AMD Phenom II

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<<   AMD Phenom II     
Phenom logo
Production: 2009 to 2011
Processor clock: 2.5 GHz to 3.7 GHz
HT cycle: 1.8 GHz to 2.0 GHz
Instruction set : x86 / AMD64
Microarchitecture : K10 / AMD64
Names of the processor cores:
  • Deneb
  • Heka
  • Callisto
  • Thuban

The Phenom II from AMD is a multi-core processor for desktop computers ; he is a representative of the K10 generation . With the Phenom II, AMD initially switched from a four-digit system to a three-digit system.


AMD presented the first models of the Phenom II on January 8, 2009. Phenom II X4 920 and 940 were intended for the AM2 + socket, so that the DDR3 memory controller was also deactivated. The Phenom II X4 810 was the first model to hit the market on February 9, 2009 for the AM3 socket .

On April 27, 2010 AMD presented the two new processors of the Thuban range. These have six processor cores and a feature called Turbo Core , which increases the clock rate of up to three cores from 2.8 to 3.3 GHz or from 3.2 to 3.6 GHz. In order for the cores to increase their clock rate, at least three cores must be in C1 sleep mode ( halt ).


For CPUs in C2 stepping , it is recommended to install only one DIMM per memory channel (dual-channel) when using DDR3-1333 , or when fully equipped, i.e. two DIMMs per channel, to install only DDR3-1066 or the DDR3- 1333 clock should be reduced to DDR3-1066 clock, since unreliable operations can occur in C2 stepping when fully equipped with DDR3-1333. In C3 stepping, reliable operation is also guaranteed when fully equipped with DDR3-1333.


The two- and three-core processors of the Phenom II series (Callisto and Heka) are actually 4-core processors in which one or two cores and their L1 and L2 cache have been deactivated. Originally, processors with defective cores were supposed to be made available for sale in order to reduce the amount of rejects. However, it seems that working cores are also disabled quite often. These cores can be reactivated with some mainboard / BIOS configurations. If they have not been deactivated due to errors, they can be used in regular operation.


The production of the processor series was discontinued with the conversion of the factories at Globalfoundries to 32 nm production in 2011. The products are only available until the warehouse is emptied. The AMD FX processors will replace the Phenom II processors in the future, but are not a direct successor from a technical point of view, as the processor microarchitecture is very different.

Model data

Main article: List of AMD K10 processors (desktop)

Six-core processors


AMD Phenom II X6 1090T for socket AM3

Quad-core processors


AMD Phenom II X4 840 for socket AM3
  • Sales name: Phenom II X4
  • Quad-core processor
  • Revision: C2, C3
  • L1 cache: per core 64 + 64 KiB (data + instructions), 2-fold associative
  • L2 cache: 512 KiB per core with processor clock, 16-fold associative
  • L3 cache: 6144 KiB with 1.8 - 2.0 GHz, shared, 48-fold associative (not completely activated on some models)
  • MMX , Extended 3DNow! , SSE , SSE2 , SSE3 , SSE4a , AMD64 , Cool'n'Quiet 3.0, NX-Bit , AMD-V
  • HyperTransport 3.0 with 1800 MHz (HT3600) or 2000 MHz (HT4000)
  • Socket AM2 + , DDR2 memory controller: Dual Channel , support up to DDR2 -1066
  • Socket AM3 , DDR3 memory controller: Dual Channel support up to DDR3 -1333 (not available in models X4 920 and X4 940)
  • Manufacturing technology: 45 nm SOI, immersion lithography
  • Die size: 258 mm² with 758 million transistors
  • Clock frequencies: 2.5-3.7 GHz
  • Models: Phenom II X4 805 to 980 Black Edition except 960T (Thuban with two deactivated cores) and except X4 840 and 850 ( Propus with missing L3 cache)

Tri-core processors


Dual core processors


See also

Individual evidence

  1. Computerbase: Test: AMD Phenom II X4 920 and 940 Black Edition , test report from January 8, 2009, accessed on May 16, 2010
  2. Computerbase: Test: AMD Phenom II X4 805 and 810 , test report from February 9, 2009, accessed on May 16, 2010
  3. Advanced Micro Devices, Inc. (Ed.): Revision Guide for AMD Family 10h Processors . Rev. 3.92, 2012, p. 32 ( PDF [accessed on May 9, 2014] see Erratum 379). PDF ( Memento of the original from August 17, 2014 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice.  @1@ 2Template: Webachiv / IABot /
  5. AMD stops shipping Phenom II and Athlon II processors

Web links

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