I agree with fhuberts that an AMD CPU should have been included in the test too. At least in the old days, the performance difference between 32 bit and 64 bit was higher on AMD than on Intel.
One more reason for Canonical to not promote 64 bit could be that 32 bit works better in memory constrained environments (e.g. a system with <512 MB RAM and integrated graphics).
One more reason for Canonical to not promote 64 bit could be that 32 bit works better in memory constrained environments (e.g. a system with <512 MB RAM and integrated graphics).
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