Intel Core i7-2720QM vs Intel Core i7-2675QM vs Intel Core i7-2640M

Intel Core i7-2720QM

► remove from comparison Intel 2720QM

The Intel Core i7-2720QM is a fast high-end quad core processor for laptops. It is based on the Sandy Bridge architecture and offers Hyperthreading to handle 8 threads at once (for a better usage of the pipeline). Compared to the previous Clarksdale quad-cores, the i7-2720QM is now manufactured in 32nm and offers an integrated graphics card and AES functions. Compared to the faster clocked 2820QM, the 2720QM offers less level 3 cache (6 vs. 8MB).

Sandy Bridge is the evolutionary successor of the Arrandale architecture. The most noteable improvements are the new 256Bit AVX instructions, the improved Turbo Boost and the integration of the graphics card into the 32nm CPU core. Furthermore, the integrated memory controller was improved and supports up to 8 GB DDR3-1333.

The i7-2720QM offers an integrated graphics card (Intel HD Graphics 3000) which proved to be clearly faster than the old Intel HD Graphics in the Arrandale CPUs and on a level with entry level dedicated graphics cards like the GeForce 310M. The HD Graphics 3000 also supports Turbo Boost and clocks between 650 MHz and 1300 MHz. As the graphics card shares the fast last level cache, the processor is a bit slower with activated GPU.

The performance of the Core i7-2720QM is noticeable better than the old i7-720QM and even a bit faster than the fastest Clarksfield CPU the Core i7-940XM quad core. Therefore, the performance should be sufficient for modern 3D games and demanding applications. Thanks to the fast Turbo Boost 2.0 even single threaded applications run very fast. The detailed benchmark results of the 2720QM can be found in the lower section of this page, or in our detailed review of the new Sandy Bridge quad core processors.

The relative high TDP rating of the 2720QM of 45 Watt enables the usage of the quad core only in 15" laptops and up. However, compared to the previous generation of quad-cores, the TDP improved, as the integrated GPU is now included.

Intel Core i7-2675QM

► remove from comparison Intel 2675QM

The Intel Core i7-2675QM is a fast quad core processor for laptops and successor to the popular i7-2630QM. It is based on the Sandy Bridge architecture and offers Hyperthreading to handle 8 threads at once (for a better usage of the pipeline). Compared to the 2630QM, the 2675QM offers higher base and turbo frequencies by 200MHz. Compared to the faster Core i7, the 2675QM does not feature the Trusted Execution and the VT-d functions.

Sandy Bridge is the evolutionary successor of the Arrandale architecture. The most noteable improvements are the new 265Bit AVX instructions, the improved Turbo 2.0 and the integration of the graphics card into the 32nm CPU core. 

Der i7-2630QM 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 2635QM it is clocked from  650-1200MHz (Turbo Boost). The Core i7-2630QM in comparison offers a lower Turbo Boost frequency of 1100MHz for the GPU part.

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

The performance of the Core i7-2675QM should be only slightly slower than the old Core i7-2720QM that offers only a slightly higher Turbo Boost frequencies. Therefore, even demanding applications and games should run without performance problems.

The quad core CPU is still rated at 45 Watt TDP but now the integrated graphics card is also included (compared to the old Clarksfield Quad Core processors).

