Intel Core i7-840QM

Intel 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.

SeriesIntel Core i7
CodenameClarksfield
Clock Rate1860 - 3200 MHz
Front Side Bus2500 MHz
Level 1 Cache256 KB
Level 2 Cache1024 KB
Level 3 Cache8196 KB
Number of Cores / Threads4 / 8
Max. Power Consumption (TDP = Thermal Design Power)45 Watt
Transistor Count774 Million
Manufacturing Technology45 nm
Die Size296 mm2
Max. Temperature100 °C
SocketRPGA989
Featuresintegrated 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
64 Bit64 Bit support
Hardware VirtualizationVT-x, VT-d
Starting Price $568 U.S.
Announcement Date06/01/2010
Product Link (external)Intel Core i7 840QM

CPU Benchmarks

3DMark 06 - CPU:
0% 100%
min: 3435     avg: 3518.8 (40.14%)     max: 3577 Points
Super Pi mod 1.5 XS 1M:
0% 100%
min: 13     avg: 13.1 (99.1%)     max: 13.26 Seconds*
Super Pi mod 1.5 XS 2M:
0% 100%
min: 29     avg: 29.4 (99.64%)     max: 30.108 Seconds*
Super Pi Mod 1.5 XS 32M:
0% 100%
min: 727.71     avg: 734.2 (96.79%)     max: 738 Seconds*
SiSoft Sandra Dhrystone (MIPS):
0% 100%
min: 54820     avg: 54820 (26.01%)     max: 54820 MIPS
SiSoft Sandra Whetstone (MFLOPS):
0% 100%
min: 38190     avg: 38190 (29.3%)     max: 38190 MFLOPS
PCMark Vantage: Result 1024x768
0% 100%
min: 6153     avg: 6377.5 (24.47%)     max: 6602 Points
Cinebench R10: Rendering Single 32Bit
0% 100%
min: 3354     avg: 3426.3 (52.72%)     max: 3474 Points
Cinebench R10: Rendering Multiple CPUs 32Bit
0% 100%
min: 9007     avg: 9316.3 (34.14%)     max: 9726 Points
Cinebench R10: Rendering Multiple CPUs 64Bit
0% 100%
min: 11085     avg: 11521.2 (30.49%)     max: 11857 Points
Cinebench R10: Rendering Single CPUs 64Bit
0% 100%
min: 4083     avg: 4200 (16.85%)     max: 4319 Points
3DMark Vantage: P CPU no PhysX 1280x1024
0% 100%
min: 12224     avg: 14498.3 (25.49%)     max: 19033 Points
wPrime 2.0x: 32m
0% 100%
min: 15.785     avg: 32 (94.43%)     max: 40.2 seconds*
wPrime 2.0x: 1024m
0% 100%
min: 476.677     avg: 1014.4 (89.38%)     max: 1284.2 seconds*
Windows 7 Experience Index: Processor
0% 100%
min: 7.2     avg: 7.2 (90.48%)     max: 7.2 points
Cinebench R11.5: CPU Multi 64Bit
0% 100%
min: 3.21     avg: 3.3 (26.41%)     max: 3.45 Points
3DMark 11: Performance Physics 1280x720
0% 100%
min: 4686     avg: 4686 (38.81%)     max: 4686 points
- Range of benchmarks for this CPU
- Average benchmark score

Cinebench R10 in comparison
Intel Atom Z670 (min)
691 
...
Intel Core i7 2620M
9124.2 
Intel Core i7 820QM
9174.4 
AMD A-Series (Desktop) AMD A10-5800K
9275.5 
Intel Core i7 840QM
9316.3 
Intel Core 2 Extreme (Desktop) QX6700
9520 
AMD A-Series (Desktop) A8-3850
9534 
Intel Core i5 3320M
9553.6 
...
Intel Core i7 (Desktop) 3960X (max)
27189.5 

Reviews for the Intel Core i7 840QM processor

Dell XPS 15 FHD (NVIDIA GeForce GT 435M, 15.6")
» Review Dell XPS 15 FHD Notebook - Review
» Dell XPS 15 FHD - External Review

Dell XPS 17 (NVIDIA GeForce GT 445M, 17.3")
» Review Dell XPS 17 Notebook - Review
» Dell XPS 17 - External Review

