I agree with this, dual channel broke on my PC and it wouldn't boot up unless it was set at single channel and there was little to no difference in performance.
But it this way a system with 3GB unpaired with outperform a system with 2GB paired.
Since the santa rosa platforum it doesn't mather if those dimm modules are the same, speed is equal. But if you don't have a SR machine, like the macbook pro 2.33, you get some speed increasment with identically pairs of memory modules.
Since the santa rosa platforum it doesn't mather if those dimm modules are the same, speed is equal. But if you don't have a SR machine, like the macbook pro 2.33, you get some speed increasment with identically pairs of memory modules.