Intel Core i7-2649M vs Intel Core i7-2720QM vs Intel Core i7-2637M

Intel Core i7-2649M

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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 i7-2720QM

► remove 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 i7-2637M

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The Intel Core i7-2637M 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 (on 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 i7-2637M is able to handle 4 threads in parallel. Compared to the slower i7-2617M, the 2637M offers a higher clock speed (processor core and turbo, graphics turbo).

Sandy Bridge is the evolutionary successor of the Arrandale architecture. The most notable 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 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 i3-2310M. 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 2637M CPU in small subnotebooks.

Intel Core i7-2649MIntel Core i7-2720QMIntel Core i7-2637M
Intel Core i7Intel Core i7Intel Core i7
Sandy BridgeSandy BridgeSandy Bridge
: Core i7 Sandy Bridge
Intel Core i7-2960XM2700 - 3700 MHz4 / 88 MB
Intel Core i7-2860QM2500 - 3600 MHz4 / 88 MB
Intel Core i7-2920XM2500 - 3500 MHz4 / 88 MB
Intel Core i7-2760QM2400 - 3500 MHz4 / 86 MB
Intel Core i7-2820QM2300 - 3400 MHz4 / 88 MB
Intel Core i7-2720QM2200 - 3300 MHz4 / 86 MB
Intel Core i7-2675QM2200 - 3100 MHz4 / 86 MB
Intel Core i7-2670QM2200 - 3100 MHz4 / 86 MB
Intel Core i7-2635QM2000 - 2900 MHz4 / 86 MB
Intel Core i7-2630QM2000 - 2900 MHz4 / 86 MB
Intel Core i7-2640M2800 - 3500 MHz2 / 44 MB
Intel Core i7-2620M2700 - 3400 MHz2 / 44 MB
» Intel Core i7-2649M2300 - 3200 MHz2 / 44 MB
Intel Core i7-2629M2100 - 3000 MHz2 / 44 MB
Intel Core i7-2677M1800 - 2900 MHz2 / 44 MB
Intel Core i7-2637M1700 - 2800 MHz2 / 44 MB
Intel Core i7-2657M1600 - 2700 MHz2 / 44 MB
Intel Core i7-2617M1500 - 2600 MHz2 / 44 MB
Intel Core i7-2960XM2700 - 3700 MHz4 / 88 MB
Intel Core i7-2860QM2500 - 3600 MHz4 / 88 MB
Intel Core i7-2920XM2500 - 3500 MHz4 / 88 MB
Intel Core i7-2760QM2400 - 3500 MHz4 / 86 MB
