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Intel Core i7-2640M

Intel 2640M

The Intel Core i7-2640M is the fastest dual core processor at the time of introduction in Q3 2011 and successor of the slower clocked i7-2620M. It is based on the Sandy Bridge architecture and offers Hyperthreading to handle 4 threads at once (for a better usage of the pipeline). Compared to the slower Core i5, the i7 offers a larger last level cache of 4MB. The base clock speed is 2.8 GHz but due to Turbo Boost it can reach 3.3 GHz (2 cores active) and 3.5 GHz (1 core active).

Sandy Bridge is the evolutionary successor of the Arrandale architecture. The most noteable improvements are the new 256Bit AVX instructions, the improved Turbo 2.0 and the integration of the graphics card into the 32nm CPU core. 

Der i7-2640M offers an integrated graphics card ( Intel HD Graphics 3000) which is clearly faster then the older Intel HD Graphics in the Arrandale CPUs. As the new GPU is included in the CPU, it is also manufactured in 32nm and shares the fast level 3 cache with the CPU cores (using a new ring bus). In the 2620M it is clocked from 650-1300MHz (Turbo Boost), and in the 2640M it should be similar.

Furthermore, an improved dual-channel DDR3 memory controller is included on the CPU die that is used by the CPU and GPU part.

Due to the improved architecture and the new Turbo Boost 2.0, the average performance of the Core i7-2640M is higher than a similar clocked Arrandale Core i7 dual core. The performance should even excel the old high-end quad core models like the Core i7-820QM.

The 35W TDP rating includes the integrated GPU and memory controller.

SeriesIntel Core i7
CodenameSandy Bridge
Series: Core i7 Sandy Bridge
Intel Core i7-2960XM (compare)2700 - 3700 MHz4 / 88 MB
Intel Core i7-2860QM (compare)2500 - 3600 MHz4 / 88 MB
Intel Core i7-2920XM (compare)2500 - 3500 MHz4 / 88 MB
Intel Core i7-2760QM (compare)2400 - 3500 MHz4 / 86 MB
Intel Core i7-2820QM (compare)2300 - 3400 MHz4 / 88 MB
Intel Core i7-2720QM (compare)2200 - 3300 MHz4 / 86 MB
Intel Core i7-2675QM (compare)2200 - 3100 MHz4 / 86 MB
Intel Core i7-2670QM (compare)2200 - 3100 MHz4 / 86 MB
Intel Core i7-2635QM (compare)2000 - 2900 MHz4 / 86 MB
Intel Core i7-2630QM (compare)2000 - 2900 MHz4 / 86 MB
» Intel Core i7-2640M2800 - 3500 MHz2 / 44 MB
Intel Core i7-2620M (compare)2700 - 3400 MHz2 / 44 MB
Intel Core i7-2649M (compare)2300 - 3200 MHz2 / 44 MB
Intel Core i7-2629M (compare)2100 - 3000 MHz2 / 44 MB
Intel Core i7-2677M (compare)1800 - 2900 MHz2 / 44 MB
Intel Core i7-2637M (compare)1700 - 2800 MHz2 / 44 MB
Intel Core i7-2657M (compare)1600 - 2700 MHz2 / 44 MB
Intel Core i7-2617M (compare)1500 - 2600 MHz2 / 44 MB
Clock Rate2800 - 3500 MHz
Level 1 Cache128 KB
Level 2 Cache512 KB
Level 3 Cache4 MB
Number of Cores / Threads2 / 4
Max. Power Consumption (TDP = Thermal Design Power)35 Watt
Transistor Count624 Million
Manufacturing Technology32 nm
Die Size149 mm2
Max. Temperature100 °C
FeaturesHD Graphics 3000, DDR3-1066/1333 Memory Controller (max 8GB), HyperThreading, AVX, Quick Sync, Virtualization
GPUIntel HD Graphics 3000 (650 - 1300 MHz)
64 Bit64 Bit support
Starting Price$346 U.S.
Announcement Date09/04/2011

