• Open Menu Close Menu
  • Apple
  • Shopping Bag
  • Apple
  • Mac
  • iPad
  • iPhone
  • Watch
  • TV
  • Music
  • Support
  • Search apple.com
  • Shopping Bag
 

Lists

Open Menu Close Menu
  • Terms and Conditions
  • Lists hosted on this site
  • Email the Postmaster
  • Tips for posting to public mailing lists
Re: Mac Pro memory sizes
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Mac Pro memory sizes


  • Subject: Re: Mac Pro memory sizes
  • From: Kenneth Bruno II <email@hidden>
  • Date: Sun, 11 Jan 2009 17:10:59 -0500


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
_______________________________________________

Cocoa-dev mailing list (email@hidden)

Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com

Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden


References: 
 >Mac Pro memory sizes (From: julius <email@hidden>)
 >Re: Mac Pro memory sizes (From: Kenneth Bruno II <email@hidden>)

  • Prev by Date: Re: Mac Pro memory sizes
  • Next by Date: Re: Mac Pro memory sizes
  • Previous by thread: Re: Mac Pro memory sizes
  • Next by thread: Re: Mac Pro memory sizes
  • Index(es):
    • Date
    • Thread