About: Socket G3 Memory Extender

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The Socket G3 Memory Extender (G3MX) was a planned Advanced Micro Devices' solution to the problem of connecting large amounts of memory to a single microprocessor. The G3MX was expected to be available on AMD 800S series chipset for server market starting from 2009, but was officially cancelled together with the cancellation of Socket G3 in early 2008. The obvious solution is to use a narrower, higher-speed bus to interface to memory, and to implement it as a point-to-point link, daisy-chaining additional modules. However, Intel have made two attempts at this, neither hugely successful:

Attributes	Values
rdf:type	yago:Artifact100021939 yago:Device103183080 yago:Instrumentality103575240 yago:Object100002684 yago:PhysicalEntity100001930 yago:Whole100003553 yago:WikicatAdvancedMicroDevices
rdfs:label	Socket G3 Memory Extender (en)
rdfs:comment	The Socket G3 Memory Extender (G3MX) was a planned Advanced Micro Devices' solution to the problem of connecting large amounts of memory to a single microprocessor. The G3MX was expected to be available on AMD 800S series chipset for server market starting from 2009, but was officially cancelled together with the cancellation of Socket G3 in early 2008. The obvious solution is to use a narrower, higher-speed bus to interface to memory, and to implement it as a point-to-point link, daisy-chaining additional modules. However, Intel have made two attempts at this, neither hugely successful: (en)
dcterms:subject	X86 memory management Advanced Micro Devices products
Wikipage page ID	12900079 (xsd:integer)
Wikipage revision ID	934234866 (xsd:integer)
Link from a Wikipage to another Wikipage	DIMM Daisy chain (electrical engineering) Memory latency RDRAM Point-to-point (telecommunications) Advanced Micro Devices X86 memory management DDR SDRAM Semiconductor device fabrication AMD 800 chipset series AMD Socket G3 Advanced Micro Devices products FB-DIMM Intel Motherboard
Link from a Wikipage to an external page	http://www.hothardware.com/News/More_AMD_G3MX_Details_Emerge/ http://www.vnunet.com/vnunet/news/2194881/amd-unveils-memory-system https://www.amd.com/us-en/Corporate/VirtualPressRoom/0%2c%2c51_104_543~118446%2c00.html
sameAs	Socket G3 Memory Extender Socket G3 Memory Extender Socket G3 Memory Extender Socket G3 Memory Extender
dbp:wikiPageUsesTemplate	dbt:Cite_web dbt:Reflist dbt:Cite_press_release
has abstract	The Socket G3 Memory Extender (G3MX) was a planned Advanced Micro Devices' solution to the problem of connecting large amounts of memory to a single microprocessor. The G3MX was expected to be available on AMD 800S series chipset for server market starting from 2009, but was officially cancelled together with the cancellation of Socket G3 in early 2008. Electrical limitations preclude connecting more than 2 unbuffered DDR SDRAM DIMMs or 4 buffered DIMMs to a single shared bus. It is also impractical to manufacture a single chip with more than two DDR memory buses (channels). Thus, it is impossible to connect more than 8 DIMMs to a single chip. This is typically the per-processor limitation as well. The obvious solution is to use a narrower, higher-speed bus to interface to memory, and to implement it as a point-to-point link, daisy-chaining additional modules. However, Intel have made two attempts at this, neither hugely successful: * RDRAM implements the bus on a DRAM chip. However, the high-speed circuitry increased power consumption, and the daisy-chaining caused significantly higher memory latency. Because it is difficult to implement high-speed circuitry on the same semiconductor process, costs were high. * FB-DIMMs add a separate memory controller chip to each memory DIMM. This "advanced memory buffer" (also known by the abbreviation AMB) provides the necessary high-speed circuitry. However, the same power and heat problems have arisen. AMD's answer to this is the G3MX chip. This is very similar to the AMB, but is intended to be placed on the motherboard, not on the DIMM. It can connect to multiple DIMMs but, to minimize latency, is not designed to be daisy-chained. The G3MX has an asymmetrical link to the processor, to match typical memory usage patterns. 20 differential signals supply read data to the processor, and 13 differential signals receive commands and write data. This totals 66 pins, less than half of what is required for a DDR2 or DDR3 interface. Thus, a processor can easily have 4 G3MX memory interfaces, each with 4 buffered DIMMs attached, allowing up to 16 DIMMs to feed one processor. (en)
gold:hypernym	Micro
prov:wasDerivedFrom	wikipedia-en:Socket_G3_Memory_Extender?oldid=934234866&ns=0
page length (characters) of wiki page	3426 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Socket_G3_Memory_Extender
is Link from a Wikipage to another Wikipage of	Fully Buffered DIMM AMD 800 chipset series AMD Socket G3 Socket G34 G3MX
is Wikipage redirect of	G3MX
is foaf:primaryTopic of	wikipedia-en:Socket_G3_Memory_Extender

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