Amd k10 x4 955 full#
Amd k10 x4 955 update#
This issue is not resolvable via a BIOS update however, users of AM2 and AM2+ motherboards can still use Phenom II processors excluding the 125 Watt variants. This is caused by the processor itself: when it detects that the motherboard does not supply dual power planes, the chip locks its multiplier to 4x. at 800 MHz), clock and multiplier locked are symptoms of this incompatibility. Processor running below its nominal speed (i.e.
It's supported by default in all native AM3 mainboards, however not in most AM2+ mainboards, even those advertised as "AM3 optimized" or "AM3 ready". Some top-level AM3 processors (x945 125W, x955 and x965) require a special power-supply feature, often called "dual power-plane". The flagship AMD Phenom II X6 1100T shifts 3.3GHz to 3.7GHz. In turn, when the application demands more than half of the cores, the processor will run on standard clock rate and with all cores enabled. When not all cores are needed, the processor will automatically overclock up to half of the cores by up to 500 MHz, leaving the other half idle. "Thuban" and "Zosma" Phenom II processors support AMD's Turbo Core overclocking performance-boost technology. The dual-spec memory controller also gives motherboard manufacturers and system builders the option of pairing AM3 with DDR2, as compared to competing chips from Intel which require DDR3. ĪMD claims that this behaviour is due to the BIOS, not the memory controller several board manufacturers have addressed the issue with a BIOS update. However, similar to the way the original Phenom handled DDR2-1066, current Phenom II platforms limit the usage of DDR3-1333 to one DIMM per channel otherwise, the DIMMs are under clocked to DDR3-1066.
Amd k10 x4 955 upgrade#
In addition to the Phenom II's pin compatibility, the AM3 memory controller supports both DDR2 and DDR3 memory (up to DDR2-1066 and DDR3-1333), allowing existing AM2+ users to upgrade their CPU without changing the motherboard or memory. Socket AM3 versions of the Phenom II are backwards-compatible with Socket AM2+, though this is contingent on motherboard manufacturers supplying BIOS updates. Socket AM2+ versions of the Phenom II (920, 940) lack forward-compatibility with Socket AM3. Due to the nature of this feature, it reduces the effectiveness of overclocking the CPU and RAM, but also decreases power consumption and heat output. : 6 This feature can be disabled through BIOS options on most motherboards, which allows for customization and overclocking.
Amd k10 x4 955 windows#
AMD implemented this to address the mishandling of threads by Windows Vista, which can cause single-threaded applications to run on a core that idles at half its clock rate. : 9 In another change from the original Phenom, Cool'n'Quiet applies to the processor as a whole, rather than on a per-core basis. The Phenom II triples the shared 元 cache size from 2MB (in the original Phenom line) to 6MB, : 3 leading to benchmark performance gains as high as 30%.
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