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Intel Core i7-2640M vs Intel Core i7-2677M

Intel Core i7-2640M

► remove from comparison 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.

Intel Core i7-2677M

► remove from comparison

The Intel Core i7-2677M is power efficient ULV (Ultra Low Voltage) processor for thin and light laptops. The base frequency of 1.7 GHz is relatively low, but due to Turbo Boost 2.0, the CPU may clock up to 2.8 GHz (one core loaded, 2.5 GHz with both cores loaded). However, this depends on the cooling and power consumption of the laptop. Due to HyperThreading, the i7-2677M is able to handle 4 threads in parallel.

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

The integrated Intel HD Graphics 3000 clocked at 350 or 1200MHz (Turbo Boost). Due to the slower clock rate without the Turbo, compared to HD Graphics 3000 in 35W and 45W processors (usually clocked at 650 base speed in non LV processors), the performance should be noticeable lower.

The performance of the CPU should be a bit higher than a similar clocked Arrandale Core i5. Thanks to the high Turbo Boost frequencies, the performance should be similar to the Core i3-2330M. However, the laptop cooling system has to keep the processor relatively cool for the Turbo Boost to work often.

The TDP of 17W (includes the integrated GPU and memory controller) allows the use of the 2677M CPU in small subnotebooks.

Intel Core i7-2640MIntel Core i7-2677M
Intel Core i7Intel Core i7
Sandy BridgeSandy Bridge
Series: Core i7 Sandy Bridge
Intel Core i7-2960XM compare2.7 - 3.7 GHz4 / 88 MB
Intel Core i7-2860QM compare2.5 - 3.6 GHz4 / 88 MB
Intel Core i7-2920XM compare2.5 - 3.5 GHz4 / 88 MB
Intel Core i7-2760QM compare2.4 - 3.5 GHz4 / 86 MB
Intel Core i7-2820QM compare2.3 - 3.4 GHz4 / 88 MB
Intel Core i7-2720QM compare2.2 - 3.3 GHz4 / 86 MB
Intel Core i7-2675QM compare2.2 - 3.1 GHz4 / 86 MB
Intel Core i7-2670QM compare2.2 - 3.1 GHz4 / 86 MB
Intel Core i7-2635QM compare2 - 2.9 GHz4 / 86 MB
Intel Core i7-2630QM compare2 - 2.9 GHz4 / 86 MB
» Intel Core i7-2640M2.8 - 3.5 GHz2 / 44 MB
Intel Core i7-2620M compare2.7 - 3.4 GHz2 / 44 MB
Intel Core i7-2649M compare2.3 - 3.2 GHz2 / 44 MB
Intel Core i7-2629M compare2.1 - 3 GHz2 / 44 MB
Intel Core i7-2677M1.8 - 2.9 GHz2 / 44 MB
Intel Core i7-2637M compare1.7 - 2.8 GHz2 / 44 MB
Intel Core i7-2657M compare1.6 - 2.7 GHz2 / 44 MB
Intel Core i7-2617M compare1.5 - 2.6 GHz2 / 44 MB
Intel Core i7-2960XM compare2.7 - 3.7 GHz4 / 88 MB
Intel Core i7-2860QM compare2.5 - 3.6 GHz4 / 88 MB
Intel Core i7-2920XM compare2.5 - 3.5 GHz4 / 88 MB
Intel Core i7-2760QM compare2.4 - 3.5 GHz4 / 86 MB
Intel Core i7-2820QM compare2.3 - 3.4 GHz4 / 88 MB
Intel Core i7-2720QM compare2.2 - 3.3 GHz4 / 86 MB
Intel Core i7-2675QM compare2.2 - 3.1 GHz4 / 86 MB
Intel Core i7-2670QM compare2.2 - 3.1 GHz4 / 86 MB
Intel Core i7-2635QM compare2 - 2.9 GHz4 / 86 MB
Intel Core i7-2630QM compare2 - 2.9 GHz4 / 86 MB
Intel Core i7-2640M2.8 - 3.5 GHz2 / 44 MB
Intel Core i7-2620M compare2.7 - 3.4 GHz2 / 44 MB
Intel Core i7-2649M compare2.3 - 3.2 GHz2 / 44 MB
Intel Core i7-2629M compare2.1 - 3 GHz2 / 44 MB
» Intel Core i7-2677M1.8 - 2.9 GHz2 / 44 MB
Intel Core i7-2637M compare1.7 - 2.8 GHz2 / 44 MB
Intel Core i7-2657M compare1.6 - 2.7 GHz2 / 44 MB
Intel Core i7-2617M compare1.5 - 2.6 GHz2 / 44 MB
2800 - 3500 MHz1800 - 2900 MHz
128 KB128 KB
512 KB512 KB
4 MB4 MB
2 / 42 / 4
35 17
624 624
32 32
149 mm2149 mm2
100 °C100 °C
HD Graphics 3000, DDR3-1066/1333 Memory Controller (max 8GB), HyperThreading, AVX, Quick Sync, VirtualizationTurbo Boost 2.0, Hyper-Threading, Virtualization VT-x, Virtualization for Directed I/O (VT-d), Trusted Execution, AES, Intel 64, Anti-Theft, My WiFi, Idle States, Enhanced SpeedStep, Thermal Monitorin, Execute Disable Bit
iGPUIntel HD Graphics 3000 (650 - 1300 MHz)Intel HD Graphics 3000 (350 - 1200 MHz)
Architecturex86x86
$346 U.S.$317 U.S.
BGA1023
Intel Core i7 2677M

