Intel Core i7-2920XM vs Intel Core i7-2640M

Intel Core i7-2920XM

► remove Intel 2920XM

The Intel Core i7-2920XM is the fastest quad-core processor for laptops in Q1-2011. Due to the Extreme Edition branding, the CPU should be easy to overclock (unlocked multiplicator). 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 i7-2920XM is now manufactured in 32nm, offers an integrated graphics card and AES functions. Compared to the slower clocked 2820QM, the 2920XM is specified with a higher TDP.

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 Core i7-2920XM 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.

Due to the high Turbo Boost and Hyperthreading, the performance of the Core i7-2920XM can reach levels of the fast desktop Core i5-2500K processor. Compared to the previous generation, the i7-2920XM is up to 42% faster than the old Core i7-940XM processor. Therefore, the performance should be sufficient for even the most demanding tasks like HD video editing or 3D games. Extensive benchmarks can be found at the end of this page and in our review of the new Sandy Bridge quad core processors.

The high TDP rating of the 2920XM enables the usage of the quad core only in large and heavy laptops (usually 15" and up). Compared to the previous generation of quad-cores, however, the TDP improved, as the integrated GPU is now included.

Intel Core i7-2640M

► remove Intel 2640M

The Intel Core i7-2640M is the fastest dual core processor at the time of introduction in Q3 2011 and successor of the slower clocked i7-2620M. 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 2.8 GHz but due to Turbo Boost it can reach 3.3 GHz (2 cores active) and 3.5 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 i7-2640M 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), and in the 2640M it should be similar.

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 i7-2640M is higher than a similar clocked Arrandale Core i7 dual core. The performance should even excel the old high-end quad core models like the Core i7-820QM.

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

Intel Core i7-2920XMIntel Core i7-2640M
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 i7-2920XM2500 - 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 i7-2720QM (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 i7-2640M2800 - 3500 MHz2 / 44 MB
Intel Core i7-2620M (compare)2700 - 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 i7-2920XM2500 - 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 i7-2720QM (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 i7-2640M2800 - 3500 MHz2 / 44 MB
Intel Core i7-2620M (compare)2700 - 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
2500 - 3500 MHz2800 - 3500 MHz
256 KB128 KB
1 MB512 KB
8 MB4 MB
4 / 82 / 4
55 35
995 624
32 32
216 mm2149 mm2
100 °C100 °C
FCPGA988
HD Graphics 3000 (650-1300MHz), DDR3-1066/1333/1600 Memory Controller, HyperThreading, AVX, Quick Sync, VirtualizationHD Graphics 3000, 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)
$1096 U.S.$346 U.S.
Intel Core i7 2920XM

