Geode (processor)

  • Soldered
  • Socket A

The SoC family of Geode processors has been specially developed for the embedded and low -power field. The Geode has a very checkered history and was originally developed by Cyrix under the name Cyrix MediaGX. With the purchase of Cyrix this know -how was transferred to National Semiconductor. This focused heavily on these SoC circuits, the division was not sold together even after the re- purchase of Cyrix to VIA Technologies, but continued to develop under the new name Geode. The result was the National Geode GX1 and GX2.

For economic reasons, National sold 2003, the corresponding SoC Division at AMD. Since these processors have been developed and manufactured by AMD until AMD Geode integrated the development in July 2006 in the 64 -bit development department. However, AMD had the technique on October 24, 2005, the Chinese Ministry of Science and Technology (Chinese Ministry of Science and Technology - MOST), and licensed to the University of Beijing.

As the successor to AMD Geode AMD Fusion can now be viewed. These so-called APUs are a combination of fuel-efficient x86 CPUs with integrated graphics processor, which were specially developed for very economical and attractively priced systems.

  • 2.1 Geode GX
  • 2.2 Geode LX
  • 2.3 Geode NX
  • 2.4 Geode NX 2001
  • 2.5 Model Data 2.5.1 Geode GX
  • 2.5.2 Geode LX
  • 2.5.3 Geode NX

National Semiconductor

Geode GX1

Following the acquisition of Cyrix by National Semiconductor Geode GX1 National has been developed based on the old Cyrix MediaGX. Among other things, the memory interface of the also integrated memory controller for SDRAM was made ​​suitable.

Geode GX2

The National Geode GX2 is the thoroughly revised successor to the Geode GX1 and is among others equipped with a larger L1 cache, AMD's 3DNow instructions and a longer pipeline. The FPU has been improved ( is now fully pipelined ), and the memory interface of the integrated memory controller also has been changed to DDR SDRAM.

Model data

Geode GX1

  • L1 cache: 16 KB (unified )
  • MMX
  • Geode link interface (based on the base 7)
  • Front Side Bus: NA
  • Memory clock: max. 111 MHz
  • Operation voltage ( Vcore ): 1.6 V to 2.2 V
  • Power consumption ( TDP ): max. 1.4 W @ 2,2 V/333 MHz
  • Release Date: April 12, 2000
  • Manufacturing Technology: 0.18 micron
  • Clock rates: 200, 233, 266, 300 and 333 MHz

Geode GX2

  • L1 - Cache: 16 16 KB ( data instructions )
  • MMX, 3DNow
  • Geode link interface (based on the base 7)
  • Front Side Bus:
  • Operation voltage ( Vcore ):
  • Power consumption ( TDP):
  • Release Date: October 17, 2001
  • Manufacturing Technology: 0.15 micron at National
  • Clock rates: 266, 333 and 400 MHz
  • The processor has been discontinued in 2009, there is no direct successor

Geode GXLV

  • L1 cache: 16 KB (unified )
  • MMX
  • Front Side Bus:
  • Operating voltage ( Vcore ): 2.2 V, 2.5 V, 2.9 V
  • Operating voltage ( I / O): 3.3 V (5V tolerant )
  • Power consumption ( typical): 1.0 W at 2.2 V/166 MHz and 2.5 W at 2.9 V/266 MHz
  • Date of publication:
  • Manufacturing Technology: 0.25 micron CMOS four layer
  • Clock rates: 166, 200, 233, 266 MHz
  • Housing: 352 -pin BGA terminal or 320 -pin SPGA

Advanced Micro Devices

Geode GX

The AMD Geode GX has the same specifications as the National Geode GX2. To enhance the already aged design, AMD decided to introduce a P rating to ensure comparability with competitors (by a VIA C3). AMD's P rating of the AMD Geode GX is reminiscent of the old P rating of Cyrix, which has never really voted: Comparative tests have shown that AMD Geode GX underperforms its competitors. Positive note, however, that AMD additionally with appending the power to the P rating. However, the average consumption is not the TDP this is specified, that is, under high load, the power loss is significantly higher than the P rating suggests. The availability of AMD guaranteed until 31 December 2009.

Geode LX

The AMD Geode LX is the evolution of AMD Geode GX and therefore also very strong based on the processor architecture of National or Cyrix. However, AMD has made ​​changes in this CPU: L1 cache has been increased to 128 KB and added an L2 cache of 128 KB. In addition, an already known from the Centaur Nehemiah AES engine was integrated. The CPU was thus more powerful than its predecessor, but their P rating as well as the stated consumption is very doubtful. With these changes, it is attempted to make the outdated CPU design competitive. A 600 MHz version was announced in February 2007. The availability of the processor family, AMD plans to the year 2015. According to AMD's Embedded Roadmap still some improvements to the Geode LX CPU to be made in the future.

Geode NX

With the AMD Geode NX tries first to move into a larger scale in a market segment that mainly VIA Technologies EPIA boards with the dominated (based on CPUs from Centaur Technology ). Further cooperation with a SiS Mini - ITX board has been developed by LogicPD that is very reminiscent of the features on VIA's EPIA series.

Contrary to what its name suggests, the Geode NX is not an evolution of the original Geode designs, but one based on the Athlon XP processor. Both processor families are distributed in parallel by AMD and are fundamentally different in its architecture. The Geode NX is only a low clocked and operated with lower voltage Thoroughbred B, which already came with the Athlon XP, Athlon MP, and not least the Athlon XP -M for use and so now again coming into favor. According to well of course, the support chipsets and software, which is quite an advantage for AMD. As usual with AMD since the Athlon XP, also owns the Geode NX model numbers for the classification performance.

Geode NX 2001

In 2007, a Geode NX 2001 was sold, which was a renamed Athlon XP 2200 Thoroughbred. The processors with part numbers AANXA2001FKC3G or ANXA2001FKC3D had 1.8 GHz and 1.65 Volt core voltage, power consumption, however, was not specified. For this processor, there are no official statements, only a few copies were sent to special customers. Nevertheless, it appears to be ( Socket A), no association with the other Geode NX processors except the same CPU socket.

Model data

Geode GX

Geode LX

  • Codename: Castle
  • L1 - Cache: 64 64 KB ( data instructions )
  • L2 cache: 128 KB with processor clock
  • MMX, 3DNow
  • Geode link interface (based on the base 7)
  • Release Date: May 2005
  • Manufacturing Technology: 0.13 micron TSMC

Geode NX

  • Codename: Thoroughbred B
  • L1 - Cache: 64 64 KB ( data instructions )
  • L2 cache: 256 KB with processor clock
  • MMX, Extended 3DNow, SSE, PowerNow!
  • Socket A, EV6 133 MHz (FSB 266)
  • Operation voltage ( Vcore ): 1250 @ 6W: 1.1V
  • 1500 @ 6W: 1.0 V
  • 1750 @ 14W: 1.25 V
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