On Jan 11, 2009, at 5:04 PM, Kenneth Bruno II wrote:
On Jan 11, 2009, at 4:44 PM, julius wrote:
About This Mac says that I have 2GB of internal memory.
Is this 2GB of 64-bit words or 2GB of 8-bit bytes?
I appreciate that GB is Giga Byte but ......
Similarly with respect to the L2 Cache, I have 12 MB per processor,
is that 12 MB by 8 bits or 64 bits?
Although the term byte can be variable depending on architecture,
this is something that is rarely done now. You can be pretty much
sure that when something says byte it is supposed to mean 8 bits.
Now technically a gigabyte (GB) is 10^6 bytes (1,000,000 bytes) but
often people mean 2^20 bytes (1,048,576 bytes). In actuality a
gibibyte (GiB) is 2^20 bytes but it's not used in all the places it
should be used.
Here's some more information for you:
<http://en.wikipedia.org/wiki/Byte>
My bad here, I accidently used the wrong amounts and confused mega-
and mebi- with giga- and gibi-
It should be:
megabyte (MB): 10^6 bytes (1,000,000 bytes)
mebibyte (MiB): 2^30 bytes (1,048,576 bytes)
gigabyte (GB): 10^9 bytes (1,000,000,000 bytes)
gibibyte (GiB): 2^30 bytes (1,073,741,824 bytes)
- Ken
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