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  2. Lenovo Essential laptops - Wikipedia

    en.wikipedia.org/wiki/Lenovo_Essential_laptops

    Released in 2011, the B570 laptop received a positive review from CNET, with the reviewer saying, “For such a modestly priced laptop, the Lenovo Essential B570 really does punch above its weight.” [18] The pros of the laptop were listed as the low price, good performance, design, and display. The only con listed by CNET was the low storage ...

  3. Non-uniform memory access - Wikipedia

    en.wikipedia.org/wiki/Non-uniform_memory_access

    Non-uniform memory access (NUMA) is a computer memory design used in multiprocessing, where the memory access time depends on the memory location relative to the processor. Under NUMA, a processor can access its own local memory faster than non-local memory (memory local to another processor or memory shared between processors). [ 1 ]

  4. ThinkPad L series - Wikipedia

    en.wikipedia.org/wiki/ThinkPad_L_series

    The ThinkPad L series is a line of notebook computers from Lenovo as part of the ThinkPad family. As opposed to the ThinkPad T and X series, the L series has an added focus on economy and value; [1] they are the entry-level range for enterprise use, [2] and are also used by students. [3]

  5. Space–time tradeoff - Wikipedia

    en.wikipedia.org/wiki/Space–time_tradeoff

    A space–time trade off can be applied to the problem of data storage. If data is stored uncompressed, it takes more space but access takes less time than if the data were stored compressed (since compressing the data reduces the amount of space it takes, but it takes time to run the decompression algorithm). Depending on the particular ...

  6. Fragmentation (computing) - Wikipedia

    en.wikipedia.org/wiki/Fragmentation_(computing)

    In computer storage, fragmentation is a phenomenon in which storage space, such as computer memory or a hard drive, is used inefficiently, reducing capacity or performance and often both. The exact consequences of fragmentation depend on the specific system of storage allocation in use and the particular form of fragmentation.

  7. Computer performance - Wikipedia

    en.wikipedia.org/wiki/Computer_performance

    In computing, computer performance is the amount of useful work accomplished by a computer system. Outside of specific contexts, computer performance is estimated in terms of accuracy, efficiency and speed of executing computer program instructions. When it comes to high computer performance, one or more of the following factors might be involved:

  8. Density (computer storage) - Wikipedia

    en.wikipedia.org/wiki/Density_(computer_storage)

    Modern DRAM chips had operational speeds on the order of 10 ns or less. A less obvious effect is that as density improves, the number of DIMMs needed to supply any particular amount of memory decreases, which in turn means less DIMMs overall in any particular computer. This often leads to improved performance as well, as there is less bus traffic.

  9. Skylake (microarchitecture) - Wikipedia

    en.wikipedia.org/wiki/Skylake_(microarchitecture)

    Skylake's launch and sales lifespan occur at the same time as the ongoing SDRAM market transition, with DDR3 SDRAM memory gradually being replaced by DDR4 SDRAM. Rather than working exclusively with DDR4, the Skylake microarchitecture remains backward compatible by interoperating with both types of memory.