Size of the storage memory and RAM can vary significantly. Duo processor with 3GB of DDR3 memory. It was cheaper to manufacture because of the separate, slower L2 cache memory. The type of memory or storage components also change historically. He left with a computer kit with 256 bytes of memory. SGX involves encryption by the CPU of a portion of memory. This includes some flash memory, like EEPROMs. Problems with concentration and memory may occur. It also featured 196 kilobytes of "powerful computer memory". Cognitive symptoms are mainly from deficits in attention, memory, and reaction time. Both his memory and image are frequently mentioned. Zen also has support for DDR4 memory. Use of returns an address to the allocated memory. It supports a variety of functions including emotion, behavior, motivation, long-term memory, and olfaction. The search for genes associated with normally varying memory continues.