Intel Core i7-2640M
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.
Series Intel Core i7 Codename Sandy Bridge Series: Core i7 Sandy Bridge Clock Rate 2800 - 3500 MHz Level 1 Cache 128 KB Level 2 Cache 512 KB Level 3 Cache 4 MB Number of Cores / Threads 2 / 4 Power Consumption (TDP = Thermal Design Power) 35 Watt Transistor Count 624 Million Manufacturing Technology 32 nm Die Size 149 mm2 Max. Temperature 100 °C Features HD Graphics 3000, DDR3-1066/1333 Memory Controller (max 8GB), HyperThreading, AVX, Quick Sync, Virtualization GPU Intel HD Graphics 3000 (650 - 1300 MHz)64 Bit 64 Bit support Architecture x86 Starting Price $346 U.S. Announcement Date 09/04/2011
Benchmarks Cinebench R11.5 - Cinebench R11.5 CPU Multi 64 Bit
min: 3.07 avg: 3.1 median: 3.2 (6%) max: 3.2 Points
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Cinebench R11.5 - Cinebench R11.5 CPU Single 64 Bit
1.4 Points (43%)
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Cinebench R10 - Cinebench R10 Rend. Single (32bit)
min: 4009 avg: 4383 median: 4443 (40%) max: 4506 points
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Intel Core i5-2400 1%
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Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
min: 9691 avg: 9766 median: 9778 (16%) max: 9833 points
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Intel Core 2 Extreme (Desktop) QX6700 -3%
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Cinebench R10 - Cinebench R10 Rend. Multi (64bit)
min: 11067 avg: 11767 median: 11874 (11%) max: 12037 Points
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Cinebench R10 - Cinebench R10 Rend. Single (64bit)
min: 5445 avg: 5549 median: 5534 (39%) max: 5665 Points
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wPrime 2.10 - wPrime 2.0 1024m *
min: 478.5 avg: 494 median: 489 (6%) max: 523.632 s
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VIA C3-M C3-M-1200 1613%
wPrime 2.10 - wPrime 2.0 32m *
min: 15 avg: 15.5 median: 15.1 (3%) max: 16.614 s
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AMD Phenom II X4 905e -3%
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min: 2555 avg: 2632 median: 2620 (17%) max: 2733 points
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X264 HD Benchmark 4.0 - x264 Pass 2
min: 16.38 avg: 16.9 median: 17 (8%) max: 17.21 fps
Intel Pentium 4 2.4 GHz -89%
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AMD Phenom II X4 905e 2%
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X264 HD Benchmark 4.0 - x264 Pass 1
min: 88.74 avg: 91 median: 89.4 (26%) max: 95 fps
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AMD Phenom II X4 905e -4%
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TrueCrypt - TrueCrypt Serpent
min: 0.124 avg: 0.1 median: 0.1 (6%) max: 0.152 GB/s
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TrueCrypt - TrueCrypt Twofish
min: 0.198 avg: 0.2 median: 0.3 (7%) max: 0.27 GB/s
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TrueCrypt - TrueCrypt AES
1.6 GB/s (6%)
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3DMark 06 - CPU - 3DMark 06 - CPU
min: 3882 avg: 3934 median: 3927 (22%) max: 3978 Points
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Intel Core 2 Extreme (Desktop) QX6700 2%
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Super Pi mod 1.5 XS 1M - Super Pi mod 1.5 XS 1M *
min: 11 avg: 11.2 median: 11 (2%) max: 11.66 s
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Intel Core i5-2400 -1%
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VIA C3-M C3-M-1200 4034%
Super Pi mod 1.5 XS 2M - Super Pi mod 1.5 XS 2M *
min: 25 avg: 26 median: 26 (1%) max: 27.04 s
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Intel Core i5-2400 -1%
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Super Pi Mod 1.5 XS 32M - Super Pi mod 1.5 XS 32M *
min: 604 avg: 626 median: 634 (3%) max: 639 s
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VIA C3-M C3-M-1200 3496%
SiSoft Sandra Dhrystone (MIPS) - SiSoft Sandra Dhrystone (MIPS)
min: 64300 avg: 64523 median: 64545 (31%) max: 64700 MIPS
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Intel Core i5-2400 21%
Intel Core i7-940 30%
Intel Core i7-960 42%
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SiSoft Sandra Whetstone (MFLOPS) - SiSoft Sandra Whetstone (MFLOPS)
