The Intel Core i7-640M is a high end dual core CPU for laptops and clocks (due to the Turbo Mode) from 2.8 to 3.46 GHz. The performance should still be faster than the old GMA 4500MHD. The integrated Intel Graphics Media Accelerator HD (GMA HD) graphics card is between 166-500 MHz (Turbo Boost) and therefore the base speed is clearly below the non low voltage versions. the Communications Suite test in the PCMark Vantage boosts up to 70% using AES in the faster Core i5-520M). Modern applications that support AES encoding can profit significantly using the new instructions (e.g. The 32nm cpu cores of the Westmere generation can also process some new instructions to accelerate AES encryptions. If the Turbo triggers, the CPU may be as fast, as a 2.6 GHz Core 2 Duo in single threaded applications. Still the Turbo Boost may not trigger very often (sometimes it is even not activated in the BIOS) and therefore the maximum of 2.53 GHz could not be important. ![]() ![]() ![]() Both are on a separate die that is still manufactured in 45nm whereas the CPU die is already manufactured in the new 32nm process.ĭue to the integrated memory controller, the HyperThreading and Turbo Boost, the Core i7-680UM is faster than a similar clocked Core 2 Duo (1.4 GHz) in all (us known) applications and benchmarks. A feature of the new Core i7-680UM is the integrated graphics card (called Intel HD Graphics) and memory controller.
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