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Intel Core i7-640M

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.

SeriesIntel Core i7
CodenameArrandale
Clock Rate2800 - 3460 MHz
Front Side Bus2500 MHz
Level 2 Cache512 KB
Level 3 Cache4096 KB
Number of Cores / Threads2 / 4
Max. Power Consumption (TDP = Thermal Design Power)35 Watt
Transistor Count382+177 Million
Manufacturing Technology32 nm
Die Size81+114 mm2
Max. Temperature105 °C
SocketBGA1288, PGA988
FeaturesTurbo Boost, Hyper Threading, Enhanced Speedstep, integrierte GMA HD 500-733MHz, Dual Channel DDR3 memory controller
64 Bit64 Bit support
Hardware VirtualizationVT-x, VT-d
Starting Price $346 U.S.
Announcement Date09/20/2010
Product Link (external)Intel Core i7 640M

CPU Benchmarks

TrueCrypt: Serpent Mean 100MB
0% 100%
min: 0.135     avg: 0.1 (6.85%)     max: 0.135 GB/s
TrueCrypt: Twofish Mean 100MB
0% 100%
min: 0.241     avg: 0.2 (13.44%)     max: 0.241 GB/s
TrueCrypt: AES Mean 100MB
0% 100%
min: 1.3     avg: 1.3 (14.45%)     max: 1.3 GB/s
WinRAR: Result
0% 100%
min: 1763     avg: 1763 (24.24%)     max: 1763 KB/s
wPrime 2.0x: 1024m
0% 100%
min: 523     avg: 708.4 (93.06%)     max: 1173.06 seconds*
wPrime 2.0x: 32m
0% 100%
min: 16.6     avg: 22.1 (96.44%)     max: 36.611 seconds*
3DMark 11: Performance Physics 1280x720
0% 100%
min: 3356     avg: 3356 (25.39%)     max: 3356 points
3DMark Vantage: P CPU no PhysX 1280x1024
0% 100%
min: 8589     avg: 8881.8 (22.21%)     max: 9216 Points
3DMark 06 - CPU:
0% 100%
min: 3094     avg: 3284.6 (35.66%)     max: 3442 Points
PCMark 05: Standard 1024x768
0% 100%
min: 10087     avg: 10706 (65.68%)     max: 11325 Points
Cinebench R11.5: CPU Single 64Bit
0% 100%
min: 1.06     avg: 1.1 (55.11%)     max: 1.06 Points
Cinebench R11.5: CPU Multi 64Bit
0% 100%
min: 2.4     avg: 2.5 (13.3%)     max: 2.63 Points
Cinebench R10: Rendering Single CPUs 64Bit
0% 100%
min: 4455     avg: 4562.5 (18.32%)     max: 4606 Points
Cinebench R10: Rendering Multiple CPUs 64Bit
0% 100%
min: 9096     avg: 9533 (24.74%)     max: 10027 Points
Cinebench R10: Rendering Single 32Bit
0% 100%
min: 3597     avg: 3711 (54.77%)     max: 3792 Points
Cinebench R10: Rendering Multiple CPUs 32Bit
0% 100%
min: 7765     avg: 7986.9 (22.97%)     max: 8349 Points
Super Pi mod 1.5 XS 1M:
0% 100%
min: 12     avg: 13.1 (99.1%)     max: 18 Seconds*
Super Pi mod 1.5 XS 2M:
0% 100%
min: 30     avg: 32.7 (99.49%)     max: 44 Seconds*
Super Pi Mod 1.5 XS 32M:
0% 100%
min: 735     avg: 758.4 (96.69%)     max: 815 Seconds*
Windows 7 Experience Index: Processor
0% 100%
min: 6.8     avg: 6.9 (85.71%)     max: 7 points
- Range of benchmarks for this CPU
- Average benchmark score

