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Exynos 5430

usmann090

usmann090

Well-Known Member
I have searched alot but not sure about that whether the chip Exynos 5430 is 64 bit?
Any one sure about that ?
And please provide the source.
Thank you
 

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usmann090 said:
I just downloaded Antutu benchmark app
And it shows that Exynos 5433 is 64 bit
Click to expand...

Hi,

Indeed the Exynos 5433 is 64 bit. Source here. The link I posted before was for the Exynos 5430 as per your original question. The one thing that confuses me a little is the fact that it only has a 32bit data bus. This means that it will need two cycles to load one 64bit word. I don't know if this is normal because I am more of a server side guy, but it does not strike me as being very efficient.

BTW: The only real benefit of 64bit is to provide a greater address space (and to have bigger integers). Since the Note 3 is limited by its 3Gb of RAM you will not need that address space. This is why the Note 5 needs a 64bit OS to make use of its 4Gb of RAM. So, unless to want to count really high, I personally wouldn't bother.

Regards,
Eric.
 
touringhaggis said:
Hi,

Indeed the Exynos 5433 is 64 bit. Source here. The link I posted before was for the Exynos 5430 as per your original question. The one thing that confuses me a little is the fact that it only has a 32bit data bus. This means that it will need two cycles to load one 64bit word. I don't know if this is normal because I am more of a server side guy, but it does not strike me as being very efficient.

BTW: The only real benefit of 64bit is to provide a greater address space (and to have bigger integers). Since the Note 3 is limited by its 3Gb of RAM you will not need that address space. This is why the Note 5 needs a 64bit OS to make use of its 4Gb of RAM. So, unless to want to count really high, I personally wouldn't bother.

Regards,
Eric.
Click to expand...
Yes , I actually didn't notice.
Thank you
I actually wanna ask about Exynos 5433.
Yeah,I also have noticed its 32bit data bus.
I don't know much about that stuff.
As you mentioned, Note 5 has 64 Bit OS to make use of 4GB of RAM.
But I think 32bit can handle upto 4GB of RAM
& one thing more I wanna ask is that why Samsung has not published that they have 64bit Processor in Note 4 & will they ever upgrade the software to use Note 4 upto its 64 bit limit.
Because til now its only 32bit.
Thanks for support.
 
Ok, again my knowledge comes from desktop/server machines in this case, but: 32bit can address approximately 2.9 - 3.5Gb of memory depending on how much of the address space needs to be reserved for video buffer etc. If you are interested you can read more about this issue here.

I assume that Samsung put a 64bit processor in the Note 4 because it was on their roadmap to develop and use a 64bit OS. However, since the Note 4 launched with KitKat (a 32 bit OS), I guess they didn't manage to get the software ready in time even when the hardware was ready, so 32 bit was the fallback solution. I would fully imagine that the cost difference between 32bit and 64bit would be negligible. Certainly it would be cheaper to develop one CPU rather than two (since a 64bit CPU can happily run 32bit software). Basically Samsung were simply covering their bases and avoiding delays.

Samsung, I assume, didn't tell anyone this (if I am correct about the above) because 99% of people wouldn't care, while the other 1% could check since the information is public. I personally would not issue a press release, so I guess Samsung didn't either. Now, it could be that Lollypop (an OS with 64bit support) does make use of the CPU in the Note 4, but since there are so few apps that currently make use of long integers it is going to be hard to tell the difference.

Just keep in mind that all of the above is speculation ;)

Regards,
Eric.
 
touringhaggis said:
Ok, again my knowledge comes from desktop/server machines in this case, but: 32bit can address approximately 2.9 - 3.5Gb of memory depending on how much of the address space needs to be reserved for video buffer etc. If you are interested you can read more about this issue here.

I assume that Samsung put a 64bit processor in the Note 4 because it was on their roadmap to develop and use a 64bit OS. However, since the Note 4 launched with KitKat (a 32 bit OS), I guess they didn't manage to get the software ready in time even when the hardware was ready, so 32 bit was the fallback solution. I would fully imagine that the cost difference between 32bit and 64bit would be negligible. Certainly it would be cheaper to develop one CPU rather than two (since a 64bit CPU can happily run 32bit software). Basically Samsung were simply covering their bases and avoiding delays.

Samsung, I assume, didn't tell anyone this (if I am correct about the above) because 99% of people wouldn't care, while the other 1% could check since the information is public. I personally would not issue a press release, so I guess Samsung didn't either. Now, it could be that Lollypop (an OS with 64bit support) does make use of the CPU in the Note 4, but since there are so few apps that currently make use of long integers it is going to be hard to tell the difference.

Just keep in mind that all of the above is speculation ;)

Regards,
Eric.
Click to expand...
Well You really give a remarkable review.
Thank you.
Yeah , it may be.I assume
Actually,I don't know whether 64bit processors (SoC) are really making any remarkable difference but I have heard alot about it since Apple has first launched 64 bit cpu for iPhone 5S.
Yeah,Now I am running lollipop on my note 4 but I don't know if the cpu make full use of its 64 bit capacity.
Actually,I don't know much about that.
Still learning about that
 
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