Advantages of 64-bit mobile processor?

[DA CPU WIZARD]

The iPhone 5S is rumored to include the brand new A7 processor which has been hinted at being 64-bit. What advantages does a 64-bit processor have over the last generations (presumably) 32-bit processor?

Does this mean that the 5S can utilize more RAM then the 5? Just as a 64-bit operating system can versus a 32-bit operating system?

Any explanations, links, and info is greatly appreciated! Thanks.

 

[Suspicious-Teach8788]

how long til we get 64-bit native apps across the board? aren't Windows browsers still 32-bit?

 

[ControlD]

how long til we get 64-bit native apps across the board? aren't Windows browsers still 32-bit?

I'm pretty sure Windows 7/8 64 bit versions also come with a 64 bit version of IE.

 

[Graze]

None!

 

[poofyhairguy]

What advantages does a 64-bit processor have over the last generations (presumably) 32-bit processor?

When we have 8GB of RAM in a phone....

 

[TuxDave]

More memory space? Faster large int operations? Maybe more GPRs (like those added in x86_64)? New instructions?

I haven't heard or read about this news. The interesting part would be the total package instead of the big headline of "64-bit!!!!"

 

[Suspicious-Teach8788]

I'm pretty sure Windows 7/8 64 bit versions also come with a 64 bit version of IE.

Yes but isn't the default still the 32-bit browser?

 

[ControlD]

Yes but isn't the default still the 32-bit browser?

Yes, the 32-bit version is the default.

 

[JAG87]

The advantages are basically in what functions the the operating system can complete faster using 64-bit extensions. Faster execution = more idle time = longer battery life.

That's it. There's nothing else.

 

[Oyeve]

I thought the 64bit ios rumor was squashed already!

 

[Ravynmagi]

Primary benefit I would imagine is being able to address more RAM. I think the 32 bit processors are mostly limited to 2GB per process.

 

[Graze]

Primary benefit I would imagine is being able to address more RAM. I think the 32 bit processors are mostly limited to 2GB per process.

Ugh, you are wrong. Its 4 gigs dude!

 

[webdave]

Ugh, you are wrong. Its 4 gigs dude!

He was referencing processes, and there is a 2GB limit on processes.

http://blogs.msdn.com/b/tom/archive...y-limits-for-32-bit-and-64-bit-processes.aspx

 

[jpiniero]

Actually, the 5S is still likely to only have 1 GB of ram and that the point is to increase the memory bandwidth.