Intel Core i7-2720QM vs Intel Core i7-2620M

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 i7-2620M

► remove Intel 2620M

The Intel Core i7-2620M is the fastest dual core processor at the time of introduction in Q1 2011. 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 2.7 GHz but due to Turbo Boost it can reach 3.2 GHz (2 cores active) and 3.4 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 i7-2620M 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).

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 i7-2620M is higher than a similar clocked Arrandale Core i7. In synthetic benchmarks the performance ranges from the old Core i7-620M to the Core i7-820QM quad core processor. On average it should be on a level of the fast Core i7-640M.

The 35W TDP rating includes the integrated GPU and memory controller.

Intel Core i7-2720QMIntel Core i7-2620M
Intel Core i7Intel Core i7
Sandy BridgeSandy Bridge
: Core i7 Sandy Bridge
Intel Core i7-2960XM (compare)2700 - 3700 MHz4 / 88 MB
Intel Core i7-2860QM (compare)2500 - 3600 MHz4 / 88 MB
Intel Core i7-2920XM (compare)2500 - 3500 MHz4 / 88 MB
Intel Core i7-2760QM (compare)2400 - 3500 MHz4 / 86 MB
Intel Core i7-2820QM (compare)2300 - 3400 MHz4 / 88 MB
» Intel Core i7-2720QM2200 - 3300 MHz4 / 86 MB
Intel Core i7-2675QM (compare)2200 - 3100 MHz4 / 86 MB
Intel Core i7-2670QM (compare)2200 - 3100 MHz4 / 86 MB
Intel Core i7-2635QM (compare)2000 - 2900 MHz4 / 86 MB
Intel Core i7-2630QM (compare)2000 - 2900 MHz4 / 86 MB
Intel Core i7-2640M (compare)2800 - 3500 MHz2 / 44 MB
Intel Core i7-2620M2700 - 3400 MHz2 / 44 MB
Intel Core i7-2649M (compare)2300 - 3200 MHz2 / 44 MB
Intel Core i7-2629M (compare)2100 - 3000 MHz2 / 44 MB
Intel Core i7-2677M (compare)1800 - 2900 MHz2 / 44 MB
Intel Core i7-2637M (compare)1700 - 2800 MHz2 / 44 MB
Intel Core i7-2657M (compare)1600 - 2700 MHz2 / 44 MB
Intel Core i7-2617M (compare)1500 - 2600 MHz2 / 44 MB
Intel Core i7-2960XM (compare)2700 - 3700 MHz4 / 88 MB
Intel Core i7-2860QM (compare)2500 - 3600 MHz4 / 88 MB
Intel Core i7-2920XM (compare)2500 - 3500 MHz4 / 88 MB
Intel Core i7-2760QM (compare)2400 - 3500 MHz4 / 86 MB
Intel Core i7-2820QM (compare)2300 - 3400 MHz4 / 88 MB
Intel Core i7-2720QM2200 - 3300 MHz4 / 86 MB
Intel Core i7-2675QM (compare)2200 - 3100 MHz4 / 86 MB
Intel Core i7-2670QM (compare)2200 - 3100 MHz4 / 86 MB
Intel Core i7-2635QM (compare)2000 - 2900 MHz4 / 86 MB
Intel Core i7-2630QM (compare)2000 - 2900 MHz4 / 86 MB
Intel Core i7-2640M (compare)2800 - 3500 MHz2 / 44 MB
» Intel Core i7-2620M2700 - 3400 MHz2 / 44 MB
Intel Core i7-2649M (compare)2300 - 3200 MHz2 / 44 MB
Intel Core i7-2629M (compare)2100 - 3000 MHz2 / 44 MB
Intel Core i7-2677M (compare)1800 - 2900 MHz2 / 44 MB
Intel Core i7-2637M (compare)1700 - 2800 MHz2 / 44 MB
Intel Core i7-2657M (compare)1600 - 2700 MHz2 / 44 MB
Intel Core i7-2617M (compare)1500 - 2600 MHz2 / 44 MB
2200 - 3300 MHz2700 - 3400 MHz
256 KB128 KB
1 MB512 KB
6 MB4 MB
4 / 82 / 4
45 35
995 624
32 32
216 mm2149 mm2
100 °C100 °C
FCBGA1224, FCPGA988rPGA988B, BGA1023
HD Graphics 3000 (650-1300MHz), DDR-1600 Memory Controller, HyperThreading, AVX, Quick Sync, VirtualizationHD Graphics 3000 (650-1300MHz), DDR3-1066/1333 Memory Controller (max 8GB), HyperThreading, AVX, Quick Sync, Virtualization
iGPUIntel HD Graphics 3000 (650 - 1300 MHz)Intel HD Graphics 3000 (650 - 1300 MHz)
$378 U.S.$346 U.S.
Intel Core i7 2720QMIntel Core i7 2620M