Cinebench R11.5 - CPU Multi 64Bit
min: 5.7     avg: 6     median: 6 (16%)     max: 6.2 Points
min: 3.07     avg: 3.1     median: 3.2 (8%)     max: 3.2 Points
Cinebench R11.5 - CPU Single 64Bit
1.4 Points (55%)
Cinebench R10 - Rendering Single 32Bit
min: 4282     avg: 4387     median: 4378.5 (45%)     max: 4507 Points
min: 4009     avg: 4383     median: 4443 (46%)     max: 4506 Points
Cinebench R10 - Rendering Multiple CPUs 32Bit
min: 16067     avg: 16949     median: 17187.5 (29%)     max: 17355 Points
min: 9691     avg: 9766     median: 9778 (16%)     max: 9833 Points
Cinebench R10 - Rendering Multiple CPUs 64Bit
min: 19727     avg: 20763     median: 20959 (28%)     max: 21407 Points
min: 11067     avg: 11767     median: 11874 (16%)     max: 12037 Points
Cinebench R10 - Rendering Single CPUs 64Bit
min: 5343     avg: 5525     median: 5565 (52%)     max: 5628 Points
min: 5445     avg: 5549     median: 5534 (51%)     max: 5665 Points
wPrime 2.0x - 1024m *
min: 264.9     avg: 277     median: 273.7 (3%)     max: 295 seconds
min: 478.5     avg: 494     median: 489 (6%)     max: 523.632 seconds
wPrime 2.0x - 32m *
min: 8.29     avg: 8.5     median: 8.4 (2%)     max: 8.9 seconds
min: 15     avg: 15.5     median: 15.1 (3%)     max: 16.614 seconds
WinRAR - Result
min: 3296     avg: 3923     median: 3923 (46%)     max: 4550 KB/s
min: 2555     avg: 2632     median: 2620 (31%)     max: 2733 KB/s
X264 HD Benchmark 4.0 - Pass 2
min: 30.4     avg: 30.8     median: 30.8 (20%)     max: 31.2 fps
min: 16.38     avg: 16.9     median: 17 (11%)     max: 17.21 fps
X264 HD Benchmark 4.0 - Pass 1
min: 129.4     avg: 131     median: 131.4 (47%)     max: 133.4 fps
min: 88.74     avg: 91     median: 89.4 (32%)     max: 95 fps
TrueCrypt - Serpent Mean 100MB
min: 0.293     avg: 0.3     median: 0.3 (16%)     max: 0.296 GB/s
min: 0.124     avg: 0.1     median: 0.1 (8%)     max: 0.152 GB/s
TrueCrypt - Twofish Mean 100MB
min: 0.508     avg: 0.5     median: 0.5 (16%)     max: 0.521 GB/s
min: 0.198     avg: 0.2     median: 0.3 (8%)     max: 0.27 GB/s
TrueCrypt - AES Mean 100MB
min: 2.8     avg: 3     median: 3 (15%)     max: 3.1 GB/s
1.6 GB/s (8%)
3DMark 06 - CPU
min: 5944     avg: 6100     median: 6131 (41%)     max: 6206 Points
min: 3882     avg: 3934     median: 3927 (26%)     max: 3978 Points
Super Pi mod 1.5 XS 1M *
min: 10     avg: 10.5     median: 10 (2%)     max: 11.7 Seconds
min: 11     avg: 11.2     median: 11 (2%)     max: 11.66 Seconds
Super Pi mod 1.5 XS 2M *
min: 24     avg: 24.6     median: 24 (1%)     max: 25.9 Seconds
min: 25     avg: 26     median: 26 (1%)     max: 27.04 Seconds
Super Pi Mod 1.5 XS 32M *
min: 580     avg: 600     median: 594 (3%)     max: 620 Seconds
min: 604     avg: 626     median: 634 (3%)     max: 639 Seconds
SiSoft Sandra Dhrystone (MIPS)
min: 118300     avg: 121717     median: 121780 (58%)     max: 125070 MIPS
min: 64300     avg: 64523     median: 64545 (31%)     max: 64700 MIPS
SiSoft Sandra Whetstone (MFLOPS)
min: 71200     avg: 74190     median: 75680 (58%)     max: 75690 MFLOPS
min: 39000     avg: 39255     median: 39135 (30%)     max: 39750 MFLOPS
Windows 7 Experience Index - Processor
min: 7.5     avg: 7.6     median: 7.6 (97%)     max: 7.6 points
min: 7     avg: 7.2     median: 7.1 (91%)     max: 7.6 points
3DMark Vantage - P CPU no PhysX 1280x1024
min: 20540     avg: 21107     median: 21148 (30%)     max: 21592 Points
min: 10127     avg: 10509     median: 10559 (15%)     max: 10838 Points
3DMark 11 - Performance Physics 1280x720
min: 7804     avg: 7915     median: 7914.5 (39%)     max: 8025 points
min: 3902     avg: 4140     median: 4172 (20%)     max: 4320 points
3DMark - Ice Storm Standard Physics 1280x720
26569 Points (17%)
3DMark - Cloud Gate Standard Physics 1280x720
2876 Points (7%)
Geekbench 2 - 32 Bit - Stream
7873 Points (64%)
Geekbench 2 - 32 Bit - Memory
6847 Points (62%)
Geekbench 2 - 32 Bit - Floating Point
7293 Points (14%)
Geekbench 2 - 32 Bit - Integer
6298 Points (13%)
Geekbench 2 - 32 Bit - Total Score
6913 Points (18%)

Average Benchmarks Intel Core i7-2920XM → 100%

Average Benchmarks Intel Core i7-2640M → 79%

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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)