Benchmarks

Cinebench R11.5 - CPU Multi 64Bit
min: 3.07     avg: 3.1     median: 3.2 (1%)     max: 3.2 Points
Cinebench R10 - Rendering Single 32Bit
min: 4009     avg: 4382.9     median: 4443 (60%)     max: 4506 Points
Cinebench R10 - Rendering Multiple CPUs 32Bit
min: 9691     avg: 9765.9     median: 9778 (20%)     max: 9833 Points
Cinebench R10 - Rendering Multiple CPUs 64Bit
min: 11067     avg: 11766.9     median: 11874 (29%)     max: 12037 Points
Cinebench R10 - Rendering Single CPUs 64Bit
min: 5445     avg: 5549.1     median: 5534 (45%)     max: 5665 Points
wPrime 2.0x - 1024m *
min: 478.5     avg: 493.5     median: 489 (6%)     max: 523.632 seconds
wPrime 2.0x - 32m *
min: 15     avg: 15.5     median: 15.1 (3%)     max: 16.614 seconds
WinRAR - Result
min: 2555     avg: 2632     median: 2620 (31%)     max: 2733 KB/s
X264 HD Benchmark 4.0 - Pass 2
min: 16.38     avg: 16.9     median: 17 (10%)     max: 17.21 fps
X264 HD Benchmark 4.0 - Pass 1
min: 88.74     avg: 91     median: 89.4 (38%)     max: 95 fps
TrueCrypt - Serpent Mean 100MB
min: 0.124     avg: 0.1     median: 0.1 (9%)     max: 0.152 GB/s
TrueCrypt - Twofish Mean 100MB
min: 0.198     avg: 0.2     median: 0.3 (13%)     max: 0.27 GB/s
TrueCrypt - AES Mean 100MB
1.6 GB/s (13%)
3DMark 06 - CPU
min: 3882     avg: 3933.5     median: 3927 (31%)     max: 3978 Points
Super Pi mod 1.5 XS 1M *
min: 11     avg: 11.2     median: 11 (2%)     max: 11.66 Seconds
Super Pi mod 1.5 XS 2M *
min: 25     avg: 26     median: 26 (1%)     max: 27.04 Seconds
Super Pi Mod 1.5 XS 32M *
min: 604     avg: 626.2     median: 634 (3%)     max: 639 Seconds
SiSoft Sandra Dhrystone (MIPS)
min: 64300     avg: 64522.5     median: 64545 (31%)     max: 64700 MIPS
SiSoft Sandra Whetstone (MFLOPS)
min: 39000     avg: 39255     median: 39135 (30%)     max: 39750 MFLOPS
Windows 7 Experience Index - Processor
min: 7     avg: 7.2     median: 7.1 (91%)     max: 7.6 points
3DMark Vantage - P CPU no PhysX 1280x1024
min: 10127     avg: 10509.3     median: 10559 (19%)     max: 10838 Points
3DMark 11 - Performance Physics 1280x720
min: 3902     avg: 4140.4     median: 4172 (25%)     max: 4320 points
- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance

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Reviews for the Intel Core i7 2640M processor

Asus U44SG (NVIDIA GeForce 610M, 14")
» Review Asus U44SG Notebook - Review

Asus U44SG-WO044V (NVIDIA GeForce 610M, 14")
» Asus U44SG-WO044V - External Review

Dell Inspiron 14R-N4120 (AMD Radeon HD 6630M, 14")
» Dell Inspiron 14R-N4120 - External Review

Dell Latitude XT3 (Intel HD Graphics 3000, 13.3")
» Review Dell Latitude XT3 Convertible - Review

Lenovo ThinkPad T420s 4174-PEG (NVIDIA NVS 4200M, 14")
» Review Lenovo ThinkPad T420s 4174-PEG Notebook - Review
» Lenovo ThinkPad T420s 4174-PEG - External Review

