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64-bit processors

Aceyalone

By Aceyalone
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Aceyalone

Aceyalone

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Today at university I picked up a conversation with my programming processor! Well I dont know if this stament stands true however he told be that 64-bit processors can hold double length word commands! Well as a conclusion one 64-bit word stands in for double memory than that of 32-bit! Yes and I know these, but so far I thought that a 64-bit processor with a 64-bit OS would half the pauses between reading 32-bit words. As far as I understood, he told me that this doesnt happen and a 32-bit word is stored in a 64-bit memory stack! Well that means that my memory must be twice as much to have the same performance as the latter one!

 

Still, why do that, since assembly manages things good enough in 32-bit commands. Does this stands true or its just me having not understood well...

 

 

--> Oh and something else...Uni had given us a free book for learning C++ which is not easily understood and its not in my kind of likes. Despite tha fact that I already have passed both C++ courses I made a small search for good C++ books. I concluded in deitel series (www.deitel.com). If someone knows, are these good books? And if not which would be a good one?

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sparhawk

sparhawk

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Not sure I understand your posting. But a 64 bit CPU is not neccessarily twice as fast just because it can use 64 bits directly. the data must still be fetched from memory, and it can happen that a 64bit CPU becomes eevn slower because of that, if it has to fetch a lot of 64 bit data and then discards it, because the program decides that it can't use it. 64bit becomes faster when you can actually make use of 64bit data, or when you need to adress much bigger memory than a 32bit CPU can handle out of the box.

Gerhard

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Crispy

Crispy

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Central Lecturing Unit. :P

My games | Public Service Announcement: TDM is not set in the Thief universe. The city in which it takes place is not the City from Thief. The player character is not called Garrett. Any person who contradicts these facts will be subjected to disapproving stares.
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