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Twisticles

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  1. Erm, I think you're confusing DDR with dual channel, where each channel can access two RAM modules at the same time. Are you implying that a quad stick 3200MHz kit will run each module at 800MHz?!? DDR is when data is transferred on both the uptick and downtick of the clock In Single Data Rate, this only happens once per clock bus cycle. In DDR this happens twice as often per cycle, so a clock bus of 1600MHz gives you a data transfer rate at double that i.e 3200MHz. Dual Channel and DDR are separate technologies but often found together. For the OP: Your software is reporting the I/O Bus Clock (1600MHz) but as you have DDR RAM, that is correct - double data at 1600MHz would be in effect 3200MHz. Just to be more confusing, your BIOS is probably reports 3200MHz as mobo manufacturers usually do the math and report the doubled speed. CPU-Z etc will not.
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