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  2. Virtual memory compression - Wikipedia

    en.wikipedia.org/wiki/Virtual_memory_compression

    By reducing the I/O activity caused by paging requests, virtual memory compression can produce overall performance improvements. The degree of performance improvement depends on a variety of factors, including the availability of any compression co-processors, spare bandwidth on the CPU, speed of the I/O channel, speed of the physical memory, and the compressibility of the physical memory ...

  3. Virtual memory - Wikipedia

    en.wikipedia.org/wiki/Virtual_memory

    Virtual memory combines active RAM and inactive memory on DASD [a] to form a large range of contiguous addresses.. In computing, virtual memory, or virtual storage, [b] is a memory management technique that provides an "idealized abstraction of the storage resources that are actually available on a given machine" [3] which "creates the illusion to users of a very large (main) memory".

  4. iPhone 11 Pro - Wikipedia

    en.wikipedia.org/wiki/IPhone_11_Pro

    The iPhone 11 Pro has a 5.85 inch (149 mm) (marketed as 5.8-inch (15 cm)) OLED display with a resolution of 2436 × 1125 pixels (2.7 megapixels), while the iPhone 11 Pro Max has a larger 6.46 inch (164 mm) (marketed as 6.5-inch (17 cm)) OLED display with a resolution of 2688 × 1242 pixels (3.3 megapixels) which both have a pixel density of 458 ...

  5. Memory virtualization - Wikipedia

    en.wikipedia.org/wiki/Memory_virtualization

    Virtual memory systems abstract between physical RAM and virtual addresses, assigning virtual memory addresses both to physical RAM and to disk-based storage, expanding addressable memory, but at the cost of speed. NUMA and SMP architectures optimize memory allocation within multi-processor systems. While these technologies dynamically manage ...

  6. iPhone 11 - Wikipedia

    en.wikipedia.org/wiki/IPhone_11

    The iPhone 11 is a smartphone developed and marketed by Apple.It is the thirteenth generation of iPhone, succeeding the iPhone XR, and was unveiled on September 10, 2019, alongside the higher-end iPhone 11 Pro at the Steve Jobs Theater in Apple Park, Cupertino, by Apple CEO Tim Cook.

  7. LPDDR - Wikipedia

    en.wikipedia.org/wiki/LPDDR

    Products using LPDDR3 include the 2013 MacBook Air, iPhone 5S, iPhone 6, Nexus 10, Samsung Galaxy S4 (GT-I9500) and Microsoft Surface Pro 3 and 4. [10] LPDDR3 went mainstream in 2013, running at 800 MHz DDR (1600 MT/s), offering bandwidth comparable to PC3-12800 notebook memory in 2011 (12.8 GB/s of bandwidth). [ 11 ]

  8. List of iPhone models - Wikipedia

    en.wikipedia.org/wiki/List_of_iPhone_models

    The iPhone, developed by Apple Inc., is a line of smartphones that combine a mobile phone, digital camera, personal computer, and music player into one device. Introduced by then-CEO Steve Jobs on January 9, 2007, the iPhone revolutionized the mobile phone industry with its multi-touch interface and lack of physical keyboard.

  9. Physical Address Extension - Wikipedia

    en.wikipedia.org/wiki/Physical_Address_Extension

    This means that 48 bits of virtual page number are translated, giving a virtual address space of up to 256 TB. For some processors, a mode can be enabled with a fifth table, the 512-entry page-map level 5 table; this means that 57 bits of virtual page number are translated, giving a virtual address space of up to 128 PB.