Dual Channel RAM

This is just a random question out of nowhere, but what will dual channel ram improve over single channel ram?

My friend asked me and I didn't have an answer. He has a somewhat old (core 2 duo) system and was thinking about adding another stick of ram for dual channel and getting windows 7 64 bit. He's a moderate gamer who likes recording things he does with fraps.

I saw Tom's Hardware did a test a while ago and said that the improvement from single to dual is around 5% for gaming.

He also wanted to know if the dual channel RAM will improve transferring big fraps files to his new 2nd hard drive. That again, I didn't have an answer for.
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More about dual channel
  1. www.en.wikipedia.org/wiki/Dual-channel_architecture

    More than the architecture itself, the increased amount of memory will surely show benefits to your friend system.. It will enable smoother multi-tasking experience and better application performance.. However, make sure that the memory sticks are identical (same if possible)..
  2. Emperus said:
    www.en.wikipedia.org/wiki/Dual-channel_architecture

    More than the architecture itself, the increased amount of memory will surely show benefits to your friend system.. It will enable smoother multi-tasking experience and better application performance.. However, make sure that the memory sticks are identical (same if possible)..

    Read through that, thanks.

    Does anyone have a personal experience when they upgraded from single to dual channel RAM?
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