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SilverStone Technology, a leading supplier of power supply units, has published the list of PSUs compatible with Intel Core i-series microprocessors based on Haswell micro-architecture. The list includes over 30 PSUs fully-compatible with next-generation microprocessors from Intel Corp.

It recently transpired that Intel Haswell's C6/C7 power states require a minimum load of 0.05A on the 12V2 rail, whereas many desktop PSUs just cannot provide that low current. Numerous older PSUs, which comply with ATX12V v2.3 design guidelines that only called for a minimum load of 0.5A on the CPU power rail, can be equipped with a less sophisticated internal feedback loop/protection that cannot supply 0.05A to CPU. As a result, unless C6/C7 power states are disabled in the BIOS, PCs with older/cheap PSUs may become unstable when processors enter these states. To make the matters worse, many power supply units do not report minimum currents supported by 12V2 rail. As a result, it is now hard for system makers and end-users to determine whether their PSUs are Intel Core i-series “Haswell” compatible.

Various PSUs from SilverStone Technology, which belong to different product series and price segments, fully support all power states of Intel Core “Haswell” central processing units.

The official list looks as follows:

 

Tags: SilverStone, Intel, Haswell, Core, 22nm, Shark Bay, Lynx Point

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