Intel Core i7-680UM
The Intel Core i7-680UM is a Ultra Low Voltage dual-core processor for small and light laptops. It is clocked with 1.47 - 2.5 GHz (if Turbo Boost is enabled). The 680UM is the fastest ULV CPU in Q4 2010. Each core is based on the Nehalem (Westmere) micro-architecture. Hyperthreading enables the Dual Core CPU to handle 4 threads at once (for a better usage of the pipeline). Compared to the Core i7-640M and the i7 640LM CPUs, the 680UM is much slower (due to the lower clock rate) but more power efficient.
A feature of the new Core i7-680UM is the integrated graphics card (called Intel HD Graphics) and memory controller. Both are on a separate die that is still manufactured in 45nm whereas the CPU die is already manufactured in the new 32nm process.
Due 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. 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. If the Turbo triggers, the CPU may be as fast, as a 2.6 GHz Core 2 Duo in single threaded applications.
The 32nm cpu cores of the Westmere generation can also process some new instructions to accelerate AES encryptions. Modern applications that support AES encoding can profit significantly using the new instructions (e.g. the Communications Suite test in the PCMark Vantage boosts up to 70% using AES in the faster Core i5-520M).
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 performance should still be faster than the old GMA 4500MHD.
|Series||Intel Core i7|
Series: Core i7 Arrandale
|Clock Rate||1467 - 2533 MHz|
|Front Side Bus||2500|
|Level 2 Cache||512 KB|
|Level 3 Cache||4 MB|
|Number of Cores / Threads||2 / 4|
|Power Consumption (TDP = Thermal Design Power)||18 Watt|
|Transistor Count||382+177 Million|
|Manufacturing Technology||32 nm|
|Die Size||81+144 mm2|
|Max. Temperature||105 °C|
|Features||Turbo Boost (2.40 GHz max), Hyper Threading, Enhanced Speedstep, integrated GMA HD 166-500MHz|
|64 Bit||64 Bit support|
|Starting Price||$317 U.S.|
|Product Link (external)||ark.intel.com|
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance
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Reviews for the Intel Core i7-680UM processor
Acer Aspire TimelineX AS1830T-3721: Intel Graphics Media Accelerator (GMA) HD Graphics, 11.60", 1.4 kg
External Review » Acer Aspire TimelineX AS1830T-3721
Acer Aspire 1830T-68U118 : Intel Graphics Media Accelerator (GMA) HD Graphics, 11.60", 1.4 kg
External Review » Acer Aspire 1830T-68U118