Lenovo ThinkPad X1 NWK3QGE (Intel HD Graphics 3000, 13.3")
» Review Lenovo ThinkPad X1 (NWK3QGE) Notebook - Review
» Lenovo ThinkPad X1 NWK3QGE - External Review

Razer Blade (NVIDIA GeForce GT 555M, 17.3")
» Razer Blade - External Review

Sony Vaio VPC-F24A4E/B (NVIDIA GeForce GT 540M, 16.4")
» Sony Vaio VPC-F24A4E/B - External Review

Sony Vaio VPC-SA3X9E/XI (AMD Radeon HD 6630M, 13")
» Review Sony Vaio VPC-SA3X9E/XI Notebook - Review

Sony Vaio VPC-SA4W9E/XI (AMD Radeon HD 6630M, 13.3")
» Sony Vaio VPC-SA4W9E/XI - External Review

Sony Vaio VPC-SE17 (AMD Radeon HD 6630M, 15.5")
» Sony Vaio VPC-SE17 - External Review

Sony Vaio VPC-SE190X (AMD Radeon HD 6630M, 15.5")
» Sony Vaio VPC-SE190X - External Review

Sony Vaio VPC-SE1V9R (AMD Radeon HD 6630M, 15.5")
» Sony Vaio VPC-SE1V9R - External Review

Sony Vaio VPC-SE1Z9E/B (AMD Radeon HD 6630M, 15.5")
» Review Sony Vaio VPC-SE1Z9E/B Notebook - Review
» Sony Vaio VPC-SE1Z9E/B - External Review

Sony Vaio VPC-SE27FX/S (AMD Radeon HD 6630M, 15.5")
» Sony Vaio VPC-SE27FX/S - External Review

Sony Vaio VPC-SE2M9E/B (AMD Radeon HD 6630M, 15.5")
» Review Sony Vaio VPC-SE2M9E/B Notebook - Review

Sony Vaio VPC-SE2V9E (AMD Radeon HD 6630M, 15.6")
» Sony Vaio VPC-SE2V9E - External Review

Sony Vaio VPC-Z23N9E/B (AMD Radeon HD 6650M, 13.1")
» Review Sony Vaio VPC-Z23N9E/B Subnotebook - Review
» Sony Vaio VPC-Z23N9E/B - External Review

Sony Vaio VPCSE1V9E (AMD Radeon HD 6630M, 15.5")
» Sony Vaio VPCSE1V9E - External Review

Sony Vaio VPCZ23J9E (Intel HD Graphics 3000, 13.3")
» Sony Vaio VPCZ23J9E - External Review

Sony Vaio VPCZ23Z9E (Intel HD Graphics 3000, 13.3")
» Sony Vaio VPCZ23Z9E - External Review

Toshiba Portégé R830-1DZ (Intel HD Graphics 3000, 13.3")
» Toshiba Portégé R830-1DZ - 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 7920HQ
   3.1 GHz / 1 MB + 8 MB
» Intel Core i7 4940MX
   3.1 GHz / 1 MB + 8 MB
» Intel Core i7 7820HQ
   2.9 GHz / 1 MB + 8 MB
» Intel Core i7 7820HK
   2.9 GHz / 1 MB + 8 MB
» Intel Core i7 4930MX
   3 GHz / 1 MB + 8 MB
» Intel Core i7 5950HQ
   2.9 GHz / 1 MB + 6 MB
» Intel Core i7 6920HQ
   2.9 GHz / 1 MB + 8 MB
» Intel Core i7 6970HQ
   2.8 GHz / 1 MB + 8 MB
» Intel Core i7 7700HQ
   2.8 GHz / 1 MB + 6 MB
» Intel Core i7 5850HQ
   2.7 GHz / 1 MB + 6 MB
» Intel Core i7 6870HQ
   2.7 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