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Q: What processor is this? ( Answered 5 out of 5 stars,   3 Comments )
Subject: What processor is this?
Category: Computers > Hardware
Asked by: davidwagner79-ga
List Price: $2.00
Posted: 28 Nov 2006 16:15 PST
Expires: 28 Dec 2006 16:15 PST
Question ID: 786333
I received a new AMD processor with the following printed on the front
side. What model and $ value is my processor?

AMD Athlon 64 FX
Assembled in Malaysis
2001 AMD
Subject: Re: What processor is this?
Answered By: sublime1-ga on 28 Nov 2006 16:41 PST
Rated:5 out of 5 stars

What you have is a model FX-55, 2600Mhz, Socket 939 processor,
as detailed on this page from AMDcompare:

The two best places to look at the current value are:


eBay (don't look at the bid figures, but the BuyItNow prices):

So, around $200-230, and more, if you have the AMD box with 
the Box Fan and Heat Sink, and 3 year warranty.

If you have any questions, don't hesitate to post a Request for 


Searches done, via Google:


Request for Answer Clarification by davidwagner79-ga on 28 Nov 2006 16:43 PST
When I visit:

I see that the prices have a wide range. Some are listed as high as
$1500. What is the reason for this price difference?

Clarification of Answer by sublime1-ga on 28 Nov 2006 18:05 PST
The item for $1430 is a computer that is built with the processor
as a component. As for the ones listed at $899, this is the CPU
plus the box fan and the heat sink in the original AMD package
with a 3 year warranty, such as pictured here at SpartanTech:

Also notice the part number ADAFX55BNBOX on these listings, vs
ADAFX55DEI5AS. The former is the AMD Athlon 64 FX-55 San Diego
2.6GHz Socket 939 Processor, as can be seen in the images of
the CPUs on some of the listings on eBay. The latter is the
AMD Athlon 64 FX-55 ClawHammer 2.6GHz Socket 939 Processor,
as can be seen on this listing from Newegg:

They're both AMD Athlon 64 FX-55 2.6GHz Socket 939 processors,
but the San Diego is version 1.2.3 of the 1.2 Athlon 64 FX
series, while the ClawHammer is version 1.2.2, as can be seen
on this Wiki page:

You can compare the two on the same page, at this link:

With its slightly lower operating voltage, the San Diego is
more desirable to the overclocking crowd.

The newer San Diego version supports SSE3, which is explained
on this Wiki page:

Since the ClawHammer has been around for longer, the price on
PriceWatch is more stabilized, and $139 is probably a more
realistic low-end price for the CPU. On the other hand, for 
less wary buyers looking for a AMD Athlon 64 FX-55 2.6GHz
Socket 939 processor without regard for the version number,
$200 is not an unrealistic price for the ClawHammer. Not
everyone knows to look at PriceWatch for the lowest available

For example, here's a Froogle search for the ClawHammer that
shows results for the unboxed version at between $140 and $222:

davidwagner79-ga rated this answer:5 out of 5 stars
Great researcher. Thank you for your help.

Subject: Re: What processor is this?
From: barneca-ga on 28 Nov 2006 16:17 PST
if it truly says "assembled in malaysis", i think you've been robbed.

Subject: Re: What processor is this?
From: ubiquity-ga on 29 Nov 2006 13:59 PST
Interestingly, there is a reference to 2001 in the information
provided, by the 64 but architecture did not come out until 2003.
Thats a little wierd.
Subject: Re: What processor is this?
From: sublime1-ga on 29 Nov 2006 15:32 PST
That's when it was copyrighted. If you look at the images of
the back of the chip you'll see 2001.

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