Intel Haswell and energy efficiency

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POSTER: computer news   ||   INTEL HASWELL AND ENERGY EFFICIENCY	DATE:2012-10-07
Next year, Intel will release Haswell processors.  These solutions are aimed at countering with developments of holding ARM, advancing architecture of the same name.  The technology implemented in Haswell, should help Intel to gain  in the mobile space, where the position of ARM is traditionally strong.  Thus, the new Intel microarchitecture will focus on energy efficiency. Seven years ago, Intel demonstrated the product integration CPU and Northbridge.  Also, you can see that on the substrate are placed crystal voltage regulator: This solution enables to adjust processor voltage and eliminates from the motherboard unnecessary VRM components .  In the same year, Intel demonstrated a prototype motherboard without chip north bridge and voltage converter in the usual way: The decision has broad prospects in the mobile.  In particular, the removal of VRM components will make the motherboard smaller, which will free up more space for other important things (for example, a higher-capacity battery). Also in Haswell will be a mechanism of active standby S0ix, which was borrowed from Atom processors .  In this mode the CPU uses much less energy, but retains the ability to perform some trivial task.  For example, such a regime in ARM processor enables smartphones and tablets based on them to maintain contact with the outside world (to accept mail messages, check for updates in the network) during the sleep and instantly wake up when it is necessary for the user. Another way to save energy technology will be a Panel Self Refresh (PSR).  The idea is simple: even if the information that is displayed on the screen does not change (for example, text or static image), the processor and graphics card still have 60 times per second, to prepare a new frame, which is displayed on the monitor.   PSR involves adding a selection of memory, which is used to store copies of the frame buffer.  If the screen does not make any action, the displayed frame of the copy buffer, and the computer at this time can be set to one of the available modes S0ix.  Curiously, PSR technology was demonstrated in IDF 2011: Third means energy savings in Haswell microarchitecture will power control unit (PCU).  This task will be to disable unused parts of the processor.  Intel issued a graph showing the power consumption of Haswell in comparison with models of the three previous generations: Finally, Intel finalized lithographic technology on which will be produced Haswell architecture.   All these tricks will produce Intel Haswell processors with a TDP less than 10 watts.  This opens the way for solutions not only in ultra-thin laptops, but in tablet computers.  Moreover, a processor with a TDP of 8 watts will able to pass the test Unigen Heaven: Haswell will provide approximately 5-15% better performance than Ivy Bridge at the same frequency. Considerable work has been done by Intel engineers to reduce power consumption and increase the performance of integrated graphics core.   Related Products :

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