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
2.1 Points (4%)
Cinebench R11.5 - Cinebench R11.5 CPU Single 64 Bit
100%
1 2640M +
1.4 Points (43%)
Cinebench R10 - Cinebench R10 Rend. Single (32bit)
min: 4009     avg: 4383     median: 4443 (40%)     max: 4506
3614 (32%)
Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
min: 9691     avg: 9766     median: 9778 (16%)     max: 9833
6672 (11%)
Cinebench R10 - Cinebench R10 Rend. Multi (64bit)
min: 11067     avg: 11767     median: 11874 (11%)     max: 12037 Points
7834 Points (7%)
Cinebench R10 - Cinebench R10 Rend. Single (64bit)
min: 5445     avg: 5549     median: 5534 (39%)     max: 5665 Points
4527 Points (32%)
wPrime 2.10 - wPrime 2.0 1024m *
min: 478.5     avg: 494     median: 489 (6%)     max: 523.632 s
732 s (9%)
wPrime 2.10 - wPrime 2.0 32m *
min: 15     avg: 15.5     median: 15.1 (3%)     max: 16.614 s
19.6 s (4%)
WinRAR - WinRAR 4.0
100%
1 2640M +
min: 2555     avg: 2632     median: 2620 (17%)     max: 2733
X264 HD Benchmark 4.0 - x264 Pass 2
100%
1 2640M +
min: 16.38     avg: 16.9     median: 17 (8%)     max: 17.21 fps
X264 HD Benchmark 4.0 - x264 Pass 1
100%
1 2640M +
min: 88.74     avg: 91     median: 89.4 (26%)     max: 95 fps
TrueCrypt - TrueCrypt Serpent
100%
1 2640M +
min: 0.124     avg: 0.1     median: 0.1 (5%)     max: 0.152 GB/s
TrueCrypt - TrueCrypt Twofish
100%
1 2640M +
min: 0.198     avg: 0.2     median: 0.3 (5%)     max: 0.27 GB/s
TrueCrypt - TrueCrypt AES
100%
1 2640M +
1.6 GB/s (6%)
3DMark 06 - CPU - 3DMark 06 - CPU
min: 3882     avg: 3934     median: 3927 (22%)     max: 3978 Points
2729 Points (15%)
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
13 s (3%)
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
32 s (1%)
Super Pi Mod 1.5 XS 32M - Super Pi mod 1.5 XS 32M *
min: 604     avg: 626     median: 634 (3%)     max: 639 s
763 s (3%)
SiSoft Sandra Dhrystone (MIPS) - SiSoft Sandra Dhrystone (MIPS)
100%
1 2640M +
min: 64300     avg: 64523     median: 64545 (31%)     max: 64700 MIPS
SiSoft Sandra Whetstone (MFLOPS) - SiSoft Sandra Whetstone (MFLOPS)
100%
1 2640M +
min: 39000     avg: 39255     median: 39135 (30%)     max: 39750 MFLOPS
Windows 7 Experience Index - Win7 CPU
min: 7     avg: 7.2     median: 7.1 (91%)     max: 7.6 Points
6.9 Points (88%)
3DMark Vantage - 3DM Vant. Perf. CPU no Physx
min: 10127     avg: 10509     median: 10559 (12%)     max: 10838 Points
6902 Points (8%)
3DMark 11 - 3DM11 Performance Physics
100%
1 2640M +
min: 3902     avg: 4140     median: 4172 (15%)     max: 4320 Points
3DMark - 3DMark Ice Storm Physics
100%
1 2640M +
26569 Points (17%)
3DMark - 3DMark Cloud Gate Physics
100%
1 2640M +
2876 Points (7%)
Geekbench 2 - 32 Bit - Geekbench Stream
100%
1 2640M +
7873 Points (64%)
Geekbench 2 - 32 Bit - Geekbench Memory
100%
1 2640M +
6847 Points (62%)
Geekbench 2 - 32 Bit - Geekbench Floating Point
100%
1 2640M +
7293 Points (14%)
Geekbench 2 - 32 Bit - Geekbench Integer
100%
1 2640M +
6298 Points (13%)
Geekbench 2 - 32 Bit - Geekbench Total Score
100%
1 2640M +
6913 Points (18%)

Average Benchmarks Intel Core i7-2640M → 100% n=13

Average Benchmarks Intel Core i7-2677M → 84% n=13

- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance
1 This benchmark is not used for the average calculation

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v1.16
log 19. 20:16:18

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#2 not redirecting to Ajax server +0s ... 0s

#3 did not recreate cache, as it is less than 5 days old! Created at Wed, 15 Sep 2021 13:09:12 +0200 +0s ... 0s

#4 composed specs +0.01s ... 0.01s

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#6 getting avg benchmarks for device 2839 +0s ... 0.011s

#7 got single benchmarks 2839 +0.018s ... 0.029s

#8 getting avg benchmarks for device 2738 +0s ... 0.029s

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#10 got avg benchmarks for devices +0s ... 0.038s

#11 min, max, avg, median took s +0.016s ... 0.054s

#12 return log +0.004s ... 0.058s

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