After arriving at an understanding of dual channel mode I realized my dell latitude C540/640 laptop running with 3 gb ram (2 usable) should have 2 x 1 gb modules. I do not think that 2 modules can alternate homogeneously if they do not have the same exact specs. It runs a little faster now along with readyboost, etc.
Verified purchase: Yes | Condition: Pre-owned
Added memory to a laptop and this was a good price and fit exactly!
Verified purchase: Yes | Condition: Pre-owned
Item as described. Works great! Should have done this upgrade long ago! Fast shipper. Good packing. Thanks !!!
Verified purchase: Yes | Condition: Pre-owned
memory works fine, nice packing.
Verified purchase: Yes | Condition: Pre-owned
Very good
Verified purchase: Yes | Condition: Pre-owned
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