Cinebench R11.5 - CPU Multi 64Bit
5.3 Points (16%)
min: 2     avg: 3     median: 3 (9%)     max: 3 Points
Cinebench R10 - Rendering Single 32Bit
min: 4114     avg: 4167.8     median: 4167 (46%)     max: 4219 Points
min: 3532     avg: 4200.4     median: 4333 (47%)     max: 4384 Points
Cinebench R10 - Rendering Multiple CPUs 32Bit
min: 13961     avg: 14649.4     median: 14852 (30%)     max: 15301 Points
min: 7650     avg: 9124.2     median: 9433 (19%)     max: 9632 Points
Cinebench R10 - Rendering Multiple CPUs 64Bit
min: 15819     avg: 17946.3     median: 18193 (24%)     max: 19061 Points
min: 9634     avg: 11272.8     median: 11444 (15%)     max: 11711 Points
Cinebench R10 - Rendering Single CPUs 64Bit
min: 4204     avg: 5084     median: 5236 (51%)     max: 5299 Points
min: 4462     avg: 5324.6     median: 5412 (52%)     max: 5479 Points
wPrime 2.0x - 1024m *
min: 410     avg: 423.1     median: 423 (5%)     max: 435 seconds
min: 494     avg: 525.1     median: 505 (6%)     max: 593 seconds
wPrime 2.0x - 32m *
min: 12     avg: 13     median: 13 (3%)     max: 13 seconds
min: 11     avg: 16.3     median: 16 (3%)     max: 19 seconds
3DMark 06 - CPU
min: 5133     avg: 5529.1     median: 5616 (38%)     max: 5772 Points
min: 3039     avg: 3753.1     median: 3827 (26%)     max: 3884 Points
Super Pi mod 1.5 XS 1M *
min: 11     avg: 11.4     median: 11 (2%)     max: 12 Seconds
min: 11     avg: 11.5     median: 11 (2%)     max: 14 Seconds
Super Pi mod 1.5 XS 2M *
min: 26     avg: 27     median: 27 (1%)     max: 28 Seconds
min: 26     avg: 27.3     median: 27 (1%)     max: 32 Seconds
Super Pi Mod 1.5 XS 32M *
min: 635     avg: 649.5     median: 647 (3%)     max: 671 Seconds
min: 620     avg: 685.4     median: 640 (3%)     max: 1098 Seconds
SiSoft Sandra Dhrystone (MIPS)
109640 MIPS (52%)
min: 53030     avg: 55805     median: 53870 (26%)     max: 62450 MIPS
SiSoft Sandra Whetstone (MFLOPS)
66400 MFLOPS (51%)
min: 37790     avg: 37922.5     median: 37950 (29%)     max: 38000 MFLOPS
Windows 7 Experience Index - Processor
7.5 points (107%)
min: 6     avg: 7.1     median: 7 (100%)     max: 7 points
3DMark Vantage - P CPU no PhysX 1280x1024
min: 11457     avg: 17983.6     median: 18725 (27%)     max: 19716 Points
min: 8605     avg: 11160.9     median: 10271 (15%)     max: 21984 Points
3DMark 11 - Performance Physics 1280x720
min: 5473     avg: 6494.9     median: 6627 (36%)     max: 7334 points
min: 3296     avg: 3946.6     median: 4060 (22%)     max: 4362 points
3DMark - Ice Storm Standard Physics 1280x720
36234 Points (23%)
3DMark - Cloud Gate Standard Physics 1280x720
5494 Points (14%)
3DMark - Fire Strike Physics 1920x1080
7558 Points (26%)

Average Benchmarks Intel Core i7-2720QM → 100%

Average Benchmarks Intel Core i7-2620M → 80%

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* 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)