Intel Core i7-2820QM2300 - 3400 MHz4 / 88 MB
» Intel Core i7-2720QM2200 - 3300 MHz4 / 86 MB
Intel Core i7-2675QM2200 - 3100 MHz4 / 86 MB
Intel Core i7-2670QM2200 - 3100 MHz4 / 86 MB
Intel Core i7-2635QM2000 - 2900 MHz4 / 86 MB
Intel Core i7-2630QM2000 - 2900 MHz4 / 86 MB
Intel Core i7-2640M2800 - 3500 MHz2 / 44 MB
Intel Core i7-2620M2700 - 3400 MHz2 / 44 MB
Intel Core i7-2649M2300 - 3200 MHz2 / 44 MB
Intel Core i7-2629M2100 - 3000 MHz2 / 44 MB
Intel Core i7-2677M1800 - 2900 MHz2 / 44 MB
Intel Core i7-2637M1700 - 2800 MHz2 / 44 MB
Intel Core i7-2657M1600 - 2700 MHz2 / 44 MB
Intel Core i7-2617M1500 - 2600 MHz2 / 44 MB
Intel Core i7-2960XM2700 - 3700 MHz4 / 88 MB
Intel Core i7-2860QM2500 - 3600 MHz4 / 88 MB
Intel Core i7-2920XM2500 - 3500 MHz4 / 88 MB
Intel Core i7-2760QM2400 - 3500 MHz4 / 86 MB
Intel Core i7-2820QM2300 - 3400 MHz4 / 88 MB
Intel Core i7-2720QM2200 - 3300 MHz4 / 86 MB
Intel Core i7-2675QM2200 - 3100 MHz4 / 86 MB
Intel Core i7-2670QM2200 - 3100 MHz4 / 86 MB
Intel Core i7-2635QM2000 - 2900 MHz4 / 86 MB
Intel Core i7-2630QM2000 - 2900 MHz4 / 86 MB
Intel Core i7-2640M2800 - 3500 MHz2 / 44 MB
Intel Core i7-2620M2700 - 3400 MHz2 / 44 MB
Intel Core i7-2649M2300 - 3200 MHz2 / 44 MB
Intel Core i7-2629M2100 - 3000 MHz2 / 44 MB
Intel Core i7-2677M1800 - 2900 MHz2 / 44 MB
» Intel Core i7-2637M1700 - 2800 MHz2 / 44 MB
Intel Core i7-2657M1600 - 2700 MHz2 / 44 MB
Intel Core i7-2617M1500 - 2600 MHz2 / 44 MB
2300 - 3200 MHz2200 - 3300 MHz1700 - 2800 MHz
128 KB256 KB128 KB
512 KB1 MB512 KB
4 MB6 MB4 MB
2 / 44 / 82 / 4
25 45 17
624 995 624
32 32 32
149 mm2216 mm2149 mm2
100 °C100 °C100 °C
BGA1023FCBGA1224, FCPGA988BGA1023
HD Graphics 3000 500-1100MHz, integrated DDR3-1333 memory controller, Virtualization, Trusted Execution, Hyper-Threading, Turbo Boost 2.0HD Graphics 3000 (650-1300MHz), DDR-1600 Memory Controller, 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 (500 - 1100 MHz)Intel HD Graphics 3000 (650 - 1300 MHz)Intel HD Graphics 3000 (350 - 1200 MHz)
Intel Core i7 2649MIntel Core i7 2720QMIntel Core i7 2637M
$378 U.S.$289 U.S.