HP EliteBook 8740w-WD943EA (NVIDIA Quadro FX 3800M, 17.0")
» HP EliteBook 8740w-WD943EA - External Review

» Mobile CPU Comparison
Comparison of all mobile CPU series

» Mobile Processors - Benchmarklist
Benchmarklist of all known CPUs that are used in laptops (desktop and laptop CPUs)

Other CPUs of the series Intel Core i7

» Intel Core i7 4940MX
   3.1 GHz / 1 MB + 8 MB
» Intel Core i7 4930MX
   3 GHz / 1 MB + 8 MB
» Intel Core i7 4910MQ
   2.9 GHz / 1 MB + 8 MB
» Intel Core i7 3940XM
   3 GHz / 1 MB + 8 MB
» Intel Core i7 4900MQ
   2.8 GHz / 1 MB + 8 MB
» Intel Core i7 4960HQ
   2.6 GHz / 1 MB + 6 MB
» Intel Core i7 4810MQ
   2.8 GHz / 1 MB + 6 MB
» Intel Core i7 3920XM
   2.9 GHz / 1 MB + 8 MB
» Intel Core i7 4800MQ
   2.7 GHz / 1 MB + 6 MB
» Intel Core i7 4950HQ
   2.4 GHz / 1 MB + 6 MB
» Intel Core i7 4860HQ
   2.4 GHz / 1 MB + 6 MB
» Intel Core i7 3840QM
   2.8 GHz / 1 MB + 8 MB
» Intel Core i7 4850HQ
   2.3 GHz / 1 MB + 6 MB
» Intel Core i7 4710HQ
   2.5 GHz / 1 MB + 6 MB
» Intel Core i7 4710MQ
   2.5 GHz / 1 MB + 6 MB
» Intel Core i7 3820QM
   2.7 GHz / 1 MB + 8 MB
» Intel Core i7 3740QM
   2.7 GHz / 1 MB + 6 MB
» Intel Core i7 3720QM
   2.6 GHz / 1 MB + 6 MB
» Intel Core i7 4700HQ
   2.4 GHz / 1 MB + 6 MB
» Intel Core i7 4700MQ
   2.4 GHz / 1 MB + 6 MB
» Intel Core i7 4760HQ
   2.1 GHz / 1 MB + 6 MB
» Intel Core i7 2960XM
   2.7 GHz / 1 MB + 8 MB
» Intel Core i7 4712HQ
   2.3 GHz / 1 MB + 6 MB
» Intel Core i7 4712MQ
   2.3 GHz / 1 MB + 6 MB
» Intel Core i7 4750HQ
   2 GHz / 1 MB + 6 MB
» Intel Core i7 3635QM
   2.4 GHz / 1 MB + 6 MB
» Intel Core i7 3630QM
   2.4 GHz / 1 MB + 6 MB
» Intel Core i7 4702HQ
   2.2 GHz / 1 MB + 6 MB
» Intel Core i7 4702MQ
   2.2 GHz / 1 MB + 6 MB
» Intel Core i7 2860QM
   2.5 GHz / 1 MB + 8 MB
» Intel Core i7 2920XM
   2.5 GHz / 1 MB + 8 MB
» Intel Core i7 3615QM
   2.3 GHz / 1 MB + 6 MB
» Intel Core i7 3610QM
   2.3 GHz / 1 MB + 6 MB
» Intel Core i7 3632QM
   2.2 GHz / 1 MB + 6 MB
» Intel Core i7 2760QM
   2.4 GHz / 1 MB + 6 MB
» Intel Core i7 2820QM
   2.3 GHz / 1 MB + 8 MB
» Intel Core i7 3612QM
   2.1 GHz / 1 MB + 6 MB
» Intel Core i7 2720QM
   2.2 GHz / 1 MB + 6 MB
» Intel Core i7 2675QM
   2.2 GHz / 1 MB + 6 MB
» Intel Core i7 2670QM
   2.2 GHz / 1 MB + 6 MB
» Intel Core i7 2635QM
   2 GHz / 1 MB + 6 MB
» Intel Core i7 2630QM
   2 GHz / 1 MB + 6 MB
» Intel Core i7 4610M
   3 GHz / 0.5 MB + 4 MB
» Intel Core i7 940XM
   2.13 GHz / 1 MB + 8 MB
» Intel Core i7 4600M
