23:42
Mr. Asim Rajput
Intel's newest platform lineup has the same memory requirements as P55 Express, yet some of the modules obtainable for it are rated differently. They discuss those differences on our quest to find the best performance/price in an 8 GB dual-channel kit.
They started getting e mail announcements of a new generation of LGA 1155-compatible RAM right around the same time as details of Intel's second-gen Core processors surfaced. The comic thing was that Intel's memory requirements didn't alter from Nehalem/Westmere to Sandy Bridge.
The former plat-forma documented maximum one.575 V limit remains, with the same wink-and-a-nod from engineers that up to one.65 V is safe. Indeed, the memory controller built in to Intel's new processors remained substantially similar to that of its predecessor. But as it turns out, the introduction of new kits wasn't entirely promotion hype!
All of Intel's DDR3 memory ratios correspond to information rate multiples of 266.6 MHz, including officially-supported information rates (DDR3-800, DDR3-1066, and DDR3-1333) as well as unofficial overclocked ratios (DDR3-1600, DDR3-1866, and DDR3-2133). Yet, lots of of the memory kits designed for LGA 1156-based platforms included oddball ratings like DDR3-2000 and DDR3-2200. In order to accomplish DDR3-2000 without overclocking the CPU core, the builder had to set the appropriate ratio for DDR3-1866, raise the base clock by 7.2%, and then reduce the CPU multiplier by 7.2%. With 7.2% multipliers and non-integer base clocks unavailable, an approximation had to be made. Some memory manufacturers even abused Intel's XMP know-how in an work to tell motherboards how to set these approximations automatically, though the builder still had to pick the appropriate XMP profile in the BIOS.
For example, yesterday's DDR3-2000 becomes DDR3-1866, occasionally at lower latency ratings to help offset the sacrificed information rate. Later, as lots of builders reported no performance gains or even compromises in stability from increasing the controller's voltage from one.60 to one.65 Vs, at least manufacturer responded by dropping its maximum rating to one.60 V.
Intels new platform does permit fractional base clock increases, but, as all of us know by now, does not support the aggressive base clock adjustments enabled by earlier platforms. An increase of 7.2%, for example, is simple to set, but it is usually unstable. By significantly limiting the range of obtainable base clock adjustments, Intel invalidated memory ratings that didn't correspond to appropriate ratios. They interviewed several memory manufacturers at CES and confirmed that transforming LGA 1156-specific memory kits in to LGA 1155-oriented models necessary nothing over a proper name, and proper SPD and XMP values.
The hardware itself didn't change; the labels (both internal and outside). That's fine with us though, since lots of the memory out there is already high-quality stuff. Even still, we'll still put it through the ringer in order to decide how far it can be pushed using Intel's new platform. Before they move on to specifics. The manufacturers have different specifications of their product.
They started getting e mail announcements of a new generation of LGA 1155-compatible RAM right around the same time as details of Intel's second-gen Core processors surfaced. The comic thing was that Intel's memory requirements didn't alter from Nehalem/Westmere to Sandy Bridge.
The former plat-forma documented maximum one.575 V limit remains, with the same wink-and-a-nod from engineers that up to one.65 V is safe. Indeed, the memory controller built in to Intel's new processors remained substantially similar to that of its predecessor. But as it turns out, the introduction of new kits wasn't entirely promotion hype!
All of Intel's DDR3 memory ratios correspond to information rate multiples of 266.6 MHz, including officially-supported information rates (DDR3-800, DDR3-1066, and DDR3-1333) as well as unofficial overclocked ratios (DDR3-1600, DDR3-1866, and DDR3-2133). Yet, lots of of the memory kits designed for LGA 1156-based platforms included oddball ratings like DDR3-2000 and DDR3-2200. In order to accomplish DDR3-2000 without overclocking the CPU core, the builder had to set the appropriate ratio for DDR3-1866, raise the base clock by 7.2%, and then reduce the CPU multiplier by 7.2%. With 7.2% multipliers and non-integer base clocks unavailable, an approximation had to be made. Some memory manufacturers even abused Intel's XMP know-how in an work to tell motherboards how to set these approximations automatically, though the builder still had to pick the appropriate XMP profile in the BIOS.
For example, yesterday's DDR3-2000 becomes DDR3-1866, occasionally at lower latency ratings to help offset the sacrificed information rate. Later, as lots of builders reported no performance gains or even compromises in stability from increasing the controller's voltage from one.60 to one.65 Vs, at least manufacturer responded by dropping its maximum rating to one.60 V.
Intels new platform does permit fractional base clock increases, but, as all of us know by now, does not support the aggressive base clock adjustments enabled by earlier platforms. An increase of 7.2%, for example, is simple to set, but it is usually unstable. By significantly limiting the range of obtainable base clock adjustments, Intel invalidated memory ratings that didn't correspond to appropriate ratios. They interviewed several memory manufacturers at CES and confirmed that transforming LGA 1156-specific memory kits in to LGA 1155-oriented models necessary nothing over a proper name, and proper SPD and XMP values.
The hardware itself didn't change; the labels (both internal and outside). That's fine with us though, since lots of the memory out there is already high-quality stuff. Even still, we'll still put it through the ringer in order to decide how far it can be pushed using Intel's new platform. Before they move on to specifics. The manufacturers have different specifications of their product.
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