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 |
| Clock Rate | 1860 - 3200 MHz |
| Front Side Bus | 2500 MHz |
| Level 1 Cache | 256 KB |
| Level 2 Cache | 1024 KB |
| Level 3 Cache | 8196 KB |
| Number of Cores / Threads | 4 / 8 |
| Max. 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 |
| Hardware Virtualization | VT-x, VT-d |
| Starting Price | $568 U.S. |
| Announcement Date | 06/01/2010 |
| Product Link (external) | Intel Core i7 840QM |
CPU Benchmarks
100%
4 benchmarks and specifications
4 benchmarks and specifications 100% 100% 100% 100% 100% 100% 100% 100% 100%
100% 100% 100% 100% 100% 100% - 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
