Intel Core i7-3840QM

The Intel Core i7-3840QM is a fast quad-core processor for laptops based on the Ivy Bridge architecture and successor of the i7-3820QM. Due to Hyperthreading, the four cores can handle up to eight threads in parallel leading to better utilization of the CPU. Each core offers a base speed of 2.8 GHz but can dynamically increase clock rates with Turbo Boost up to 3.6 GHz (for 4 active cores), 3.7 GHz (for 2 active cores) and 3.8 GHz (for 1 active core). Furthermore, the CPU offers 8 MB Last Level 3 Cache.

Ivy Bridge is an enhanced die shrink of the Sandy Bridge architecture with improvements on both GPU and CPU performance. The CPUs are produced in 22nm (versus 32nm Sandy Bridge CPUs) and are the first to introduce 3D transistors for increased energy efficiency when compared to similarly clocked Sandy Bridge processors. Other new features are integrated PCI Express 3.0 and DDR3(L)-1600 support.

The performance of the Core i7-3840QM should be slightly above a similarly clocked Sandy Bridge processor due to slight architectural improvements. Overall, performance should be similar to the Core i7-3920XM.

The integrated Intel HD Graphics 4000 offers 16 Execution Units (EUs) clocked at 650 MHz up to 1300 MHz with Turbo Boost, making it one of the faster variants.

As with most quad-core Ivy Bridge models, the Core i7-3840QM is specified at a TDP of 45 Watts including graphics card and memory controller. Therefore, the CPU is well-suited for laptops 15-inches or greater.

Series	Intel Core i7
Codename	Ivy Bridge
Clock Rate	2800 - 3800 MHz
Level 1 Cache	256 KB
Level 2 Cache	1024 KB
Level 3 Cache	8192 KB
Number of Cores / Threads	4 / 8
Max. Power Consumption (TDP = Thermal Design Power)	45 Watt
Transistor Count	1400 Million
Manufacturing Technology	22 nm
Die Size	160 mm2
Max. Temperature	105 °C
Features	HD Graphics 4000, DDR3(L)-1600 Memory Controller, HyperThreading, AVX, Quick Sync, Virtualization
64 Bit	64 Bit support
Hardware Virtualization	VT-x, VT-d
Starting Price	$568 U.S.
Announcement Date	09/30/2012

CPU Benchmarks

3DMark 06 - CPU:

100%

min: 6946 avg: 6998 (82.26%) max: 7050 Points

Model	Memory	GPU			Result
M73-2N, Ivy Bridge	8192 MB	HD Graphics 4000			6946
Nomad 15	16384 MB	GeForce GTX 680M	757 / 1800MHz	4096MB 306.97	7050

Cinebench R10 in comparison
Intel Atom Z670 (min)	691
...
Intel Core i7 (Desktop) 2700K	19675
Intel Core i7 3740QM	19798
Intel Xeon (Desktop) X5670	19954
Intel Core i7 3840QM	20135
Core i7 4900MQ	20529
Intel Core i7 3940XM	20582
Core i7 4930MX	20818
...
Intel Core i7 (Desktop) 3960X (max)	27189.5

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Intel Core i7-3840QM

CPU Benchmarks

Reviews for the Intel Core i7 3840QM processor

Other CPUs of the series Intel Core i7

Surrounding CPUs