Reviews for the Intel Core i7 640M processor

Acer Aspire 4820TG-644G16Mnks (AMD Radeon HD 6550M, 14.1")
» Review Acer Aspire 4820TG (i7/HD 6550) Notebook - Review
» Acer Aspire 4820TG-644G16Mnks - External Review

Acer TravelMate 6594G-644G50Mi (ATI Mobility Radeon HD 5650, 15.6")
» Acer TravelMate 6594G-644G50Mi - External Review

Clevo B5130M (NVIDIA GeForce GT 425M, 15.6")
» Clevo B5130M - External Review

Compal NBLB2 (ATI Mobility Radeon HD 5650, 15.6")
» Compal NBLB2 - External Review

Dell Latitude E5410 (Core i7 640M, GMA HD) (Intel Graphics Media Accelerator (GMA) HD Graphics, 14.1")
» Review Dell Latitude E5410 Notebook - Review
» Dell Latitude E5410 (Core i7 640M, GMA HD) - External Review

Dell Latitude E5510 (GMA HD, i7 640M) (Intel Graphics Media Accelerator (GMA) HD Graphics, 15.6")
» Review Dell Latitude E5510 Notebook - Review
» Dell Latitude E5510 (GMA HD, i7 640M) - External Review

Micro Express NBL 5100 (NVIDIA GeForce GT 330M, 15.6")
» Micro Express NBL 5100 - External Review

Schenker XMG P500 (NVIDIA GeForce GTX 460M, 15.6")
» mySN XMG P500 - External Review

Schenker XMG P500 PRO (NVIDIA GeForce GTX 460M, 15.6")
» Review Schenker XMG P500 PRO Gaming Notebook - Review
» mySN XMG P500 PRO - External Review

Sony Vaio VPC-Z13Z9E (NVIDIA GeForce GT 330M, 13.1")
» Review Sony Vaio VPC-Z13Z9E (i7, FHD, Quad-SSD) subnotebook - Review
» Sony Vaio VPC-Z13Z9E - External Review

Sony Vaio VPC-Z13Z9E/X (NVIDIA GeForce GT 330M, 13.1")
» Sony Vaio VPC-Z13Z9E/X - External Review

» Mobile CPU Comparison
Comparison of all mobile CPU series

» Mobile Processors - Benchmarklist
Benchmarklist of all known CPUs that are used in laptops (desktop and laptop CPUs)

