The Intel Core i7-4940MX was a mobile processor with 4 cores, launched in January 2014, at an MSRP of $1096. It is part of the Core i7 Extreme lineup, using the Haswell architecture with Socket G3. Thanks to Intel Hyper-Threading the core-count is effectively doubled, to 8 threads. Core i7-4940MX has 8 MB of L3 cache and operates at 3.1 GHz by default, but can boost up to 4 GHz, depending on the workload. Intel is making the Core i7-4940MX on a 22 nm production node using 1,400 million transistors. You may freely adjust the unlocked multiplier on Core i7-4940MX, which simplifies overclocking greatly, as you can easily dial in any overclocking frequency. With a TDP of 57 W, the Core i7-4940MX consumes typical power levels for a modern PC. Intel's processor supports DDR3 memory with a dual-channel interface. The highest officially supported memory speed is 1600 MT/s, but with overclocking (and the right memory modules) you can go even higher. For communication with other components in the system, Core i7-4940MX uses a PCI-Express Gen 3 connection. This processor features the Intel HD 4600 integrated graphics solution. Hardware virtualization is available on the Core i7-4940MX, which greatly improves virtual machine performance. Programs using Advanced Vector Extensions (AVX) can run on this processor, boosting performance for calculation-heavy applications. Besides AVX, Intel is including the newer AVX2 standard, too, but not AVX-512.
This processor comes with an unlocked BCLK multiplier, allowing users to set the multiplier value higher than shipped value, to facilitate better overclocking.