The A64 seems to be just a bunch of 64-bit Cortex-A53 cores in a 32-bit SoC and the whole '64-bit thing' is more or less marketing and no technical improvement.īut hey, people buy numbers: They need 64 bit since. Allwinner A64 packs four Cortex-A53 CPU cores that implement the latest 64-bit ARMv8 architecture, delivering significantly higher system performance with less power consumption. According to Allwinner's PM A64/H64/R18 (all the same more or less) are made in a 40nm process (so the linux-sunxi wiki is still wrong) which might be responsible for the low clockspeeds possible (1152 MHz max.). Allwinner A64 is a quad-core 64-bit tablet processor based on ARM Cortex-A53 architecture, targeting at entry-level 64-bit tablet market. And if you don't move both kernel and userspace from ARMv7 to ARMv8 code you won't get that much more performance either. While you can benefit from a huge virtual address space the useable physical address space doesn't exceed the 'magical' 64-bit border of 4 GB. OLINUXINO is Open Source software and Open Source Hardware, low cost Linux Industrial grade single board computer with GPIOs capable to operate -25+85C. It's 3 GB: (and this means unless someone manufactures 12gb DDR3/LPDDR3 modules you will be limited to 2 GB).īut that seems to be a common problem with all those cheap Cortex-A53 ARMv8 implementations. I heard people mention this SoC only supports max 2 GB RAM, might just be rumours do you have any datasheet etc to confirm it can do that?
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