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2 pairs of CMX4GX3M2A1600C8 vs 8GB kit


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My vendor didnt have the 8GB kit in stock so I purchased 2 x 4GB kit CMX4GX3M2A1600C8.


This is used in a i7 board with p55 chipset (Gigabyte GA-P55-UD4) with i860 CPU. AFAIK the board support 16GB of ram.


I see various posts here saying that 2x4GB kits require slower speed settings than the same 8GB kit.


Is there a hardware limitation or stored setting in the module that prevents 2x 4GB kits working together at full speed or is the only difference in the testing. This machine is running at stock speeds..but naturally I'd like to get the 1600 speed from the RAM.


I've only installed 1 x 4GB kit at the moment (resisting breaking the seals on the second kit until I get clarification on what the downside of the 2 x4g kit).

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