Other CPUs of the series Intel Core i7

» Intel Core i7 4940MX
   3.1 GHz / 1 MB + 8 MB
» Intel Core i7 4930MX
   3 GHz / 1 MB + 8 MB
» Intel Core i7 4980HQ
   2.8 GHz / 1 MB + 6 MB
» Intel Core i7 4910MQ
   2.9 GHz / 1 MB + 8 MB
» Intel Core i7 3940XM
   3 GHz / 1 MB + 8 MB
» Intel Core i7 4900MQ
   2.8 GHz / 1 MB + 8 MB
» Intel Core i7 4960HQ
   2.6 GHz / 1 MB + 6 MB
» Intel Core i7 4810MQ
   2.8 GHz / 1 MB + 6 MB
» Intel Core i7 4870HQ
   2.5 GHz / 1 MB + 6 MB
» Intel Core i7 3920XM
   2.9 GHz / 1 MB + 8 MB
» Intel Core i7 4800MQ
   2.7 GHz / 1 MB + 6 MB
» Intel Core i7 4950HQ
   2.4 GHz / 1 MB + 6 MB
» Intel Core i7 4860HQ
   2.4 GHz / 1 MB + 6 MB
» Intel Core i7 3840QM
   2.8 GHz / 1 MB + 8 MB
» Intel Core i7 4850HQ
   2.3 GHz / 1 MB + 6 MB
» Intel Core i7 4710HQ
   2.5 GHz / 1 MB + 6 MB
» Intel Core i7 4710MQ
   2.5 GHz / 1 MB + 6 MB
» Intel Core i7 4770HQ
   2.2 GHz / 1 MB + 6 MB
» Intel Core i7 3820QM
   2.7 GHz / 1 MB + 8 MB
» Intel Core i7 3740QM
   2.7 GHz / 1 MB + 6 MB
» Intel Core i7 3720QM
   2.6 GHz / 1 MB + 6 MB
» Intel Core i7 4700HQ
   2.4 GHz / 1 MB + 6 MB
» Intel Core i7 4700MQ
   2.4 GHz / 1 MB + 6 MB
» Intel Core i7 4760HQ
   2.1 GHz / 1 MB + 6 MB
» Intel Core i7 2960XM
   2.7 GHz / 1 MB + 8 MB
» Intel Core i7 4712HQ
   2.3 GHz / 1 MB + 6 MB
» Intel Core i7 4712MQ
   2.3 GHz / 1 MB + 6 MB
» Intel Core i7 4750HQ
   2 GHz / 1 MB + 6 MB
» Intel Core i7 3635QM
   2.4 GHz / 1 MB + 6 MB
» Intel Core i7 3630QM
   2.4 GHz / 1 MB + 6 MB
» Intel Core i7 4702HQ
   2.2 GHz / 1 MB + 6 MB
» Intel Core i7 4702MQ
   2.2 GHz / 1 MB + 6 MB
» Intel Core i7 2860QM
   2.5 GHz / 1 MB + 8 MB
» Intel Core i7 2920XM
   2.5 GHz / 1 MB + 8 MB
» Intel Core i7 3615QM
   2.3 GHz / 1 MB + 6 MB
» Intel Core i7 3610QM
   2.3 GHz / 1 MB + 6 MB
» Intel Core i7 3632QM
   2.2 GHz / 1 MB + 6 MB
» Intel Core i7 2760QM
   2.4 GHz / 1 MB + 6 MB
» Intel Core i7 2820QM
   2.3 GHz / 1 MB + 8 MB
» Intel Core i7 3612QM
   2.1 GHz / 1 MB + 6 MB
» Intel Core i7 2720QM
   2.2 GHz / 1 MB + 6 MB
» Intel Core i7 2675QM
   2.2 GHz / 1 MB + 6 MB
» Intel Core i7 2670QM
   2.2 GHz / 1 MB + 6 MB
» Intel Core i7 2635QM
   2 GHz / 1 MB + 6 MB
» Intel Core i7 2630QM
   2 GHz / 1 MB + 6 MB
» Intel Core i7 4610M
   3 GHz / 0.5 MB + 4 MB
» Intel Core i7 940XM
   2.13 GHz / 1 MB + 8 MB
» Intel Core i7 4600M
   2.9 GHz / 0.5 MB + 4 MB
» Intel Core i7 5557U
   3.1 GHz / 0.5 MB + 4 MB
» Intel Core i7 4578U
   3 GHz / 0.5 MB + 4 MB
» Intel Core i7 920XM
   2 GHz / 1 MB + 8 MB
» Intel Core i7 3540M
   3 GHz / 0.5 MB + 4 MB
» Intel Core i7 4558U
   2.8 GHz / 0.5 MB + 4 MB
