Intel Core i7-620M vs Intel Core i7-640M

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 i7-640M

► remove Intel 640M

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. 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 i7-640M is related to the other i5 and i3 dual core CPUs and not the quad-core i7 CPUs.

A feature of the new Core i7-640M 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 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 i7-640M should not be mistaken with the similar named but slower low voltage Core i7-640LM and Core i7-640UM models.

Intel Core i7-620MIntel Core i7-640M
Intel Core i7Intel Core i7
ArrandaleArrandale
: Core i7 Arrandale
Intel Core i7-640M2800 - 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 i7-620LM (compare)2000 - 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 i7-640M2800 - 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 i7-620LM (compare)2000 - 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
2660 - 3333 MHz2800 - 3460 MHz
25002500
512 KB512 KB
4 MB4 MB
2 / 42 / 4
35 35
382+177 382+177
32 32
81+114 mm281+114 mm2
105 °C105 °C
BGA1288, PGA988BGA1288, PGA988
Turbo Boost, Hyper Threading, Enhanced Speedstep, integrierte GMA HD 500-733MHz, Dual Channel DDR3 memory controllerTurbo Boost, Hyper Threading, Enhanced Speedstep, integrierte GMA HD 500-733MHz, Dual Channel DDR3 memory controller
$332 U.S.$346 U.S.
Intel Core i7 620MIntel Core i7 640M

Cinebench R11.5 - CPU Multi 64Bit
100%
620M +
2.4 Points (5%)
100%
640M +
2.5 Points (6%)
Cinebench R11.5 - CPU Single 64Bit
100%
640M +
1.1 Points (53%)
Cinebench R10 - Rendering Single 32Bit
100%
620M +
min: 3346     avg: 3504.1     median: 3473 (38%)     max: 4213 Points
107%
640M +
min: 3597     avg: 3711     median: 3707 (41%)     max: 3792 Points
Cinebench R10 - Rendering Multiple CPUs 32Bit
100%
620M +
min: 6981     avg: 7559.7     median: 7657 (12%)     max: 8323 Points
103%
640M +
min: 7765     avg: 7986.9     median: 7906 (12%)     max: 8349 Points
Cinebench R10 - Rendering Multiple CPUs 64Bit
100%
620M +
min: 6810     avg: 8714.5     median: 9046 (12%)     max: 9399 Points
104%
640M +
min: 9096     avg: 9533     median: 9430 (12%)     max: 10027 Points
Cinebench R10 - Rendering Single CPUs 64Bit
100%
620M +
min: 3440     avg: 4112     median: 4249 (41%)     max: 4422 Points
108%
640M +
min: 4455     avg: 4562.5     median: 4573 (44%)     max: 4606 Points
wPrime 2.0x - 1024m *
100%
620M +
min: 524     avg: 813.7     median: 587 (7%)     max: 1525 seconds
100%
640M +
min: 523     avg: 708.4     median: 568 (7%)     max: 1173 seconds
wPrime 2.0x - 32m *
100%
620M +
min: 16     avg: 22.4     median: 18 (4%)     max: 39 seconds
100%
640M +
min: 16     avg: 22.1     median: 17 (3%)     max: 36 seconds
WinRAR - Result
100%
640M +
1763 KB/s (21%)
TrueCrypt - Serpent Mean 100MB
0.1 GB/s (7%)
TrueCrypt - Twofish Mean 100MB
0.2 GB/s (8%)
TrueCrypt - AES Mean 100MB
100%
640M +
1.3 GB/s (7%)
3DMark 06 - CPU
100%
620M +
min: 2739     avg: 3019.5     median: 3044 (20%)     max: 3200 Points
109%
640M +
min: 3094     avg: 3284.6     median: 3307 (22%)     max: 3442 Points
Super Pi mod 1.5 XS 1M *
100%
620M +
13.1 Seconds (3%)
100%
640M +
min: 12     avg: 13.1     median: 12 (3%)     max: 18 Seconds
Super Pi mod 1.5 XS 2M *
100%
620M +
min: 32     avg: 32.7     median: 32 (1%)     max: 34 Seconds
100%
640M +
min: 30     avg: 32.8     median: 31 (1%)     max: 44 Seconds
Super Pi Mod 1.5 XS 32M *
100%
620M +
min: 768     avg: 785.6     median: 784 (3%)     max: 804 Seconds
100%
640M +
min: 735     avg: 758.4     median: 754 (3%)     max: 815 Seconds
SiSoft Sandra Dhrystone (MIPS)
100%
620M +
min: 35248     avg: 39037.6     median: 39280 (19%)     max: 42170 MIPS
SiSoft Sandra Whetstone (MFLOPS)
100%
620M +
min: 26510     avg: 28839.2     median: 27867 (21%)     max: 32430 MFLOPS
PCMark 05 - Standard 1024x768
100%
620M +
6832 Points (43%)
157%
640M +
min: 10087     avg: 10706     median: 10706 (67%)     max: 11325 Points
Windows 7 Experience Index - Processor
100%
620M +
6.8 points (98%)
100%
640M +
min: 6     avg: 6.9     median: 6 (86%)     max: 7 points
3DMark Vantage - P CPU no PhysX 1280x1024
100%
620M +
min: 7128     avg: 8391.5     median: 8645 (12%)     max: 8840 Points
102%
640M +
min: 8589     avg: 8881.8     median: 8861 (12%)     max: 9216 Points
3DMark 11 - Performance Physics 1280x720
100%
640M +
3356 points (17%)

Average Benchmarks Intel Core i7-620M → 100%

Average Benchmarks Intel Core i7-640M → 105%

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

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Redaktion, 2017-09- 8 (Update: 2017-09-11)