View Full Version : Why much more space for x86_64 installation
29th October 2010, 06:10 AM
Why does an x86_64 installation need much more disk space than an i686 installation?
29th October 2010, 04:37 PM
Can you quantify "much more"? In general, 64-bit needs more space since the packages are a bit larger. It also needs more memory due to the same reason.
29th October 2010, 04:44 PM
It is also likely that you have some 32-bit compatibility libraries installed, which will increase installation size depending on how many (but could be quite large).
29th October 2010, 04:46 PM
Address locations are 64 bits, so every transfer, function call, and variable
location requires 64 bits.
The expansion really shouldn't be more than about 20% on disk. Memory
requirements while executing can requite a good bit more depending on
the program, and how it is used.
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