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 i7-2720QMIntel Core i7-2675QMIntel Core i7-2640M
Intel Core i7Intel Core i7Intel Core i7
Sandy BridgeSandy BridgeSandy Bridge
Series: Core i7 Sandy Bridge
Intel Core i7-2960XM2.7 - 3.7 GHz4 / 88 MB
Intel Core i7-2860QM2.5 - 3.6 GHz4 / 88 MB
Intel Core i7-2920XM2.5 - 3.5 GHz4 / 88 MB
Intel Core i7-2760QM2.4 - 3.5 GHz4 / 86 MB
Intel Core i7-2820QM2.3 - 3.4 GHz4 / 88 MB
» Intel Core i7-2720QM2.2 - 3.3 GHz4 / 86 MB
Intel Core i7-2675QM2.2 - 3.1 GHz4 / 86 MB
Intel Core i7-2670QM2.2 - 3.1 GHz4 / 86 MB
Intel Core i7-2635QM2 - 2.9 GHz4 / 86 MB
Intel Core i7-2630QM2 - 2.9 GHz4 / 86 MB
Intel Core i7-2640M2.8 - 3.5 GHz2 / 44 MB
Intel Core i7-2620M2.7 - 3.4 GHz2 / 44 MB
Intel Core i7-2649M2.3 - 3.2 GHz2 / 44 MB
Intel Core i7-2629M2.1 - 3 GHz2 / 44 MB
Intel Core i7-2677M1.8 - 2.9 GHz2 / 44 MB
Intel Core i7-2637M1.7 - 2.8 GHz2 / 44 MB
Intel Core i7-2657M1.6 - 2.7 GHz2 / 44 MB
Intel Core i7-2617M1.5 - 2.6 GHz2 / 44 MB
Intel Core i7-2960XM2.7 - 3.7 GHz4 / 88 MB
Intel Core i7-2860QM2.5 - 3.6 GHz4 / 88 MB
Intel Core i7-2920XM2.5 - 3.5 GHz4 / 88 MB
Intel Core i7-2760QM2.4 - 3.5 GHz4 / 86 MB
Intel Core i7-2820QM2.3 - 3.4 GHz4 / 88 MB
Intel Core i7-2720QM2.2 - 3.3 GHz4 / 86 MB
» Intel Core i7-2675QM2.2 - 3.1 GHz4 / 86 MB
Intel Core i7-2670QM2.2 - 3.1 GHz4 / 86 MB
Intel Core i7-2635QM2 - 2.9 GHz4 / 86 MB
Intel Core i7-2630QM2 - 2.9 GHz4 / 86 MB
Intel Core i7-2640M2.8 - 3.5 GHz2 / 44 MB
Intel Core i7-2620M2.7 - 3.4 GHz2 / 44 MB
Intel Core i7-2649M2.3 - 3.2 GHz2 / 44 MB
Intel Core i7-2629M2.1 - 3 GHz2 / 44 MB
Intel Core i7-2677M1.8 - 2.9 GHz2 / 44 MB
Intel Core i7-2637M1.7 - 2.8 GHz2 / 44 MB
Intel Core i7-2657M1.6 - 2.7 GHz2 / 44 MB
Intel Core i7-2617M1.5 - 2.6 GHz2 / 44 MB
Intel Core i7-2960XM2.7 - 3.7 GHz4 / 88 MB
Intel Core i7-2860QM2.5 - 3.6 GHz4 / 88 MB
Intel Core i7-2920XM2.5 - 3.5 GHz4 / 88 MB
Intel Core i7-2760QM2.4 - 3.5 GHz4 / 86 MB
Intel Core i7-2820QM2.3 - 3.4 GHz4 / 88 MB
Intel Core i7-2720QM2.2 - 3.3 GHz4 / 86 MB
Intel Core i7-2675QM2.2 - 3.1 GHz4 / 86 MB
Intel Core i7-2670QM2.2 - 3.1 GHz4 / 86 MB
Intel Core i7-2635QM2 - 2.9 GHz4 / 86 MB
Intel Core i7-2630QM2 - 2.9 GHz4 / 86 MB
» Intel Core i7-2640M2.8 - 3.5 GHz2 / 44 MB
Intel Core i7-2620M2.7 - 3.4 GHz2 / 44 MB
Intel Core i7-2649M2.3 - 3.2 GHz2 / 44 MB
Intel Core i7-2629M2.1 - 3 GHz2 / 44 MB
Intel Core i7-2677M1.8 - 2.9 GHz2 / 44 MB
Intel Core i7-2637M1.7 - 2.8 GHz2 / 44 MB
Intel Core i7-2657M1.6 - 2.7 GHz2 / 44 MB
Intel Core i7-2617M1.5 - 2.6 GHz2 / 44 MB
2200 - 3300 MHz2200 - 3100 MHz2800 - 3500 MHz
256 KB256 KB128 KB
1 MB1 MB512 KB
6 MB6 MB4 MB
4 / 84 / 82 / 4
45 45 35
995 995 624
32 32 32
216 mm2216 mm2149 mm2
100 °C100 °C
FCBGA1224, FCPGA988BGA
HD Graphics 3000 (650-1300MHz), DDR-1600 Memory Controller, HyperThreading, AVX, Quick Sync, VirtualizationHD Graphics 3000, DDR-1333 Memory Controller, HyperThreading, AVX, Quick Sync, Virtualization (VT-x)HD Graphics 3000, DDR3-1066/1333 Memory Controller (max 8GB), HyperThreading, AVX, Quick Sync, Virtualization
iGPUIntel HD Graphics 3000 (650 - 1300 MHz)Intel HD Graphics 3000 (650 - 1200 MHz)Intel HD Graphics 3000 (650 - 1300 MHz)
Architecturex86x86x86
$378 U.S.$346 U.S.
Intel Core i7 2720QM

