Three (3) Year Processor In A Box Limited Warranty
AMD warrants that processors sold through the AMD Processor in a Box Program, which have a "qualifying" serial number, when properly installed and used, will be free from defects in material and workmanship and will substantially conform to AMD's publicly available specifications for a period of three (3) years after the date the AMD processor was purchased.
If the AMD processor which is the subject of this Limited Warranty fails during the warranty period for reasons covered by this Limited Warranty, AMD, at its sole option, will: (1) repair the AMD processor by means of hardware and/or software; (2) replace the AMD processor with another AMD processor of equal or greater performance, OR, (3) if AMD is unable to repair or replace the AMD processor, refund the then-current value of the AMD processor.
It said it all!
You need to pay attention to very precise legal language!
The warranty are written as always in general terms, and refer to misissue and abuse of all products. This covers always improper installation and application.
The warranty by nature DOESN'T specify any or all brands, uses a standard general warranty legal language and some reservations. The final decision on warranty issues is in hands of AMD (sole option) and not yours.
All Warranties in US are also suplemanted by a Federal Warranty Act known as Magnuson-Moss Warranty Act. (The Magnuson-Moss Warranty Act is the federal law that governs consumer product warranties.)
Do some research before posting wreckless statements like "USING ARCTIC SILVER WILL VOID YOUR AMD WARRANTY."
Cause it doesn't.
;-p
-mpjesse
Well I did and I also I dealt with AMD in person over the phone.
The warranty DOES not have to be specific, it falls in to misapplication, negligence and abuse!
Now when using Arctic Silver the warranty by using NOT approved by AMD product is void by AMD (not approved interface material), and unless Arctic Silver would provide the warranty under their product applications you are out of luck.
Non compliance with AMD installation manuals and recommendations which would be referred during warranty claims VOIDS the warranty.
The most common reason cited by AMD is that hardened surface of Arctic Silver might result in damage to processor when removing the processor by force, this includes also bent, or broken pins.
May I suggest that you call AMD technical support @ (408) 749-3060 and discuss with them the issue of warranty?
the installation "white papers" are available on AMD web site.
i.e
tech cocumentation
13. Inspect the thermal interface material on the bottom of the heatsink for scratches The heatsink has a thermal interface material pre-applied on the bottom. This material protected by a plastic cover. (See Figure 12.)
Do not use the thermal interface material if it has scratches or gaps. If replacement interface material is needed, contact AMD technical support for assistance at
http://ask.amd.com or (408) 749-3060.
In EMEA, please contact AMD technical
assistance at http://www.amd.com/support .
If a heatsink is removed for any reason, clean the processor and heatsink surface an AMD-approved thermal interface material before reinstalling the processor.
builders data
Caution: The processor will overheat and fail if the heatsink is not installed so that it sits parallel to the top of the processor, or if the heatsink touches any part of the socket itself. This may result in permanent damage to the processor.
Completing System Assembly
Follow the instructions for mounting the motherboard with processor into the case, as outlined in the case literature.
On the AMD website, there are general instructions on how to build a system. To review these instructions go to:
http://www.amd.com/products/cpg/athlon-duron/howtobuild/howtobuild.html
For system cooling guidelines (case characteristics to look for, airflow patterns, where cooling fans should be installed, etc.), go to:
http://www.amd.com/products/cpg/athlon-duron/pdf/cooling_guide.pdf
If You Need Help
For technical assistance with the installation of your new processor, or for technical questions about its operation, the E-mail addresses and technical support phone numbers can be found on our support website at the following URL:
http://www.amd.com/support/support.html
Returns
Whenever possible, please return both the failed processor and attached heatsink to your vender. Having both components allows the AMD engineers to more fully diagnose any problems.
I did and I was told over the phone by the MANAGER of AMD Technical Support prior to RMA that use of other than stock heat sink and fan as well as use on NOT APPROVED by AMD thermal interface materials (Shin Etsu MicroSi’s G765, Shin-Etsu MicroSi’s G-751 or better ) will VOID the warranty on processor, subject to AMD (sole option) discretion.
The reason I called was that after the failure of system, damage to heat sink, replacement of heat sink, I RMA CPU and knowing AMD policies I wanted to obtain or to purchase additional thermal grease (shin etsu G-765 or other as required by AMD) from AMD, otherwise not available locally.
Same applies to overclocking of processors which is covered under the warranty as "negligence or abuse" by the user.
The decision will be only AMD RMA department decision with no right to appeal, unless you are willing to sue on substantial evidence of "defects in material and workmanship" what is very unlikely.
You are only depending on AMD so called "Good Faith".
If you use CPU without a fan (even accidental) or fry CPU when overclocking AMD would NOT replace the CPU!
AMD also recommends that the installation be performed "ONLY" by the experts only, whatever it means.
Interface Materials
The interface material used between the heatsink and
processor is important. The purpose of this material is to fill any microscopic air gaps and ensure a thermally efficient path is established for heat to flow from the package into the heatsink.
There are several different types of thermally conductive
interface material in use today. The most common are grease, wax, thermal pads/tapes, and epoxy. While dry interfaces (pads and tapes) are often the easiest to use, they have the poorest thermal resistance. They are not recommended because small pockets of air can be trapped during installation. Wet or paste interfaces (grease, gel, wax, and epoxy) have lower thermal resistances and allow air bubbles to migrate out of the interface material.
Although epoxy, when handled correctly, can provide a
reasonable thermal interface, it is not a reliable mechanical attachment. Caution should also be taken with pre-applied trapped beneath the heatsink during assembly. AMD recommends the use of grease and gels as thermal interfaces.
These materials are able to maintain the lowest thermal
resistance more consistently. In general, these materials can
achieve a thermal resistance of 0.15 to 0.3°C/W.
The application of interface material, in addition to material
type, is also important. Its purpose is simply to fill microscopic air gaps and ensure a thermally efficient path for heat transfer.
Only a thin layer of interface material is desired between the
heatsink and processor. Excessive amounts of interface
material will restrict the flow of heat to the heatsink and
thereby make the thermal solution less effective.
Due to the light weight of most heatsinks, mechanical clips are the recommended method of attachment. In addition to
providing stability, clips provide approximately 10–15 pounds
of downward pressure on the heatsink to minimize the thermal resistance of the thermal interface material.
Lets not argue about what I do now and what you are taking for granted.
And as far as you do have an extensive knowledge it doesn't mean that my knowledge is lesser than yours, in deed I might know a little more than you think.
You DO NOT know my background, so be very carefull when you adress me.
AMD has several instructional VIDEOS which discuss the issue of applications and installations.
Here are some of their Videos:
Full video
Processor Install
Heat Sink Install
Heat Sink Removal
Cleaning after Heat Sink Removal
There are thosands of documents which discuss the aplications, methods and materials covered and recommended by the manufacturer. Such can ALWAYS be cited when AMD will not want to pay for your negligence.
Are you by chance suggesting that should you fry CPU when overclocking AMD warranty will cover
your negligence?
Notice that AMD does not recommend any liquids (i.e. alcohol) to clean thermal grease. You might however use fluid such as (only BUTHANE, or degreasing LIQUID GASES) wich evaporates with no residue and does not penetrate the chip.
So please GIVE me the credit for what i know and what I said and do not credit yourself with hear say or speculations.
Believe me that I do have a lot more practical experience in dealing with those issues than you!
The youth, theories and lack of experience is not a substitute for knowledge and practical experience.
You might look on
http://www.amd.com for video on thermal interface materials if you still have some objections.
Thanks for pointing it ou. 
I'd correct it, but it's just too funny, being so ironic and all. 
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