On Wed, Nov 11, 2015 at 9:30 AM, joem joem@martindale-electric.co.uk wrote:
On Fri, 2015-11-06 at 18:03 +0100, Paul Boddie wrote:
Reading the datasheet, the device is capable of addressing 3GB RAM, though I am not sure any performance improvements are gained because the L1 cache is only 32k :(
32k data and 32k instruction cache. i hope that's per core! and a L2 512mb... that's not bad.
With 64 bit words to chew, the cache is only about 4K words. Down from the 8K words in a 32 bit ARM :( :( :(
weeelll.... at least it still runs 32-bit instructions. anyone know if gcc tends to output the lower-sized instructions as a preference where possible, only running into the newer 64-bit ones when it's strictly necessary?
Still, the graphics ought to be quicker with the hardware present in the chip and ability to move data in larger chunks.
yeah MALI400's a bit CPU-intensive, so quad-core should help.
performance/watt btw, Cortex A15 is down *15 percent* compared to a Cortex A7.
overall, though: this _is_ a $5 SoC. you have to expect some level of "lowliness" :)
l.