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In "Dual-channel architecture", a portion of "Performance" section was detailing Quad-channel's performance compared to Dual-channel's, so I've moved it to the Quad-channel section as it doesn't add any more information about Dual-channel's performance itself. |
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=== Performance ===
Theoretically, dual-channel configurations double the memory bandwidth when compared to single-channel configurations. This should not be confused with [[double data rate]] (DDR) memory, which doubles the usage of DRAM bus by transferring data both on the rising and falling edges of the memory bus clock signals.
A benchmark performed by [[TweakTown]], using SiSoftware Sandra, measured around 70% increase in performance of a quadruple-channel configuration, when compared to a dual-channel configuration.<ref name="tweaktown-banchmark">{{cite web▼
| url = http://www.tweaktown.com/articles/4416/intel_x79_quad_channel_and_z68_dual_channel_memory_performance_analysis/index.html▼
| title = Intel X79 Quad Channel and Z68 Dual Channel Memory Performance Analysis▼
| date = 2011-11-16 | access-date = 2013-11-30▼
| author = Shawn Baker | publisher = [[TweakTown]]▼
}}</ref>{{rp|p. 5}} Other tests performed by TweakTown on the same subject showed no significant differences in performance, leading to a conclusion that not all benchmark software is up to the task of exploiting increased parallelism offered by the multi-channel memory configurations.<ref name="tweaktown-banchmark" />{{rp|p. 6}}▼
=== {{Anchor|GANGED}}Ganged versus unganged ===
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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" />
=== Performance ===
▲A benchmark performed by [[TweakTown]], using SiSoftware Sandra, measured around 70% increase in performance of a quadruple-channel configuration, when compared to a dual-channel configuration.<ref name="tweaktown-banchmark">{{cite web
▲ | url = http://www.tweaktown.com/articles/4416/intel_x79_quad_channel_and_z68_dual_channel_memory_performance_analysis/index.html
▲ | title = Intel X79 Quad Channel and Z68 Dual Channel Memory Performance Analysis
▲ | date = 2011-11-16 | access-date = 2013-11-30
▲ | author = Shawn Baker | publisher = [[TweakTown]]
▲}}</ref>{{rp|p. 5}} Other tests performed by TweakTown on the same subject showed no significant differences in performance, leading to a conclusion that not all benchmark software is up to the task of exploiting increased parallelism offered by the multi-channel memory configurations.<ref name="tweaktown-banchmark" />{{rp|p. 6}}
=== Supporting processors ===
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