Intel Core i7-620LM vs Intel Core i7-620M

Intel Core i7-620LM

► remove 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 i7-620M

► remove Intel 620M

The Intel Core i7-620M is a high end dual core CPU for laptops and clocks (due to the Turbo Mode) from 2.66 to 3.33 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). Therefore, the i7-620M is related to the other i5 and i3 dual core CPUs and not the quad-core i7 CPUs.

A feature of the new Core i7-620M is the integrated graphics card called Intel HD Graphics (GMA HD) 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.

The performance of the Core i7-620M is on average above the former fastest mobile dual core CPU, the Core 2 Duo T9900 / X9100. In our tests, just the single threaded rendering test in the Cinebench R10 benchmark scored less points. Even the mobile Core i7-720QM quad core is slower in many cases. 

The 32nm cpu cores of the Westmere generation can also process some new instructions to accelerate AES encryptions. Compared to the slower i5 versions without AES features, the 3DMark Vantage Communication Score showed a significant increase with AES enabled CPUs.

The integrated Intel Graphics Media Accelerator HD (GMA HD) graphics card is clocked with 500-733 MHz and performs clearly faster than the old GMA 4500MHD. A GeForce 9400M (ION) should still be a bit faster (especially as Nvidia and ATI cards have a better driver support than Intel up to now).

The power consumption of 35 Watt TDP (max.) counts for the whole package and therefore it is clearly better than the 35 Watt TDP of the Core 2 Duo T-series (CPU alone).

The Core i7-620M should not be mistaken with the similar named but slower low voltage and ultra low voltage chips Core i7-620LM (2.13-2.93 GHZ, 25W) and Core i7-620UM (1.2-2.26 GHz, 18 W).

Intel Core i7-620LMIntel Core i7-620M
Intel Core i7Intel Core i7
ArrandaleArrandale
: Core i7 Arrandale
Intel Core i7-640M (compare)2800 - 3460 MHz2 / 44 MB
Intel Core i7-620M2660 - 3333 MHz2 / 44 MB
Intel Core i7-660LM (compare)2267 - 3067 MHz2 / 44 MB
Intel Core i7-640LM (compare)2130 - 2933 MHz2 / 44 MB
» Intel Core i7-620LM2000 - 2800 MHz2 / 44 MB
Intel Core i7-680UM (compare)1467 - 2533 MHz2 / 44 MB
Intel Core i7-660UM (compare)1333 - 2400 MHz2 / 44 MB
Intel Core i7-640UM (compare)1200 - 2266 MHz2 / 44 MB
Intel Core i7-620UM (compare)1060 - 2133 MHz2 / 44 MB
Intel Core i7-640M (compare)2800 - 3460 MHz2 / 44 MB
» Intel Core i7-620M2660 - 3333 MHz2 / 44 MB
Intel Core i7-660LM (compare)2267 - 3067 MHz2 / 44 MB
Intel Core i7-640LM (compare)2130 - 2933 MHz2 / 44 MB
Intel Core i7-620LM2000 - 2800 MHz2 / 44 MB
Intel Core i7-680UM (compare)1467 - 2533 MHz2 / 44 MB
Intel Core i7-660UM (compare)1333 - 2400 MHz2 / 44 MB
Intel Core i7-640UM (compare)1200 - 2266 MHz2 / 44 MB
Intel Core i7-620UM (compare)1060 - 2133 MHz2 / 44 MB
2000 - 2800 MHz2660 - 3333 MHz
25002500
512 KB512 KB
4 MB4 MB
2 / 42 / 4
25 35
382+177 382+177
32 32
81+144 mm281+114 mm2
105 °C105 °C
BGA1288BGA1288, PGA988
Turbo Boost (2.8 GHz max), Hyper Threading, Enhanced Speedstep, integrated GMA HD 266-566 MHzTurbo Boost, Hyper Threading, Enhanced Speedstep, integrierte GMA HD 500-733MHz, Dual Channel DDR3 memory controller
$300 U.S.$332 U.S.
Intel Core i7 620LMIntel Core i7 620M

Cinebench R11.5 - CPU Multi 64Bit
100%
620M +
2.4 Points (5%)
Cinebench R10 - Rendering Single 32Bit
2937 Points (32%)
118%
620M +
min: 3346     avg: 3504.1     median: 3473 (38%)     max: 4213 Points
Cinebench R10 - Rendering Multiple CPUs 32Bit
5640 Points (9%)
136%
620M +
min: 6981     avg: 7559.7     median: 7657 (12%)     max: 8323 Points
Cinebench R10 - Rendering Multiple CPUs 64Bit
100%
620M +
min: 6810     avg: 8714.5     median: 9046 (12%)     max: 9399 Points
Cinebench R10 - Rendering Single CPUs 64Bit
100%
620M +
min: 3440     avg: 4112     median: 4249 (41%)     max: 4422 Points
wPrime 2.0x - 1024m *
848.1 seconds (10%)
103%
620M +
min: 524     avg: 813.7     median: 587 (7%)     max: 1525 seconds
wPrime 2.0x - 32m *
26.5 seconds (5%)
102%
620M +
min: 16     avg: 22.4     median: 18 (4%)     max: 39 seconds
3DMark 06 - CPU
2358 Points (16%)
129%
620M +
min: 2739     avg: 3019.5     median: 3044 (20%)     max: 3200 Points
Super Pi mod 1.5 XS 1M *
16.2 Seconds (3%)
101%
620M +
13.1 Seconds (3%)
Super Pi mod 1.5 XS 2M *
38.1 Seconds (2%)
100%
620M +
min: 32     avg: 32.7     median: 32 (1%)     max: 34 Seconds
Super Pi Mod 1.5 XS 32M *
920 Seconds (4%)
101%
620M +
min: 768     avg: 785.6     median: 784 (3%)     max: 804 Seconds
SiSoft Sandra Dhrystone (MIPS)
28100 MIPS (13%)
140%
620M +
min: 35248     avg: 39037.6     median: 39280 (19%)     max: 42170 MIPS
SiSoft Sandra Whetstone (MFLOPS)
24620 MFLOPS (19%)
113%
620M +
min: 26510     avg: 28839.2     median: 27867 (21%)     max: 32430 MFLOPS
PCMark 05 - Standard 1024x768
100%
620M +
6832 Points (43%)
Windows 7 Experience Index - Processor
100%
620M +
6.8 points (98%)
3DMark Vantage - P CPU no PhysX 1280x1024
100%
620M +
min: 7128     avg: 8391.5     median: 8645 (12%)     max: 8840 Points

Average Benchmarks Intel Core i7-620LM → 100%

Average Benchmarks Intel Core i7-620M → 109%

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* Smaller numbers mean a higher performance
1 This benchmark is not used for the average calculation

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