Intel i7 4790K LGA 1150 Processor

SKU: i7-4790k

Intel i7 4790K is a Haswell-Refresh LGA 1150-based 4GHZ base-clock CPU


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Status Launched
Launch Date Q2’14
Processor Number i7-4790K
Intel® Smart Cache 8 MB
DMI2 5 GT/s
# of QPI Links 0
Instruction Set 64-bit
Instruction Set Extensions SSE4.1/4.2, AVX 2.0
Embedded Options Available No
Lithography 22 nm
Scalability 1S Only
Thermal Solution Specification PCG 2013D
Recommended Customer Price BOX : $350.00
TRAY: $339.00
Datasheet Link
# of Cores 4
# of Threads 8
Processor Base Frequency 4 GHz
Max Turbo Frequency 4.4 GHz
TDP 88 W
Memory Specifications
Max Memory Size (dependent on memory type) 32 GB
Memory Types DDR3-1333/1600
Max # of Memory Channels 2
Max Memory Bandwidth 25.6 GB/s
ECC Memory Supported No
Graphics Specifications
Processor Graphics Intel® HD Graphics 4600
Graphics Base Frequency 350 MHz
Graphics Max Dynamic Frequency 1.25 GHz
Graphics Video Max Memory 1.7 GB
Intel® Quick Sync Video Yes
Intel® InTru™ 3D Technology Yes
Intel® Insider™ Yes
Intel® Wireless Display Yes
Intel® Flexible Display Interface (Intel® FDI) Yes
Intel® Clear Video HD Technology Yes
# of Displays Supported 3
Expansion Options
PCI Express Revision 3
PCI Express
Up to 1×16, 2×8, 1×8/2×4
Max # of PCI Express Lanes 16
Package Specifications
Max CPU Configuration 1
TCASE 74.04°C
Package Size 37.5mm x 37.5mm
Graphics and IMC Lithography 22nm
Sockets Supported FCLGA1150
Low Halogen Options Available See MDDS
Advanced Technologies
Intel® Turbo Boost Technology 2
Intel® vPro Technology No
Intel Hyper-Threading Technology Yes
Intel Virtualization Technology (VT-x) Yes
Intel Virtualization Technology for Directed I/O (VT-d) Yes
Intel® VT-x with Extended Page Tables (EPT) Yes
Intel® TSX-NI Yes
Intel® 64 Yes
Intel® My WiFi Technology Yes
Idle States Yes
Enhanced Intel SpeedStep® Technology Yes
Thermal Monitoring Technologies Yes
Intel® Identity Protection Technology Yes
Intel® Stable Image Platform Program (SIPP) No
Intel Data Protection Technology
AES New Instructions Yes
Secure Key Yes
Intel® Platform Protection Technology
OS Guard Yes
Trusted Execution Technology No
Disable Bit
Anti-Theft Technology Yes
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From Hardware BBQ

From Hardware BBQ

Like many updated processors with the same architecture, there’s no reason for existing i7 4770K users to swap for i7 4790K. I am not saying that its a bad thing just because the conclusion is sober. Its just that its nothing more than what Intel has advertised it- as a Haswell Refresh. No reduced die or significant changes on the architecture. Judging by the MSRP, it’s the same pricing as i7 4770K.

From Anandtech

End-users with CPU intensive workloads always feel justified in requesting for more performance. The only question is if that performance is required at the expense of power, and if the CPU company feel satisfied they can offer a higher performance component with absolute stability. Over the past three generations, Intel CPUs at equal frequency have offered a 5-10% performance boost over the previous generation, usually around the same power envelope. Because 2014 would seem to be a year where there is no major generation change for the mainstream market segment, in order to provide that 10% boost, they have had to go directly at clock speeds.

From Techpowerup!

Upgrading from the Intel Core i7-4770K to the Intel Core i7-4790K is like going from a Honda to a Subaru, even if the Subaru is a newer model. There is no obvious added benefit. Anyone buying to put together their first PC, however, should just buy the Intel Core i7-4790K as its thermal interface material is improved and CPU cache operations are marginally faster.

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