Intel Core i7-840QM vs vs ARM Cortex A8 1.2 GHz

Intel Core i7-840QM

The Intel Core i7 840QM is a high end quad core CPU in 2010. It features 4 cores (quad core CPU) and Hyperthreading. Therefore, 8 threads can be worked on simultaneously.

Because of the Turbo Mode, the CPU is clocked with up to 3.2 GHz (if only one core is used, 2.93 for two cores, and 2 ghz with 4 cores) and therefore can perform very well in single core applications like older games.

The Core i7 line has an integrated memory controller for DDR3 bars (1066 or 1333) supporting a maximum of 8 GB. Therefore, the memory performance is very good (compared to older CPUs with external memory controllers). Still, this also leads to the higher TDP of the whole chip. ECC memory is not supported by the 840QM.

The Core micro-architecture is still very similar to the one used in the Core 2 CPUs, therefore the performance per MHz (neglecting the integrated memory controller, hyperthreading and Turbo Boost) is similar.

The power consumption of up to 45 Watt (TDP) is quite high for a laptop CPU and because of the Turbo Mode, the power consumption should reach these high values. Therefore, the CPU is only suited for large laptops.

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ARM Cortex A8 1.2 GHz

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Model

Intel Core i7-840QM

ARM Cortex A8 1.2 GHz

Series

Intel Core i7

Codename

Clarksfield

Series:

Intel Core i7-940XM	2.13 - 3.33 GHz	4 / 8	8 MB L3
Intel Core i7-920XM	2 - 3.2 GHz	4 / 8	8 MB L3
Intel Core i7-840QM «	1.86 - 3.2 GHz	4 / 8	8 MB L3
Intel Core i7-820QM	1.73 - 3.06 GHz	4 / 8	8 MB L3
Intel Core i7-740QM	1.73 - 2.93 GHz	4 / 8	6 MB L3
Intel Core i7-720QM	1.6 - 2.8 GHz	4 / 8	6 MB L3

HiSilicon Kirin 9000W	1.53 - 2.49 GHz	12 / 12
UNISOC Tiger T310	1.8 - 2 GHz	4 / 4
Rockchip RK3288	1.8 GHz	4 / 4
Apple A6x	1.4 GHz	2
Apple A6	1 GHz	2
Apple S5		2 / 2
HiSilicon k3v2 Hi3620	1.2 GHz	4 / 4
Rockchip RK3066 1.5 GHz	1.5 GHz	2 / 2
Amlogic AML8726-MX	1.5 GHz	2 / 2
Rockchip RK3168	1.2 GHz	2 / 2
Rockchip RK2918 1.2 GHz	1.2 GHz	1 / 1
ARM Cortex A8 1.2 GHz «	1.2 GHz	1 / 1
Telechips TCC8803 1GHz	1 GHz	1 / 1
Loongson 2F 900MHz	0.9 GHz	1 / 1
CSR8670	0.08 GHz	2
ARM Cortex-M4
HiSilicon Hi6262
DK3.5+ST		2
unknown

Clock

1860 - 3200 MHz

1200 MHz

FSB

2500

L1 Cache

256 KB

L2 Cache

1 MB

L3 Cache

8 MB

Cores / Threads

4 / 8

1 / 1

TDP

45 Watt

Transistors

774 Million

Technology

45 nm

Die Size

296 mm²

max. Temp.

100 °C

Socket

RPGA989

Features

integrated DDR3-1066/1333 dual-channel memory controller, Turbo Boost, Hyper Threading, Virtualization Technology VT-x / VT-d, Trusted Execution Technology, Intel 64, Idel States, Enhanced Speedstep, Thermal Monitoring, Execute Disable Bit

Architecture

x86

ARM

$568 U.S.

Announced

Manufacturer

ark.intel.com

Benchmarks

Cinebench R11.5 - Cinebench R11.5 CPU Multi 64 Bit

100%

Model	CPU	GPU	RAM	Value
Fujitsu Celsius H700 LKN:H7000WF011PL	840QM	Quadro FX 880M 550 / 790 MHz 1 GB	4 GB	3.21
Dell XPS 15 FHD	840QM	GeForce GT 435M 650 / 800 MHz 2 GB	4 GB	3.3
Dell XPS 17	840QM	GeForce GT 445M 590 / 800 MHz 3 GB	4 GB	3.31
SCHENKER XMG8.c 840qm	840QM	GeForce GTX 285M SLI 600 / 1000 MHz 1 GB	4 GB	3.45

ERROR: No CPU found with the ID:840

Intel Core i7-840QM vs vs ARM Cortex A8 1.2 GHz