Intel Core i7-2620M vs Intel Core i7-2820QM

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 i7-2820QM

► remove Intel 2820QM

The Intel Core i7-2820QM is a fast high-end quad core processor for laptops. At the time of announcement (Jan. 2011) it was the fastest 45 Watt processor. 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 i7-2820QM is now manufactured in 32nm and offers an integrated graphics card and AES functions. Compared to the slower clocked 2720QM, the 2820QM offers more level 3 cache (8 vs. 6MB).

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 i7-2820QM 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 i7-2820QM is noticeable better (e.g. Cinebench versions) than the previous generation 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 2820QM can be found in the lower section of this page.

The relative high TDP rating of the 2820QM 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 i7-2620MIntel Core i7-2820QM
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 i7-2820QM2300 - 3400 MHz4 / 88 MB
Intel Core i7-2720QM (compare)2200 - 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 i7-2820QM2300 - 3400 MHz4 / 88 MB
Intel Core i7-2720QM (compare)2200 - 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
2700 - 3400 MHz2300 - 3400 MHz
128 KB256 KB
512 KB1 MB
4 MB8 MB
2 / 44 / 8
35 45
624 995
32 32
149 mm2216 mm2
100 °C100 °C
rPGA988B, BGA1023FCBGA1224, FCPGA988
HD Graphics 3000 (650-1300MHz), DDR3-1066/1333 Memory Controller (max 8GB), HyperThreading, AVX, Quick Sync, VirtualizationHD Graphics 3000 (650-1300MHz), DDR-1066/1333/1600 Memory Controller, HyperThreading, AVX, Quick Sync, Virtualization
iGPUIntel HD Graphics 3000 (650 - 1300 MHz)Intel HD Graphics 3000 (650 - 1300 MHz)
$346 U.S.$568 U.S.
Intel Core i7 2620MIntel Core i7 2820QM

Cinebench R11.5 - CPU Multi 64Bit
min: 2     avg: 3     median: 3 (7%)     max: 3 Points
min: 4     avg: 5.2     median: 5 (11%)     max: 5 Points
Cinebench R10 - Rendering Single 32Bit
min: 3532     avg: 4200.4     median: 4333 (47%)     max: 4384 Points
min: 4200     avg: 4273.5     median: 4249 (46%)     max: 4365 Points
Cinebench R10 - Rendering Multiple CPUs 32Bit
min: 7650     avg: 9124.2     median: 9433 (14%)     max: 9632 Points
min: 12641     avg: 14781.5     median: 15043 (23%)     max: 16105 Points
Cinebench R10 - Rendering Multiple CPUs 64Bit
min: 9634     avg: 11272.8     median: 11444 (15%)     max: 11711 Points
min: 16327     avg: 18631     median: 19316 (25%)     max: 20393 Points
Cinebench R10 - Rendering Single CPUs 64Bit
min: 4462     avg: 5324.6     median: 5412 (52%)     max: 5479 Points
min: 5232     avg: 5368.1     median: 5372 (52%)     max: 5468 Points
wPrime 2.0x - 1024m *
min: 494     avg: 525.1     median: 505 (6%)     max: 593 seconds
min: 281     avg: 366.3     median: 360 (4%)     max: 458 seconds
wPrime 2.0x - 32m *
min: 11     avg: 16.3     median: 16 (3%)     max: 19 seconds
min: 8     avg: 10.7     median: 10 (2%)     max: 13 seconds
3DMark 06 - CPU
min: 3039     avg: 3753.1     median: 3827 (26%)     max: 3884 Points
min: 4427     avg: 5485.7     median: 5818 (39%)     max: 5923 Points
Super Pi mod 1.5 XS 1M *
min: 11     avg: 11.5     median: 11 (2%)     max: 14 Seconds
11.2 Seconds (2%)
Super Pi mod 1.5 XS 2M *
min: 26     avg: 27.3     median: 27 (1%)     max: 32 Seconds
min: 23     avg: 29.7     median: 25 (1%)     max: 54 Seconds
Super Pi Mod 1.5 XS 32M *
min: 620     avg: 685.4     median: 640 (3%)     max: 1098 Seconds
min: 618     avg: 628.2     median: 625 (3%)     max: 643 Seconds
SiSoft Sandra Dhrystone (MIPS)
min: 53030     avg: 55805     median: 53870 (26%)     max: 62450 MIPS
min: 83000     avg: 90496.7     median: 87000 (41%)     max: 101490 MIPS
SiSoft Sandra Whetstone (MFLOPS)
min: 37790     avg: 37922.5     median: 37950 (29%)     max: 38000 MFLOPS
min: 23590     avg: 53623.3     median: 66280 (51%)     max: 71000 MFLOPS
PCMark 05 - Standard 1024x768
13842 Points (87%)
Windows 7 Experience Index - Processor
min: 6     avg: 7.1     median: 7 (100%)     max: 7 points
7.5 points (107%)
3DMark Vantage - P CPU no PhysX 1280x1024
min: 8605     avg: 11160.9     median: 10271 (14%)     max: 21984 Points
min: 16115     avg: 18440.5     median: 18520 (26%)     max: 20526 Points
3DMark 11 - Performance Physics 1280x720
min: 3296     avg: 3946.6     median: 4060 (21%)     max: 4362 points
min: 5165     avg: 6335     median: 6724 (35%)     max: 7245 points

Average Benchmarks Intel Core i7-2620M → 100%

Average Benchmarks Intel Core i7-2820QM → 131%

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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)