Energy-Efficient Intel Core i5, Core i7 ”Lynnfield” Processors Overclocked

In the run up for Intel’s Core i5 and Core i7 “Lynnfield” socket LGA-1156 processors, it was known that Intel will be trailing the launch with a few energy-efficient variants, that come with lower rated TDPs. Two of these, namely Core i5 750S, and Core i7 860S have made it to Coolaler’s lab for a quick check up. Unlike other energy-efficient variants from Intel, in the past, such as Core 2 Quad Q9550S, these parts feature lower clock-speeds compared to their standard counterparts.

The Core i5 750S comes with a clock speed of 2.40 GHz (19.0 x 133 MHz) with a Turbo Boost speed of 3.20 GHz, and the Core i7 860S runs at 2.53 GHz, with 3.46 GHz of Turbo Boost speed. Both processors as a result, have lower TDPs of 82W, compared to 95W on the Core i5 and Core i7 “Lynnfield” processors currently in the market. They are slated for Q1 2010. Coolaler used the Turbo Boost mode to overclock these chips. The Core i7 860S with its Turbo Boost multiplier of 26.0, reached 4.536 GHz (26 x 174.47 MHz, vCore at 1.32V), while the Core i5 750S reached 3.441 GHz (24 x 143.4 MHz, vCore at 1.32V). Both were seated on an ASUS P7P55D Deluxe motherboard, with one 2 GB DDR3 memory module.

Source: techPowerUp!