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=== Operation ===
Quad-channel memory debuted on Intel's Westmere-EX [[LGA 1567]] platform in 2011, and was later introduced to the high end product line on the [[Intel X79]] [[LGA 2011]] platform with Sandy Bridge-E, which would also be used for the higher end Xeons for the next few iterations. [[DDR4]] replaced [[DDR3]] on the [[Intel X99]] [[LGA 2011]] platform, and is also used in AMD's [[Threadripper]] platform.<ref>[https://hothardware.com/news/amd-ryzen-threadripper-prey-4k-radeon-rx-vega-hits-in-july AMD Ryzen Threadripper And Vega Attack Prey At 4K, Quad GPUs Shred Blender, Radeon RX Vega Hits In July], "....with 16 cores and 32 threads with support for quad-channel DDR4 memory......"</ref> [[DDR3]] quad-channel architecture is used in the [[AMD]] [[Socket G34|G34]] platform and in the [[Intel X79]] [[LGA 2011]] platform. AMD processors for the [[Socket C32|C32]] platform and Intel processors for the [[LGA 1155]] platform (e.g. [[Intel Z68]]) use dual-channel DDR3 memory instead.
The architecture can be used only when all four memory modules (or a multiple of four) are identical in capacity and speed, and are placed in quad-channel slots. When two memory modules are installed, the architecture will operate in a dual-channel mode; When three memory modules are installed, the architecture will operate in a triple-channel mode.<ref name="support.intel.com" />
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