Benchmarks

Cinebench R11.5 - Cinebench R11.5 CPU Multi 64 Bit
100%
1 2720QM +
min: 5.12     avg: 5.3     median: 5.3 (11%)     max: 5.64 Points
60%
1 2640M +
min: 3.07     avg: 3.1     median: 3.2 (6%)     max: 3.2 Points
Cinebench R11.5 - Cinebench R11.5 CPU Single 64 Bit
100%
1 2640M +
1.4 Points (43%)
Cinebench R10 - Cinebench R10 Rend. Single (32bit)
100%
1 2720QM +
min: 4114     avg: 4168     median: 4167 (37%)     max: 4219
107%
1 2640M +
min: 4009     avg: 4383     median: 4443 (40%)     max: 4506
Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
100%
1 2720QM +
min: 13961     avg: 14649     median: 14852 (25%)     max: 15301
66%
1 2640M +
min: 9691     avg: 9766     median: 9778 (16%)     max: 9833
Cinebench R10 - Cinebench R10 Rend. Multi (64bit)
100%
1 2720QM +
min: 15819     avg: 17946     median: 18193 (17%)     max: 19061 Points
65%
1 2640M +
min: 11067     avg: 11767     median: 11874 (11%)     max: 12037 Points
Cinebench R10 - Cinebench R10 Rend. Single (64bit)
100%
1 2720QM +
min: 4204     avg: 5084     median: 5236 (39%)     max: 5299 Points
106%
1 2640M +
min: 5445     avg: 5549     median: 5534 (42%)     max: 5665 Points
wPrime 2.10 - wPrime 2.0 1024m *
100%
1 2720QM +
min: 410.2     avg: 423     median: 423.5 (5%)     max: 435.633 s
99%
1 2640M +
min: 478.5     avg: 494     median: 489 (6%)     max: 523.632 s
wPrime 2.10 - wPrime 2.0 32m *
100%
1 2720QM +
min: 12.13     avg: 13     median: 13.1 (3%)     max: 13.729 s
100%
1 2640M +
min: 15     avg: 15.5     median: 15.1 (3%)     max: 16.614 s
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 (6%)     max: 0.152 GB/s
TrueCrypt - TrueCrypt Twofish
100%
1 2640M +
min: 0.198     avg: 0.2     median: 0.3 (7%)     max: 0.27 GB/s
TrueCrypt - TrueCrypt AES
100%
1 2640M +
1.6 GB/s (6%)
3DMark 06 - CPU - 3DMark 06 - CPU
100%
1 2720QM +
min: 5133     avg: 5529     median: 5616 (31%)     max: 5772 Points
70%
1 2640M +
min: 3882     avg: 3934     median: 3927 (22%)     max: 3978 Points
Super Pi mod 1.5 XS 1M - Super Pi mod 1.5 XS 1M *
100%
1 2720QM +
min: 11     avg: 11.4     median: 11 (2%)     max: 12.3 s
100%
1 2640M +
min: 11     avg: 11.2     median: 11 (2%)     max: 11.66 s
Super Pi mod 1.5 XS 2M - Super Pi mod 1.5 XS 2M *
100%
1 2720QM +
