Specifications of mobile Haswell CPUs

Last Friday VR-Zone published details of future "Haswell" desktop microprocessors, coming in the Q2 2013. One interesting observation about them is that individual models in Haswell and Ivy Bridge lineups have identical features, such as clock speed, sizes of caches and support for advanced technologies, and differ only by the type of integrated graphics, and by higher TDP on some Haswell SKUs. VR-Zone now posted details of mobile "Haswell" quad-core microprocessors, dubbed as Core i7-4800MQ, i7-4900MQ and i7-4930MX. Like desktop parts, three mobile Core i7s have basic CPU features, exactly matching those of Core i7-3740QM, i7-3840QM and i7-3940XM Ivy Bridge chips. As a result, all performance improvements in future Haswell parts over current Ivy Bridge models will be only due to better microarchitecture and GPU in Haswell products.

First Haswell mobile processors will have 4 CPU cores with Hyper-Threading support, 8 MB L3 cache on the i7-4900 series, and 6 MB cache on the i7-4800 series. The i7 processors will be clocked from 2.7 GHz to 3 GHz, reaching as high as 3.7 - 3.9 GHz when Turbo Boost feature is active. The i7-4930MX is supposed to be unlocked, and could be overclocked to achieve higher performance. All processors will support vPro technology, VT-d (I/O virtualization) and Trusted Execution. The CPUs will integrate HD 4600 graphics with 400 MHz base frequency. The graphics unit will have Turbo technology enabled, that will increase GPU frequency up to 1.35 GHz on the unlocked i7-4930MX, and up to 1.3 GHz on the i7-4800MQ and i7-4900MQ parts. The unlocked core i7 will have 57 Watt TDP, and the "MQ" CPUs will have 47 Watt TDP, that is 2 Watts higher than TDP of Ivy Bridge microprocessors. The Core i7s will be packaged in 946-pin package, that will require socket G3, and they will not be compatible with current generation of socket G2 motherboards.

As was mentioned above, Haswell processors will have higher TDP than the current generation of mobile CPUs. That doesn't mean that Haswell will have higher power requirements than Ivy Bridge. For once, Haswell processors integrate voltage regulator (VR) on a chip, which increases their TDP. This also enables them to use single on-board VR for CPU/GPU, rather than 5 different VRs. Intel claims that their integrated VR is more efficient than on-board VRs, which leads to lower overall system power consumption. Additionally, Intel reduced TDP of a Lynx Point chipset by about 25%, which lowers system TDP even further.

Mobile Haswell CPUs will be available in April 2013. Later in the year Intel plans to launch "M" mobile series of dual-core processors. Also, in the third quarter Intel will release Haswell "H" series of quad-core BGA parts with GT3 graphics, and Haswell "U" series chips.

Specifications of Haswell mobile quad-core CPUs are provided below (Haswell SKUs are in bold):

ModelCores /
Stock / Turbo
Core i7-3740QM 4 / 8 2.7 / 3.7 GHz 6 MB HD 4000 650 / 1300 MHz 45 Watt
Core i7-4800MQ 4 / 8 2.7 / 3.7 GHz 6 MB HD 4600 400 / 1300 MHz 47 Watt
Core i7-3840QM 4 / 8 2.8 / 3.8 GHz 8 MB HD 4000 650 / 1300 MHz 45 Watt
Core i7-4900MQ 4 / 8 2.8 / 3.8 GHz 8 MB HD 4600 400 / 1300 MHz 47 Watt
Core i7-3940XM 4 / 8 3 / 3.9 GHz 8 MB HD 4000 650 / 1350 MHz 55 Watt
Core i7-4930MX 4 / 8 3 / 3.9 GHz 8 MB HD 4600 400 / 1350 MHz 57 Watt

Source: VR-Zone

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There are 3 comments posted


2012-12-18 00:07:08
Posted by: Casey

I just want to see the 20x less power usage. If that is true, then that would be a game changer for laptops.

power saving

2012-12-18 00:29:13
Posted by: unityole

its more of a powersaving when idle and browsing. these high end mobile CPU especially 4930xm when overclocked will chew through battery power. imo power saving features is pointless, unless for server or ultrabook/tablets.

just give us an extreme CPU that cools better than ivybridge, overclock better and higher than previous 3940xm, and i'll be happy.


2012-12-25 20:36:59
Posted by: Nexing

Well, we still need to see what other mobile CPUs will Haswell bring...
So far -nearly at 2013-, it is disappointing that not a single quad core CPU can be run with 35w or less.

I was expecting to have a 2013 powerful quad with over 3.0 GHz (in a single core) working on a 35w power base, together with an able touch screen, and all running at over 12 hours of battery capacity*/1...
This announcement delays my expectations to some farther future.

As a customer I and certainly laptop manufacturers (again), are not happy with this Intel press release.

/1 Ion Lithium batteries are better not discharged below 30%, so if we expect to have an ALL-DAY working laptop we do need over 12 hours of speced battery capacity.

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