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.
Series Intel Core i7 Codename Clarksfield Series: Core i7 Clarksfield Clock Rate 1860 - 3200 MHz Front Side Bus 2500 Level 1 Cache 256 KB Level 2 Cache 1 MB Level 3 Cache 8 MB Number of Cores / Threads 4 / 8 Power Consumption (TDP = Thermal Design Power) 45 Watt Transistor Count 774 Million Manufacturing Technology 45 nm Die Size 296 mm2 Max. Temperature 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 64 Bit 64 Bit support Architecture x86 Starting Price $568 U.S. Announcement Date 06/01/2010 Product Link (external) ark.intel.com
Benchmarks Cinebench R11.5 - Cinebench R11.5 CPU Multi 64 Bit
min: 3.21 avg: 3.3 median: 3.3 (4%) max: 3.45 Points
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max:
Cinebench R10 - Cinebench R10 Rend. Single (32bit)
min: 3354 avg: 3426 median: 3438.5 (21%) max: 3474 points
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max:
Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
min: 9007 avg: 9316 median: 9266 (7%) max: 9726 points
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max:
Cinebench R10 - Cinebench R10 Rend. Multi (64bit)
min: 11085 avg: 11521 median: 11513 (8%) max: 11857 Points
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max:
Cinebench R10 - Cinebench R10 Rend. Single (64bit)
min: 4083 avg: 4200 median: 4199 (5%) max: 4319 Points
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wPrime 2.10 - wPrime 2.0 1024m *
min: 476.7 avg: 1014 median: 1282 (15%) max: 1284 s
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VIA C3-M C3-M-1200
wPrime 2.10 - wPrime 2.0 32m *
min: 15.78 avg: 32 median: 40 (8%) max: 40.2 s
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3DMark 06 - CPU - 3DMark 06 - CPU
min: 3435 avg: 3519 median: 3531.5 (8%) max: 3577 Points
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Super Pi mod 1.5 XS 1M - Super Pi mod 1.5 XS 1M *
min: 13 avg: 13.1 median: 13 (3%) max: 13.26 s
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VIA C3-M C3-M-1200
Super Pi mod 1.5 XS 2M - Super Pi mod 1.5 XS 2M *
min: 29 avg: 29.4 median: 29 (1%) max: 30.11 s
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Super Pi Mod 1.5 XS 32M - Super Pi mod 1.5 XS 32M *
min: 728 avg: 734 median: 737 (3%) max: 738 s
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VIA C3-M C3-M-1200
SiSoft Sandra Dhrystone (MIPS) - SiSoft Sandra Dhrystone (MIPS)
54820 MIPS (26%)
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SiSoft Sandra Whetstone (MFLOPS) - SiSoft Sandra Whetstone (MFLOPS)
38190 MFLOPS (29%)
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Windows 7 Experience Index - Win7 CPU
7.2 Points (92%)
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max:
3DMark Vantage - 3DM Vant. Perf. CPU no Physx
min: 12224 avg: 14498 median: 12238 (11%) max: 19033 Points
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max:
3DMark 11 - 3DM11 Performance Physics
4686 Points (13%)
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max:
- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance
v1.26
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Reviews for the Intel Core i7-840QM processor
Review Dell XPS 17 Notebook Bigger, faster, better? After recently looking closer at the 15 inch alternative from Dell's newest multimedia offspring, the 17 inch, XPS 17 now has to prove i...
Intel Core i7-840QM | NVIDIA GeForce GT 445M | 17.30" | 3.6 kg
Review Dell XPS 15 FHD Notebook Ambitious Glossy-Screened Gamer. Finally, the XPS 15 has gotten a chance to go through our obstacle course. This configuration of a powerful quad-core CPU and...
Intel Core i7-840QM | NVIDIA GeForce GT 435M | 15.60" | 2.9 kg
HP EliteBook 8740w-WD943EA : NVIDIA Quadro FX 3800M, 17.00", 3.6 kg
External Review » HP EliteBook 8740w-WD943EA
Dell XPS 15 FHD : NVIDIA GeForce GT 435M, 15.60", 2.9 kg
External Review » Dell XPS 15 FHD
Dell XPS 17 : NVIDIA GeForce GT 445M, 17.30", 3.6 kg
External Review » Dell XPS 17
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Other CPUs of the series Core i7 Surrounding CPUs
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Klaus Hinum, 2010-05-19 (Update: 2012-05-26)