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Intel Core i7-680UM vs Intel Core i7-620LM vs Intel Core i7-660UM

Intel Core i7-680UM

► remove from comparison Intel 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.

Intel Core i7-620LM

► remove from comparison Intel 620LM

The Intel Core i7-620LM is a fast middle class low voltage dual core CPU for laptops and clocks (due to the Turbo Mode) from 2.0 to 2.8 GHz. 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 i7-620M, the 620LM is slower but more power efficient.

A feature of the new Core i7-620LM 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 i7-620LM is faster than a similar clocked Core 2 Duo in all (us known) applications and benchmarks. The performance should be somewhere on the level of the Core i5-350M. Beware, that some laptop designs may not feature the Turbo Boost. Therefore, the CPU may be slower than the 350M.

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 show a significant performance boost 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 266-566 MHz (Turbo Boost) and therefore the base speed is clearly below the non low voltage versions. The performance should

still be a lot faster than the old GMA 4500MHD. The power consumption of 25 Watt TDP (max.) counts for the whole package and therefore it is clearly better than the 25 Watt TDP of the Core 2 Duo P-series (CPU alone).

Intel Core i7-660UM

► remove from comparison Intel 660UM

The Intel Core i7-660UM is a Ultra Low Voltage dual-core processor for small and light laptops. It is clocked with 1.33 - 2.4 GHz (if Turbo Boost is enabled). The 660UM offers the highest TurboBoost of all 1.3 GHz clocked ULV processors (i3-380UM, i5-470UM, i5-560UM). 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 i7-620M and the 640LM, the 660UM is much slower (due to the lower clock rate) but more power efficient.

A feature of the new Core i7-660UM 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 i7-660UM is faster than a similar clocked Core 2 Duo (1.33 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 2.4 GHz is not very important. All in all the I7-660UM should be faster than a Core 2 Duo SL9300 (1.6GHz).

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.

ModelIntel Core i7-680UMIntel Core i7-620LMIntel Core i7-660UM
SeriesIntel Core i7Intel Core i7Intel Core i7
CodenameArrandaleArrandaleArrandale
Series: Core i7 Arrandale
Intel Core i7-640M2.8 - 3.46 GHz2 / 4 cores4 MB L3
Intel Core i7-620M2.66 - 3.33 GHz2 / 4 cores4 MB L3
Intel Core i7-660LM2.27 - 3.07 GHz2 / 4 cores4 MB L3
Intel Core i7-640LM2.13 - 2.93 GHz2 / 4 cores4 MB L3
Intel Core i7-620LM2 - 2.8 GHz2 / 4 cores4 MB L3
Intel Core i7-680UM « 1.47 - 2.53 GHz2 / 4 cores4 MB L3
Intel Core i7-660UM1.33 - 2.4 GHz2 / 4 cores4 MB L3
Intel Core i7-640UM1.2 - 2.27 GHz2 / 4 cores4 MB L3
Intel Core i7-620UM1.06 - 2.13 GHz2 / 4 cores4 MB L3
Intel Core i7-640M2.8 - 3.46 GHz2 / 4 cores4 MB L3
Intel Core i7-620M2.66 - 3.33 GHz2 / 4 cores4 MB L3
Intel Core i7-660LM2.27 - 3.07 GHz2 / 4 cores4 MB L3
Intel Core i7-640LM2.13 - 2.93 GHz2 / 4 cores4 MB L3
Intel Core i7-620LM « 2 - 2.8 GHz2 / 4 cores4 MB L3
Intel Core i7-680UM1.47 - 2.53 GHz2 / 4 cores4 MB L3
Intel Core i7-660UM1.33 - 2.4 GHz2 / 4 cores4 MB L3
Intel Core i7-640UM1.2 - 2.27 GHz2 / 4 cores4 MB L3
Intel Core i7-620UM1.06 - 2.13 GHz2 / 4 cores4 MB L3
Intel Core i7-640M2.8 - 3.46 GHz2 / 4 cores4 MB L3
Intel Core i7-620M2.66 - 3.33 GHz2 / 4 cores4 MB L3
Intel Core i7-660LM2.27 - 3.07 GHz2 / 4 cores4 MB L3
Intel Core i7-640LM2.13 - 2.93 GHz2 / 4 cores4 MB L3
Intel Core i7-620LM2 - 2.8 GHz2 / 4 cores4 MB L3
Intel Core i7-680UM1.47 - 2.53 GHz2 / 4 cores4 MB L3
Intel Core i7-660UM « 1.33 - 2.4 GHz2 / 4 cores4 MB L3
Intel Core i7-640UM1.2 - 2.27 GHz2 / 4 cores4 MB L3
Intel Core i7-620UM1.06 - 2.13 GHz2 / 4 cores4 MB L3
Clock1467 - 2533 MHz2000 - 2800 MHz1333 - 2400 MHz
FSB250025002500
L2 Cache512 KB512 KB512 KB
L3 Cache4 MB4 MB4 MB
Cores / Threads2 / 42 / 42 / 4
TDP18 Watt25 Watt18 Watt
Transistors382+177 Million382+177 Million382+177 Million
Technology32 nm32 nm32 nm
Die Size81+144 mm281+144 mm281+144 mm2
max. Temp.105 °C105 °C105 °C
SocketBGA1288BGA1288BGA1288
FeaturesTurbo Boost (2.40 GHz max), Hyper Threading, Enhanced Speedstep, integrated GMA HD 166-500MHzTurbo Boost (2.8 GHz max), Hyper Threading, Enhanced Speedstep, integrated GMA HD 266-566 MHzTurbo Boost (2.40 GHz max), Hyper Threading, Enhanced Speedstep, integrated GMA HD 166-500MHz
Architecturex86x86x86
$317 U.S.$300 U.S.
Announced
Manufacturerark.intel.comark.intel.com

Benchmarks

Cinebench R10 - Cinebench R10 Rend. Single (32bit)
100%
1 620LM +
2937 Points (18%)
Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
100%
1 620LM +
5640 Points (4%)
wPrime 2.10 - wPrime 2.0 1024m *
100%
1 620LM +
848 s (10%)
wPrime 2.10 - wPrime 2.0 32m *
100%
1 620LM +
26.5 s (5%)
3DMark 06 - CPU - 3DMark 06 - CPU
100%
1 620LM +
2358 Points (5%)
Super Pi mod 1.5 XS 1M - Super Pi mod 1.5 XS 1M *
100%
1 620LM +
16.2 s (3%)
Super Pi mod 1.5 XS 2M - Super Pi mod 1.5 XS 2M *
100%
1 620LM +
38.1 s (2%)
Super Pi Mod 1.5 XS 32M - Super Pi mod 1.5 XS 32M *
100%
1 620LM +
920 s (4%)
SiSoft Sandra Dhrystone (MIPS) - SiSoft Sandra Dhrystone (MIPS)
100%
1 620LM +
28100 MIPS (13%)
SiSoft Sandra Whetstone (MFLOPS) - SiSoft Sandra Whetstone (MFLOPS)
100%
1 620LM +
24620 MFLOPS (19%)

Average Benchmarks Intel Core i7-620LM → 0% n=

- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance
1 This benchmark is not used for the average calculation

v1.26
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Redaktion, 2017-09- 8 (Update: 2023-07- 1)