Fourth-Generation Core i7 Desktop Models
In the table below, we listed all fourth-generation Core i7 desktop processors, which are based on the Haswell microarchitecture. The models released so far are based on socket LGA1150 and, therefore, incompatible with motherboards designed for previous models.
These processors have a dual-channel memory controller supporting 1,333 MHz and 1,600 MHz DDR3 memories. They have an integrated PCI Express 3.0 controller supporting one x16 connection, two x8 connections, one x8 connection or two x4 connections. Communication with the motherboard chipset is achieved through a DMI bus (2 GB/s each direction, listed as 5 GT/s by Intel).
A new feature brought by these models is the support for AVX2 instructions.
All models have an integrated DirectX 11.1 video controller and two graphics engines are available at the moment: HD 4600 (codenamed “GT2”, 20 processing units), and Iris Pro 5200 (codenamed “GT3e”, 40 processing units, and video memory integrated into the CPU).
The fourth-generation Core i7 desktop models are quad-core CPUs using the Hyper-Threading technology. This means that the operating system will recognize all these CPUs as having eight cores. However, only half the cores are “real;” the other half is simulated.
|sSpec||Model||Clock||Turbo Boost||Cores||HT||Video||Video Clock||Video Boost||L3 Cache||Tech.||TDP (W)||Max. Temp. (°C)*||Socket|
|SR1BW||4771||3.5 GHz||3.9 GHz||4||Yes||HD 4600||350 MHz||1.2 GHz||8 MiB||22 nm||84||72||LGA1150|
|SR147||4770K||3.4 GHz||3.9 GHz||4||Yes||HD 4600||350 MHz||1.25 GHz||8 MiB||22 nm||84||72.72||LGA1150|
|SR149||4770||3.4 GHz||3.9 GHz||4||Yes||HD 4600||350 MHz||1.2 GHz||8 MiB||22 nm||84||72.72||LGA1150|
|NA||4770R||3.2 GHz||3.9 GHz||4||Yes||Iris Pro 5200||200 MHz||1.3 GHz||6 MiB||22 nm||65||66.45||LGA1150|
|SR14H||4770S||3.1 GHz||3.9 GHz||4||Yes||HD 4600||350 MHz||1.2 GHz||8 MiB||22 nm||65||71.35||LGA1150|
|SR14N||4770T||2.5 GHz||3.7 GHz||4||Yes||HD 4600||350 MHz||1.2 GHz||8 MiB||22 nm||45||71.45||LGA1150|
|SR14Q||4765T||2.0 GHz||3.0 GHz||4||Yes||HD 4600||350 MHz||1.2 GHz||8 MiB||22 nm||35||66.35||LGA1150|
TDP stands for Thermal Design Power and indicates the CPU maximum thermal dissipation, i.e., the CPU cooler must be able to dissipate at least this amount of heat.
* The temperatures listed above are Tcase, which is the maximum external temperature of the CPU. On some other models, the manufacturer lists Tjunction, which is the maximum internal temperature of the CPU. The two are not comparable.