min: 39000 avg: 39255 median: 39135 (30%) max: 39750 MFLOPS
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Intel Core 2 Quad (Desktop) Q9550 -2%
Intel Core i5-2400 17%
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Windows 7 Experience Index - Win7 CPU
min: 7 avg: 7.2 median: 7.1 (91%) max: 7.6 Points
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3DMark Vantage - 3DM Vant. Perf. CPU no Physx
min: 10127 avg: 10509 median: 10559 (12%) max: 10838 Points
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3DMark 11 - 3DM11 Performance Physics
min: 3902 avg: 4140 median: 4172 (15%) max: 4320 Points
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3DMark - 3DMark Ice Storm Physics
26569 Points (17%)
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3DMark - 3DMark Cloud Gate Physics
2876 Points (7%)
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Geekbench 2 - 32 Bit - Geekbench Stream
7873 Points (64%)
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Geekbench 2 - 32 Bit - Geekbench Memory
6847 Points (62%)
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Geekbench 2 - 32 Bit - Geekbench Floating Point
7293 Points (14%)
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AMD Phenom II X4 905e -5%
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Geekbench 2 - 32 Bit - Geekbench Integer
6298 Points (13%)
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Geekbench 2 - 32 Bit - Geekbench Total Score
6913 Points (18%)
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Qualcomm Snapdragon 678 2%
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- 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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#8 min, max, avg, median took s +0.273s ... 0.308s
#9 return log +0.004s ... 0.312s
Reviews for the Intel Core i7 2640M processor
Asus U44SG (NVIDIA GeForce 610M, 14.00")Review Asus U44SG Notebook - Review
Asus U44SG-WO044V (NVIDIA GeForce 610M, 14.00")Asus U44SG-WO044V - External Review
Dell Inspiron 14R-N4120 (AMD Radeon HD 6630M, 14.00")Dell Inspiron 14R-N4120 - External Review
Dell Latitude XT3 (Intel HD Graphics 3000, 13.30")Review Dell Latitude XT3 Convertible - Review
Lenovo ThinkPad T420s 4174-PEG (NVIDIA NVS 4200M, 14.00")Review Lenovo ThinkPad T420s 4174-PEG Notebook - ReviewLenovo ThinkPad T420s 4174-PEG - External Review
Lenovo ThinkPad X1 NWK3QGE (Intel HD Graphics 3000, 13.30")Review Lenovo ThinkPad X1 (NWK3QGE) Notebook - ReviewLenovo ThinkPad X1 NWK3QGE - External Review
Razer Blade (NVIDIA GeForce GT 555M, 17.30")Razer Blade - External Review
Sony Vaio VPC-F24A4E/B (NVIDIA GeForce GT 540M, 16.40")Sony Vaio VPC-F24A4E/B - External Review
Sony Vaio VPC-SA3X9E/XI (AMD Radeon HD 6630M, 13.00")Review Sony Vaio VPC-SA3X9E/XI Notebook - Review
Sony Vaio VPC-SA4W9E/XI (AMD Radeon HD 6630M, 13.30")Sony Vaio VPC-SA4W9E/XI - External Review
Sony Vaio VPC-SE17 (AMD Radeon HD 6630M, 15.50")Sony Vaio VPC-SE17 - External Review
Sony Vaio VPC-SE190X (AMD Radeon HD 6630M, 15.50")Sony Vaio VPC-SE190X - External Review
Sony Vaio VPC-SE1V9R (AMD Radeon HD 6630M, 15.50")Sony Vaio VPC-SE1V9R - External Review
Sony Vaio VPC-SE1Z9E/B (AMD Radeon HD 6630M, 15.50")Review Sony Vaio VPC-SE1Z9E/B Notebook - ReviewSony Vaio VPC-SE1Z9E/B - External Review
Sony Vaio VPC-SE27FX/S (AMD Radeon HD 6630M, 15.50")Sony Vaio VPC-SE27FX/S - External Review
Sony Vaio VPC-SE2M9E/B (AMD Radeon HD 6630M, 15.50")Review Sony Vaio VPC-SE2M9E/B Notebook - Review
Sony Vaio VPC-SE2V9E (AMD Radeon HD 6630M, 15.60")Sony Vaio VPC-SE2V9E - External Review
Sony Vaio VPC-Z23N9E/B (AMD Radeon HD 6650M, 13.10")Review Sony Vaio VPC-Z23N9E/B Subnotebook - ReviewSony Vaio VPC-Z23N9E/B - External Review
Sony Vaio VPCSE1V9E (AMD Radeon HD 6630M, 15.50")Sony Vaio VPCSE1V9E - External Review
Sony Vaio VPCZ23J9E (Intel HD Graphics 3000, 13.30")Sony Vaio VPCZ23J9E - External Review
Sony Vaio VPCZ23Z9E (Intel HD Graphics 3000, 13.30")Sony Vaio VPCZ23Z9E - External Review
Toshiba Portégé R830-1DZ (Intel HD Graphics 3000, 13.30")Toshiba Portégé R830-1DZ - External Review
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Other CPUs of the series Core i7 Surrounding CPUs
Klaus Hinum, 2011-08-14 (Update: 2012-05-26)
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- Average benchmark values for this graphics card