Even DRAM will be slowest on a random read/write 50% test (it has read-to-write and write-to-read penalties; admittedly these will be dwarfed by precharge/activ

Even DRAM will be slowest on a random read/write 50% test (it has read-to-write and write-to-read penalties; admittedly these will be dwarfed by precharge/activate penalties, but still, mixing reads and writes will make things worse.)