Intel Core i7-2720QM vs Intel Core i7-2635QM vs Intel Core i7-2649M

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 i7-2635QM

► remove from comparison Intel 2635QM

The Intel Core i7-2635QM is a fast 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 i7-2635QM is now manufactured in 32nm and offers an integrated graphics card and AES functions. Compared to the faster Core i7, the 2635QM does not support Trusted Execution functions and VT-d (VT-x Virtualization only).

Compared to the Core i7-2630QM, the 2635QM offers a slightly higher Turbo Boost frequency for the GPU (1200MHz versus 1100MHz) and is offered in the BGA Package (2630QM rPGA).

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 i7-2635QM 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).

Furthermore, an improved 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 i7-2635QM should be about 10-15% faster than a similar clocked Clarksfield Core i7 (see first tests by Anandtech). Therefore, the 2635QM should be on a level (or even faster) than a Core i7-920XM Quad-Core.

Intel Core i7-2649M

► remove from comparison

The Intel Core i7-2649M is power efficient LV (Low Voltage) processor for laptops. The base frequency of 2.3 GHz is relatively low, but due to Turbo Boost 2.0, the CPU may clock up to 3.2 GHz (one core loaded, 2.9 GHz with both cores loaded). However, this is depending on the cooling and power consumption of the laptop. Due to HyperThreading, the i7-2649M is able to handle 4 threads in parallel. Compared to the similar called Core i7-2620M, the 2649M is slower but also needs less power (25W versus 35W TDP).

Sandy Bridge is the evolutionary successor of the Arrandale architecture. The most noteable improvements is 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 500 or 1100MHz (Turbo Boost). Due to the slower base clock rate, compared to HD Graphics 3000 in 35W and 45W processors (usually clocked at 650), the performance should be a bit lower.

The performance of the CPU should be a bit higher than a similar clocked Arrandale Core i7 LV. Therefore, the performance should a bit above the Core i3-390M if the Turbo can be used often.

The TDP of 25W (includes the integrated GPU and memory controller) allows the use of the 2649M CPU in thin notebooks.

Intel Core i7-2720QMIntel Core i7-2635QMIntel Core i7-2649M
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 MHz2000 - 2900 MHz2300 - 3200 MHz
256 KB256 KB128 KB
1 MB1 MB512 KB
6 MB6 MB4 MB
4 / 84 / 82 / 4
45 45 25
995 995 624
32 32 32
216 mm2216 mm2149 mm2
100 °C100 °C100 °C
FCBGA1224, FCPGA988FCBGA1224BGA1023
HD Graphics 3000 (650-1300MHz), DDR-1600 Memory Controller, HyperThreading, AVX, Quick Sync, VirtualizationHD Graphics 3000 (650-1200MHz), DDR-1333 Memory Controller, HyperThreading, AVX, Quick Sync, VirtualizationHD Graphics 3000 500-1100MHz, integrated DDR3-1333 memory controller, Virtualization, Trusted Execution, Hyper-Threading, Turbo Boost 2.0
iGPUIntel HD Graphics 3000 (650 - 1300 MHz)Intel HD Graphics 3000 (650 - 1200 MHz)Intel HD Graphics 3000 (500 - 1100 MHz)
Architecturex86x86x86
$378 U.S.
Intel Core i7 2720QMIntel Core i7 2635QMIntel Core i7 2649M

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
88%
1 2635QM +
min: 4.6     avg: 4.7     median: 4.7 (9%)     max: 4.68 Points
Cinebench R10 - Cinebench R10 Rend. Single (32bit)
100%
1 2720QM +
min: 4114     avg: 4168     median: 4167 (37%)     max: 4219
89%
1 2635QM +
min: 3677     avg: 3697     median: 3699 (33%)     max: 3699
Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
100%
1 2720QM +
min: 13961     avg: 14649     median: 14852 (25%)     max: 15301
91%
1 2635QM +
min: 13045     avg: 13521     median: 13581 (23%)     max: 13581
Cinebench R10 - Cinebench R10 Rend. Multi (64bit)
100%
1 2720QM +
min: 15819     avg: 17946     median: 18193 (17%)     max: 19061 Points
85%
1 2635QM +
15522 Points (15%)
Cinebench R10 - Cinebench R10 Rend. Single (64bit)
100%
1 2720QM +
min: 4204     avg: 5084     median: 5236 (39%)     max: 5299 Points
88%
1 2635QM +
4583 Points (35%)
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 2635QM +
486 s (6%)
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 2635QM +
15 s (3%)
3DMark 06 - CPU - 3DMark 06 - CPU
100%
1 2720QM +
min: 5133     avg: 5529     median: 5616 (31%)     max: 5772 Points
87%
1 2635QM +
4906 Points (27%)
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
99%
1 2635QM +
14 s (3%)
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 2635QM +
31 s (1%)
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 2635QM +
719 s (3%)
SiSoft Sandra Dhrystone (MIPS) - SiSoft Sandra Dhrystone (MIPS)
100%
1 2720QM +
109640 MIPS (52%)
SiSoft Sandra Whetstone (MFLOPS) - SiSoft Sandra Whetstone (MFLOPS)
100%
1 2720QM +
66400 MFLOPS (51%)
Windows 7 Experience Index - Win7 CPU
100%
1 2720QM +
7.5 Points (96%)
99%
1 2635QM +
7.4 Points (95%)
3DMark Vantage - 3DM Vant. Perf. CPU no Physx
100%
1 2720QM +
min: 11457     avg: 17984     median: 18725 (22%)     max: 19716 Points
89%
1 2635QM +
16710 Points (19%)
3DMark 11 - 3DM11 Performance Physics
100%
1 2720QM +
min: 5473     avg: 6495     median: 6627 (27%)     max: 7334 Points
85%
1 2635QM +
5658 Points (23%)
3DMark - 3DMark Ice Storm Physics
100%
1 2720QM +
36234 Points (23%)
3DMark - 3DMark Cloud Gate Physics
100%
1 2720QM +
5494 Points (14%)
3DMark - 3DMark Fire Strike Standard Physics
100%
1 2720QM +
7558 Points (19%)

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

Average Benchmarks Intel Core i7-2635QM → 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)