Orange Pi R1 Plus LTS (RK3328) - cache

Each processor has 32K of I-cache and 32K of D-cache.
There is also a 256K of L2 unified cache.
Main memory is 1G. Compare this to the RK3399 which has two clusters. It also has a 4-core cluster of Cortex A53 processors, but it also has a 2-core cluster of Cortex A72 processors

Each A53 processor has 32K of I-cache and 32K of D-cache.
The L2 unified cache is now 512K for this cluster.
Main memory is 4G.

Each A72 processor has 48K of I-cache and 32K of D-cache.
The L2 unified cache for the pair of A72 cores is 1024K.

The clock rates for the two core types are different. The A53 will run at up to 1.5 Ghz and the A72 up to 2.0 Ghz. This may get pretty hot. IA read about people running with 1.4/1.6 Ghz happily.