Intel Core i7-2657M vs Intel Core i7-2820QM vs Intel Core i7-2670QM

Intel Core i7-2657M

► remove

The Intel Core i7-2657M is power efficient ULV (Ultra Low Voltage) processor for thin and light laptops. The base frequency of 1.6 GHz is relatively low, but due to Turbo Boost 2.0, the CPU may clock up to 2.7 GHz (on core loaded, 2.4 GHz with both cores loaded). However, this depends on the cooling and power consumption of the laptop. Due to HyperThreading, the i7-2657M is able to handle 4 threads in parallel. Compared to the slower i7-2617M, the 2657M offers a higher clock speed (processor core and turbo, graphics turbo).

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 350 or 1000MHz (Turbo Boost). Due to the slower clock rate, compared to HD Graphics 3000 in 35W and 45W processors (usually clocked at 650-1100/1300MHz 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. In our benchmarks (see below), the ULV processor was as fast as a Core i3-2310M due to the high Turbo Boost frequencies. 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 2657M CPU in small subnotebooks.

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 i7-2670QM

► remove Intel 2670QM

The Intel Core i7-2670QM 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 2670QM offers higher base and turbo frequencies by 200MHz. Compared to the faster Core i7, the 2670QM 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 2670QM it is clocked from  650-1100MHz (Turbo Boost). The Core i7-2675QM in comparison offers a higher Turbo Boost frequency of 1200MHz 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 i7-2670QM 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 i7-2657MIntel Core i7-2820QMIntel Core i7-2670QM
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
1600 - 2700 MHz2300 - 3400 MHz2200 - 3100 MHz
128 KB256 KB256 KB
512 KB1 MB1 MB
4 MB8 MB6 MB
2 / 44 / 84 / 8
17 45 45
624 995 995
32 32 32
149 mm2216 mm2216 mm2
100 °C100 °C
BGA1023FCBGA1224, FCPGA988
Turbo 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 BitHD Graphics 3000 (650-1300MHz), DDR-1066/1333/1600 Memory Controller, HyperThreading, AVX, Quick Sync, VirtualizationHD Graphics 3000, DDR-1333 Memory Controller, HyperThreading, AVX, Quick Sync, Virtualization (VT-x)
iGPUIntel HD Graphics 3000 (350 - 1000 MHz)Intel HD Graphics 3000 (650 - 1300 MHz)Intel HD Graphics 3000 (650 - 1100 MHz)
$317 U.S.$568 U.S.
Intel Core i7 2657MIntel Core i7 2820QM

Cinebench R11.5 - CPU Multi 64Bit
1.9 Points (5%)
min: 4.41     avg: 5.2     median: 5.5 (14%)     max: 5.81 Points
min: 4.85     avg: 5.2     median: 5.2 (13%)     max: 5.34 Points
Cinebench R10 - Rendering Single 32Bit
3491 Points (36%)
min: 4200     avg: 4274     median: 4249.5 (44%)     max: 4365 Points
min: 3685     avg: 3879     median: 3899.5 (40%)     max: 3998 Points
Cinebench R10 - Rendering Multiple CPUs 32Bit
6229 Points (10%)
min: 12641     avg: 14782     median: 15043.5 (25%)     max: 16105 Points
min: 14121     avg: 14804     median: 14842.5 (25%)     max: 15164 Points
Cinebench R10 - Rendering Multiple CPUs 64Bit
7715 Points (10%)
min: 16327     avg: 18631     median: 19316 (25%)     max: 20393 Points
min: 17228     avg: 17967     median: 18076 (24%)     max: 18345 Points
Cinebench R10 - Rendering Single CPUs 64Bit
4376 Points (41%)
min: 5232     avg: 5368     median: 5372 (50%)     max: 5468 Points
min: 4628     avg: 4823     median: 4848 (45%)     max: 4960 Points
wPrime 2.0x - 1024m *
min: 281     avg: 366     median: 360.2 (4%)     max: 458.561 seconds
min: 303     avg: 322     median: 328.1 (4%)     max: 334.632 seconds
wPrime 2.0x - 32m *
min: 8.27     avg: 10.7     median: 10 (2%)     max: 13.635 seconds
min: 9.5     avg: 10.3     median: 10.6 (2%)     max: 10.978 seconds
WinRAR - Result
min: 4037     avg: 4149     median: 4140 (48%)     max: 4270 KB/s
X264 HD Benchmark 4.0 - Pass 2
min: 26.32     avg: 26.6     median: 26.5 (17%)     max: 26.93 fps
X264 HD Benchmark 4.0 - Pass 1
min: 71.72     avg: 101     median: 115.1 (41%)     max: 115.6 fps
TrueCrypt - Serpent Mean 100MB
min: 0.25     avg: 0.3     median: 0.3 (13%)     max: 0.258 GB/s
TrueCrypt - Twofish Mean 100MB
min: 0.443     avg: 0.4     median: 0.4 (0%)     max: 0.453 GB/s
TrueCrypt - AES Mean 100MB
min: 2.5     avg: 2.6     median: 2.7 (14%)     max: 2.7 GB/s
3DMark 06 - CPU
2546 Points (17%)
min: 4427     avg: 5486     median: 5818.5 (39%)     max: 5923 Points
min: 4617     avg: 5333     median: 5400.5 (36%)     max: 5464 Points
Super Pi mod 1.5 XS 1M *
14 Seconds (3%)
min: 11     avg: 11.2     median: 11 (2%)     max: 11.6 Seconds
12 Seconds (3%)
Super Pi mod 1.5 XS 2M *
32 Seconds (1%)
min: 23.1     avg: 29.7     median: 25 (1%)     max: 54 Seconds
min: 27     avg: 28.1     median: 28 (1%)     max: 29 Seconds
Super Pi Mod 1.5 XS 32M *
751 Seconds (3%)
min: 618     avg: 628     median: 625 (3%)     max: 643.96 Seconds
min: 665     avg: 677     median: 675 (3%)     max: 693 Seconds
SiSoft Sandra Dhrystone (MIPS)
40570 MIPS (19%)
min: 83000     avg: 90497     median: 87000 (41%)     max: 101490 MIPS
min: 89820     avg: 99008     median: 100470 (48%)     max: 103490 MIPS
SiSoft Sandra Whetstone (MFLOPS)
26000 MFLOPS (20%)
min: 23590     avg: 53623     median: 66280 (51%)     max: 71000 MFLOPS
min: 65680     avg: 66132     median: 66000 (51%)     max: 66630 MFLOPS
PCMark 05 - Standard 1024x768
13842 Points (87%)
Windows 7 Experience Index - Processor
6.6 points (85%)
min: 7.4     avg: 7.5     median: 7.5 (96%)     max: 7.5 points
7.5 points (96%)
3DMark Vantage - P CPU no PhysX 1280x1024
7732 Points (11%)
min: 16115     avg: 18441     median: 18520 (26%)     max: 20526 Points
min: 16224     avg: 18129     median: 18363 (26%)     max: 18863 Points
3DMark 11 - Performance Physics 1280x720
3102 points (15%)
min: 5165     avg: 6335     median: 6724 (33%)     max: 7245 points
min: 6064     avg: 6437     median: 6490 (32%)     max: 6712 points

Average Benchmarks Intel Core i7-2657M → 100%

Average Benchmarks Intel Core i7-2820QM → 170%

Average Benchmarks Intel Core i7-2670QM → 152%

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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)