» Intel Core i7 3520M
   2.9 GHz / 0.5 MB + 4 MB
» Intel Core i7 5600U
   2.6 GHz / 0.5 MB + 4 MB
» Intel Core i7 5650U
   2.2 GHz / 0.5 MB + 4 MB
» Intel Core i7 2640M
   2.8 GHz / 0.5 MB + 4 MB
» Intel Core i7 5500U
   2.4 GHz / 0.5 MB + 4 MB
» Intel Core i7 5550U
   2 GHz / 0.5 MB + 4 MB
» Intel Core i7 840QM
   1.86 GHz / 1 MB + 8 MB
» Intel Core i7 2620M
   2.7 GHz / 0.5 MB + 4 MB
» Intel Core i7 4600U
   2.1 GHz / 0.5 MB + 4 MB
» Intel Core i7 4650U
   1.7 GHz / 0.5 MB + 4 MB
» Intel Core i7 3687U
   2.1 GHz / 0.5 MB + 4 MB
» Intel Core i7 4510U
   2 GHz / 0.5 MB + 4 MB
» Intel Core i7 640M
   2.8 GHz / 0.5 MB + 4 MB
» Intel Core i7 820QM
   1.73 GHz / 1 MB + 8 MB
» Intel Core i7 3667U
   2 GHz / 0.5 MB + 4 MB
» Intel Core i7 4500U
   1.8 GHz / 0.5 MB + 4 MB
» Intel Core i7 4550U
   1.5 GHz / 0.5 MB + 4 MB
» Intel Core i7 740QM
   1.73 GHz / 1 MB + 6 MB
» Intel Core i7 3537U
   2 GHz / 0.5 MB + 4 MB
» Intel Core i7 3517U
   1.9 GHz / 0.5 MB + 4 MB
» Intel Core i7 620M
   2.66 GHz / 0.5 MB + 4 MB
» Intel Core i7 720QM
   1.6 GHz / 1 MB + 6 MB
» Intel Core i7 2649M
   2.3 GHz / 0.5 MB + 4 MB
» Intel Core i7 4610Y
   1.7 GHz / 0.5 MB + 4 MB
» Intel Core i7 2629M
   2.1 GHz / 0.5 MB + 4 MB
» Intel Core i7 2677M
   1.8 GHz / 0.5 MB + 4 MB
» Intel Core i7 660LM
   2.27 GHz / 0.5 MB + 4 MB
» Intel Core i7 2637M
   1.7 GHz / 0.5 MB + 4 MB
» Intel Core i7 2657M
   1.6 GHz / 0.5 MB + 4 MB
» Intel Core i7 3689Y
   1.5 GHz / 0.5 MB + 4 MB
» Intel Core i7 2617M
   1.5 GHz / 0.5 MB + 4 MB
» Intel Core i7 640LM
   2.13 GHz / 0.5 MB + 4 MB
» Intel Core i7 620LM
   2 GHz / 0.5 MB + 4 MB
» Intel Core i7 680UM
   1.47 GHz / 0.5 MB + 4 MB
» Intel Core i7 660UM
   1.33 GHz / 0.5 MB + 4 MB
» Intel Core i7 640UM
   1.2 GHz / 0.5 MB + 4 MB
» Intel Core i7 620UM
   1.06 GHz / 0.5 MB + 4 MB

Surrounding CPUs

- AMD A-Series (Desktop) A8-3850
   2.9 GHz / 4 MB
- Intel Core i7 4510U
   2 GHz / 0.5 MB + 4 MB
- Intel Core i5 5300U
   2.3 GHz / 0.5 MB + 3 MB
- Intel Core i5 5350U
   1.8 GHz / 0.5 MB + 3 MB
- Intel Core i5 3210M
   2.5 GHz / 0.5 MB + 3 MB
» Intel Core i7 640M
   2.8 GHz / 0.5 MB + 4 MB
+ Intel Core i7 820QM
   1.73 GHz / 1024 KB + 8196 KB
+ Intel Core 2 Extreme QX9300
   2.53 GHz / 12268 KB
+ Intel Core 2 Extreme (Desktop) QX6700
   2.67 GHz / 8192 KB
+ Intel Core i5 2540M
   2.6 GHz / 512 KB + 3072 KB
+ Intel Core i7 3667U
   2 GHz / 512 KB + 4096 KB
> Notebook / Laptop Reviews and News > FAQ / Tips / Technics > Notebook Processors > Intel Core i7 > Intel Core i7 640M Notebook Processor
Author: Klaus Hinum, 2010-09-13 (Update: 2012-05-26)