min: 26     avg: 27     median: 27 (1%)     max: 28.2 s
100%
1 2640M +
min: 25     avg: 26     median: 26 (1%)     max: 27.04 s
Super Pi Mod 1.5 XS 32M - Super Pi mod 1.5 XS 32M *
100%
1 2720QM +
min: 635     avg: 650     median: 647 (3%)     max: 671 s
100%
1 2640M +
min: 604     avg: 626     median: 634 (3%)     max: 639 s
SiSoft Sandra Dhrystone (MIPS) - SiSoft Sandra Dhrystone (MIPS)
100%
1 2720QM +
109640 MIPS (52%)
59%
1 2640M +
min: 64300     avg: 64523     median: 64545 (31%)     max: 64700 MIPS
SiSoft Sandra Whetstone (MFLOPS) - SiSoft Sandra Whetstone (MFLOPS)
100%
1 2720QM +
66400 MFLOPS (51%)
59%
1 2640M +
min: 39000     avg: 39255     median: 39135 (30%)     max: 39750 MFLOPS
Windows 7 Experience Index - Win7 CPU
100%
1 2720QM +
7.5 Points (96%)
95%
1 2640M +
min: 7     avg: 7.2     median: 7.1 (91%)     max: 7.6 Points
3DMark Vantage - 3DM Vant. Perf. CPU no Physx
100%
1 2720QM +
min: 11457     avg: 17984     median: 18725 (22%)     max: 19716 Points
56%
1 2640M +
min: 10127     avg: 10509     median: 10559 (12%)     max: 10838 Points
3DMark 11 - 3DM11 Performance Physics
100%
1 2720QM +
min: 5473     avg: 6495     median: 6627 (27%)     max: 7334 Points
63%
1 2640M +
min: 3902     avg: 4140     median: 4172 (17%)     max: 4320 Points
3DMark - 3DMark Ice Storm Physics
100%
1 2720QM +
36234 Points (23%)
73%
1 2640M +
26569 Points (17%)
3DMark - 3DMark Cloud Gate Physics
100%
1 2720QM +
5494 Points (14%)
52%
1 2640M +
2876 Points (7%)
3DMark - 3DMark Fire Strike Standard Physics
100%
1 2720QM +
7558 Points (19%)
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%)
Geekbench 4.0 - Geekbench 4.0 64 Bit Single-Core
100%
1 2675QM +
3100 (48%)
Geekbench 4.0 - Geekbench 4.0 64 Bit Multi-Core
100%
1 2675QM +
10090 (25%)
Geekbench 4.1 - 4.4 - Geekbench 4.1 - 4.4 64 Bit Single-Core
100%
1 2675QM +
3100 (42%)
Geekbench 4.1 - 4.4 - Geekbench 4.1 - 4.4 64 Bit Multi-Core
100%
1 2675QM +
9800 (15%)
Geekbench 5.3 - Geekbench 5.1 - 5.3 64 Bit Single-Core
100%
1 2675QM +
536 (30%)
Geekbench 5.3 - Geekbench 5.1 - 5.3 64 Bit Multi-Core
100%
1 2675QM +
1928 (11%)

Average Benchmarks Intel Core i7-2720QM → NAN% n=

Average Benchmarks Intel Core i7-2675QM → NAN% n=

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

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