   2.9 GHz / 0.5 MB + 4 MB
» Intel Core i7 920XM
   2 GHz / 1 MB + 8 MB
» Intel Core i7 3540M
   3 GHz / 0.5 MB + 4 MB
» Intel Core i7 4558U
   2.8 GHz / 0.5 MB + 4 MB
» Intel Core i7 3520M
   2.9 GHz / 0.5 MB + 4 MB
» Intel Core i7 2640M
   2.8 GHz / 0.5 MB + 4 MB
» Intel Core i7 840QM
   1.86 GHz / 1 MB + 8 MB
» Intel Core i7 2620M
   2.7 GHz / 0.5 MB + 4 MB
» Intel Core i7 4600U
   2.1 GHz / 0.5 MB + 4 MB
» Intel Core i7 4650U
   1.7 GHz / 0.5 MB + 4 MB
» Intel Core i7 3687U
   2.1 GHz / 0.5 MB + 4 MB
» Intel Core i7 4510U
   2 GHz / 0.5 MB + 4 MB
» Intel Core i7 640M
   2.8 GHz / 0.5 MB + 4 MB
» Intel Core i7 820QM
   1.73 GHz / 1 MB + 8 MB
» Intel Core i7 3667U
   2 GHz / 0.5 MB + 4 MB
» Intel Core i7 4500U
   1.8 GHz / 0.5 MB + 4 MB
» Intel Core i7 4550U
   1.5 GHz / 0.5 MB + 4 MB
» Intel Core i7 740QM
   1.73 GHz / 1 MB + 6 MB
» Intel Core i7 3537U
   2 GHz / 0.5 MB + 4 MB
» Intel Core i7 3517U
   1.9 GHz / 0.5 MB + 4 MB
» Intel Core i7 620M
   2.66 GHz / 0.5 MB + 4 MB
» Intel Core i7 720QM
   1.6 GHz / 1 MB + 6 MB
» Intel Core i7 2649M
   2.3 GHz / 0.5 MB + 4 MB
» Intel Core i7 4610Y
   1.7 GHz / 0.5 MB + 4 MB
» Intel Core i7 2629M
   2.1 GHz / 0.5 MB + 4 MB
» Intel Core i7 2677M
   1.8 GHz / 0.5 MB + 4 MB
» Intel Core i7 660LM
   2.27 GHz / 0.5 MB + 4 MB
» Intel Core i7 2637M
   1.7 GHz / 0.5 MB + 4 MB
» Intel Core i7 2657M
   1.6 GHz / 0.5 MB + 4 MB
» Intel Core i7 3689Y
   1.5 GHz / 0.5 MB + 4 MB
» Intel Core i7 2617M
   1.5 GHz / 0.5 MB + 4 MB
» Intel Core i7 640LM
   2.13 GHz / 0.5 MB + 4 MB
» Intel Core i7 620LM
   2 GHz / 0.5 MB + 4 MB
» Intel Core i7 680UM
   1.47 GHz / 0.5 MB + 4 MB
» Intel Core i7 660UM
   1.33 GHz / 0.5 MB + 4 MB
» Intel Core i7 640UM
   1.2 GHz / 0.5 MB + 4 MB
» Intel Core i7 620UM
   1.06 GHz / 0.5 MB + 4 MB

Surrounding CPUs

- Intel Core i7 2640M
   2.8 GHz / 0.5 MB + 4 MB
- Intel Core i5 3320M
   2.6 GHz / 0.5 MB + 3 MB
- Intel Core i5 4258U
   2.4 GHz / 0.5 MB + 3 MB
» Intel Core i7 840QM
   1.86 GHz / 1 MB + 8 MB
+ Intel Core i5 3230M
   2.6 GHz / 512 KB + 3072 KB
+ AMD A-Series (Desktop) AMD A8-5600K
   3.6 GHz / 4096 KB
+ Intel Core i7 2620M
   2.7 GHz / 512 KB + 4096 KB
+ Intel Core i7 4600U
   2.1 GHz / 512 KB + 4096 KB
+ Intel Core i7 4650U
   1.7 GHz / 512 KB + 4096 KB
> Notebook / Laptop Reviews and News > FAQ / Tips / Technics > Notebook Processors > Intel Core i7 > Intel Core i7 840QM Notebook Processor
Author: Klaus Hinum, 2010-05-19 (Update: 2012-05-26)