AMD Athlon X2

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AMD Athlon X2.svg
Production: 2007 to 2010
Producer: AMD
Processor clock: 1.9 GHz to 2.8 GHz
HT cycle: 1,000 MHz to 1,800 MHz
L2 cache size: 1 MiB
Instruction set : x86 / AMD64
Microarchitecture : K9 and AMD K10 / AMD64
Names of the processor cores:
  • Brisbane
  • Kuma
  • Regor

The AMD Athlon X2 is a microprocessor for computers . Processors for the AM2 socket are an Athlon 64 X2 with a smaller standard TDP and a new designation scheme. Athlon X2 for the AM2 socket is therefore also a member of the K9 generation . Processors for the AM2 + socket, on the other hand, are based on the new AMD K10 architecture; these processors are technically identical to the Phenom processors, but have only two cores.


The AMD Athlon X2 for the AM2 socket is just a renamed Athlon 64 X2 and largely identical to it. As part of the introduction of the new K10 generation ( AMD Phenom ), AMD is changing the names of its processor products and giving existing processors new names. However, these still correspond to their "predecessors" in terms of technology and purpose. Newer products for the AM2 + socket on the newer K10 architecture can be distinguished from the K9 products by the product number and the technical data, while the name “Athlon X2” remains.

Product history

Like the Athlon 64 X2, the Athlon X2 for Socket AM2 contains two processor cores and is largely identical to its Socket AM2 variant. It also has a two-channel memory controller with support for DDR2 SDRAM , which is shared by both processor cores. The processor continues to serve as the basis for AMD LIVE! . With a better selection, AMD was able to reduce the power loss of the 65 nm processors from a maximum of 65 W in the Athlon 64 X2 to a maximum of 45 W in the Athlon X2. With the appearance of the new stepping 2 of the revision G at the beginning of October 2007, the speed could be further increased with the BE-2400, which was released on October 8, 2007, without the power loss of 45 W having to be increased.

In September 2008, AMD presented a dual-core processor on the K10 architecture. Like its four-core and three-core derivatives, the processor has an L3 cache and a higher HT clock in addition to the L2 cache, but is downward compatible with the AM2 socket. The first dual-core processors on the K10 architecture (Kuma) are only Phenom processors in which two of the four cores have been deactivated.

Designation scheme

Like the AMD Athlon , the Athlon X2 was given a new naming scheme in the course of preparations for the introduction of the AMD Phenom . The old Quantispeed designation scheme of the Athlon 64 X2 was replaced with a new version that is similar to that of the AMD Opteron processors, but has a slightly different structure: It consists of two letters followed by a hyphen and a four-digit number (e.g. . LE-1620).

  • The first letter stands for the market segment, B means middle class . ( G = premium product , L = value product )
  • The second letter indicates the approximate power loss, E means less than 65 W TDP. ( P > 65 W, S approx. 65 W, E <65 W)
  • The first digit of the four-digit number stands for the type family, the other three digits assign the processor within this type family. ( 1xxx = Sempron / Athlon, single-core , 2xxx = Athlon, dual-core )

The OPN of the Athlon X2 processors begins with the letters 'ADH'.

When the Phenom processors were introduced, AMD dropped the letters in front of the model number and since then has only had one model number for the Athlon X2 . (In the case of energy-saving versions, a small “e” is added to the model number instead of the preceding capital “E”.)

Further development

The Athlon X2 was replaced in June 2009 by new processors in 45 nm technology called Athlon II X2 and AMD Phenom II X2 . In 2010, AMD re-issued processors from the 45 nm production line under the Athlon X2 logo. However, these processors had little relevance on the market, as they were only manufactured in very small quantities and most of them were shipped to Asia and to the OEMs.

Model data socket AM2

All processors for the AM2 socket have a memory controller with two channels (128 bit, dual-channel operation ) for DDR2 SDRAM .


Dual core processor

Model data socket AM2 +


Dual core processor

Kuma II?

Dual core processor

Individual evidence

  1. Name juggling at AMD
  2. Heise online: AMD: 45-watt dual cores and the departure from QuantiSpeed , June 5, 2007.