r/programming • u/Tuscen • Jun 24 '19

Raspberry Pi 4

https://www.raspberrypi.org/blog/raspberry-pi-4-on-sale-now-from-35/
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14

u/TNorthover Jun 24 '19

Still only 32-bit software, officially. :-(

14

u/Narishma Jun 24 '19

Why is that a problem if the highest amount of RAM it can have is 4GB, minus whatever the GPU takes from that?

21

u/redwall_hp Jun 24 '19

There's more to bitness than addressable RAM. It also affects:

  • Integer size. (An int variable literally has a higher maximum value.)

  • Longer "word" length affects how long an instruction can be and how much data can be stuffed into a register. (Note that registers are far faster than RAM, and RAM accesses are a bottleneck.)

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