by Anton Shilov
05/23/2013 | 11:20 PM
Thermaltake, a leading supplier of computer chassis, thermal solutions and power supply units, announced this week that the majority of its advanced power supply units are fully compatible with Intel Core i-series “Haswell” central processing units. All current high-end and mainstream PSUs from Thermaltake are already prepared for the new Intel processors to deliver stable voltages to achieve maximum energy savings.
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.
The list of Thermaltake PSUs compatible with Intel Core i-series 4000-family “Haswell” microprocessors looks as follows: