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Intel Core i7 and Core i5 LGA 1155 Sandy Bridge
by Damien Triolet, Franck Delattre, Guillaume Louel et Marc Prieur
Published on March 21, 2011

Average
Although individual app results are worth looking at, especially for CPUs with a high number of cores, we calculated a performance index based on all tests with the same weight for each test. An index of 100 was given to the Intel Core 2 Q8200.

By combining a higher clock and efficiency, the new LGA 1155 Core i5s and i7s show good progress on their LGA 1156 predecessors: the i5-2300 is thus 15% faster than the i5-750, and the difference increases to 20% if you compare the i7-880 and the i7-2600. This latest version is moreover snapping at the heels of the Core i7-970 in spite of the fact that it has six cores.

For the same price, the i7-2600 is 24% faster than the i7-870, and the i5-2500 26% up on the i5-760! This improvement in the price / performance ratio from Intel makes the situation at the top end harder than ever for AMD. On average, the i5-2300 ($177) can face up to the Phenom II X6 1100T ($265), which is however priced between the i5-2500 ($205) and 2600 ($294).

Of course this average hides different variations depending on usage and while the i7-2600 outdoes the X6 1100T whatever the application, the biggest AMD CPU is in front of the i5-2500 in four applications (3ds max, Cinema 4D, MinGW and Avidemux).

Hold the mouse over the graph to view the CPUs by performance.

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