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

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 i7-660LM

► remove from comparison Intel 660LM

The Intel Core i7-660LM is a fast middle class low voltage dual core CPU for laptops and clocks (due to the Turbo Mode) from 2.27 to 3.07 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).  All features (like Virtualization VT-x and VT-d, Trusted Execution) of the Arrandale core are activated in the 660LM. Compared to the Core i7-620M, the 660LM is slower but more power efficient.

A feature of the new Core i7-660LM 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 i7-660LM 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 i3-380M and i5-450M. Beware, that some designs may not feature the Turbo Boost or due to small cooling solutions, the TurboBoost may not trigger very often. Therefore, the performance could be worse.

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 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).

ModelIntel Core i7-620LMIntel Core i7-660LM
SeriesIntel Core i7Intel Core i7
CodenameArrandaleArrandale
Series: Core i7 Arrandale
Intel Core i7-640M compare2.8 - 3.46 GHz2 / 4 cores4 MB L3
Intel Core i7-620M compare2.66 - 3.33 GHz2 / 4 cores4 MB L3
Intel Core i7-660LM2.27 - 3.07 GHz2 / 4 cores4 MB L3
Intel Core i7-640LM compare2.13 - 2.93 GHz2 / 4 cores4 MB L3
Intel Core i7-620LM « 2 - 2.8 GHz2 / 4 cores4 MB L3
Intel Core i7-680UM compare1.47 - 2.53 GHz2 / 4 cores4 MB L3
Intel Core i7-660UM compare1.33 - 2.4 GHz2 / 4 cores4 MB L3
Intel Core i7-640UM compare1.2 - 2.27 GHz2 / 4 cores4 MB L3
Intel Core i7-620UM compare1.06 - 2.13 GHz2 / 4 cores4 MB L3
Intel Core i7-640M compare2.8 - 3.46 GHz2 / 4 cores4 MB L3
Intel Core i7-620M compare2.66 - 3.33 GHz2 / 4 cores4 MB L3
Intel Core i7-660LM « 2.27 - 3.07 GHz2 / 4 cores4 MB L3
Intel Core i7-640LM compare2.13 - 2.93 GHz2 / 4 cores4 MB L3
Intel Core i7-620LM2 - 2.8 GHz2 / 4 cores4 MB L3
Intel Core i7-680UM compare1.47 - 2.53 GHz2 / 4 cores4 MB L3
Intel Core i7-660UM compare1.33 - 2.4 GHz2 / 4 cores4 MB L3
Intel Core i7-640UM compare1.2 - 2.27 GHz2 / 4 cores4 MB L3
Intel Core i7-620UM compare1.06 - 2.13 GHz2 / 4 cores4 MB L3
Clock2000 - 2800 MHz2267 - 3067 MHz
FSB25002500
L2 Cache512 KB512 KB
L3 Cache4 MB4 MB
Cores / Threads2 / 42 / 4
TDP25 Watt25 Watt
Transistors382+177 Million382+177 Million
Technology32 nm32 nm
Die Size81+144 mm281+177 mm2
max. Temp.105 °C105 °C
SocketBGA1288BGA1288
FeaturesTurbo Boost (2.8 GHz max), Hyper Threading, Enhanced Speedstep, integrated GMA HD 266-566 MHzTurbo Boost (2.93 GHz max), Hyper Threading, Enhanced Speedstep, integrated GMA HD 266-566MHz
Architecturex86x86
$300 U.S.$346 U.S.
Announced
ManufacturerIntel Core i7 620LMIntel Core i7 660LM

Benchmarks

Cinebench R10 - Cinebench R10 Rend. Single (32bit)
100%
1 620LM +
2937 Points (24%)
Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
100%
1 620LM +
5640 Points (6%)
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 → NAN% 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

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show all (including archived), 2023, 2022
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> Notebook / Laptop Reviews and News > Benchmarks / Tech > Processor Comparison - Head 2 Head
Redaktion, 2017-09- 8 (Update: 2017-09-11)