Cinebench R15 - CPU Multi 64Bit
201 Points (5%)
Cinebench R15 - CPU Single 64Bit
93 Points (43%)
Cinebench R11.5 - CPU Multi 64Bit
min: 5.12     avg: 5.3     median: 5.3 (20%)     max: 5.64 Points
min: 2.19     avg: 2.2     median: 2.2 (8%)     max: 2.25 Points
Cinebench R11.5 - CPU Single 64Bit
1.1 Points (45%)
Cinebench R10 - Rendering Single 32Bit
min: 4114     avg: 4167.8     median: 4167 (46%)     max: 4219 Points
min: 3529     avg: 3578     median: 3600 (39%)     max: 3605 Points
Cinebench R10 - Rendering Multiple CPUs 32Bit
min: 13961     avg: 14649.4     median: 14852 (30%)     max: 15301 Points
min: 7046     avg: 7068.7     median: 7074 (14%)     max: 7086 Points
Cinebench R10 - Rendering Multiple CPUs 64Bit
min: 15819     avg: 17946.3     median: 18193 (24%)     max: 19061 Points
min: 8430     avg: 8639     median: 8722 (11%)     max: 8765 Points
Cinebench R10 - Rendering Single CPUs 64Bit
min: 4204     avg: 5084     median: 5236 (51%)     max: 5299 Points
min: 4464     avg: 4469     median: 4471 (43%)     max: 4472 Points
wPrime 2.0x - 1024m *
min: 410.2     avg: 423.1     median: 423.5 (5%)     max: 435.633 seconds
min: 690.5     avg: 744     median: 765.3 (9%)     max: 776.305 seconds
wPrime 2.0x - 32m *
min: 12.13     avg: 13     median: 13.1 (3%)     max: 13.729 seconds
min: 20.3     avg: 21.2     median: 21.7 (4%)     max: 21.701 seconds
WinRAR - Result
min: 2286     avg: 2324.5     median: 2324.5 (27%)     max: 2363 KB/s
X264 HD Benchmark 4.0 - Pass 2
min: 11.95     avg: 12.1     median: 12.1 (0%)     max: 12.23 fps
X264 HD Benchmark 4.0 - Pass 1
min: 68.5     avg: 70.1     median: 69.5 (26%)     max: 72.22 fps
TrueCrypt - Serpent Mean 100MB
min: 0.112     avg: 0.1     median: 0.1 (6%)     max: 0.116 GB/s
TrueCrypt - Twofish Mean 100MB
min: 0.196     avg: 0.2     median: 0.2 (7%)     max: 0.2 GB/s
TrueCrypt - AES Mean 100MB
1.2 GB/s (6%)
3DMark 06 - CPU
min: 5133     avg: 5529.1     median: 5616 (39%)     max: 5772 Points
min: 2814     avg: 2836     median: 2834 (20%)     max: 2860 Points
Super Pi mod 1.5 XS 1M *
min: 11     avg: 11.4     median: 11 (2%)     max: 12.3 Seconds
min: 13.7     avg: 14     median: 14 (3%)     max: 14.32 Seconds
Super Pi mod 1.5 XS 2M *
min: 26     avg: 27     median: 27 (1%)     max: 28.2 Seconds
min: 31.9     avg: 32.3     median: 32 (1%)     max: 33.02 Seconds
Super Pi Mod 1.5 XS 32M *
min: 635     avg: 649.5     median: 647 (3%)     max: 671 Seconds
min: 735.2     avg: 755     median: 757.8 (3%)     max: 772 Seconds
SiSoft Sandra Dhrystone (MIPS)
109640 MIPS (52%)
45450 MIPS (22%)
SiSoft Sandra Whetstone (MFLOPS)
66400 MFLOPS (51%)
29870 MFLOPS (23%)
Windows 7 Experience Index - Processor
7.5 points (96%)
6.9 points (88%)
3DMark Vantage - P CPU no PhysX 1280x1024
min: 11457     avg: 17983.6     median: 18725 (31%)     max: 19716 Points
min: 7546     avg: 7733     median: 7552 (13%)     max: 8101 Points
3DMark 11 - Performance Physics 1280x720
min: 5473     avg: 6494.9     median: 6627 (36%)     max: 7334 points
3258 points (18%)
3DMark - Ice Storm Standard Physics 1280x720
36234 Points (23%)
27910 Points (18%)
3DMark - Ice Storm Unlimited Physics 1280x720 offscreen
29096 Points (34%)
3DMark - Cloud Gate Standard Physics 1280x720
5494 Points (14%)
2382 Points (6%)
3DMark - Fire Strike Physics 1920x1080
7558 Points (28%)
3294 Points (12%)
Geekbench 3 - 32 Bit Multi-Core Score
4566 Points (15%)
Geekbench 3 - 32 Bit Single-Core Score
2288 Points (47%)
Geekbench 4.0 - 64 Bit Multi-Core Score
4800 Points (17%)
Geekbench 4.0 - 64 Bit Single-Core Score
2703 Points (47%)
Geekbench 4.3 - 64 Bit Single-Core Score
2769 Points (44%)
Geekbench 4.3 - 64 Bit Multi-Core Score
5048 Points (14%)
Octane V2 - Total Score
16640 Points (33%)
Power Consumption - Prime95 V28,10 Stress Power Consumption (external Monitor) ultra *
100%
1 2637M +
29.1 Watt (8%)
Power Consumption - Cinebench R15 Multi Power Consumption (external Monitor) ultra *
100%
1 2637M +
30.5 Watt (8%)

Average Benchmarks Intel Core i7-2720QM → 100%

Average Benchmarks Intel Core i7-2637M → 83%

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* Smaller numbers mean a higher performance
1 This benchmark is not used for the average calculation

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> Notebook / Laptop Reviews and News > Benchmarks / Tech > Processor Comparison - Head 2 Head
Redaktion, 2017-09- 8 (Update: 2017-09-11)