Quick Verdict
A capable ultrabook chip for 2013 that offered great battery life and improved graphics, but its dual-core design is severely outdated for modern workloads.
Overview
Launch
2013
Status
End-of-lifeGeneration
4th Gen
Market
Mobile
The Intel Core i7-4600U is an ultra-low voltage mobile processor launched in September 2013 as part of the 4th Generation Haswell lineup. Designed specifically for thin-and-light ultrabooks, this dual-core CPU features Hyper-Threading to handle 4 threads simultaneously. Operating at a base frequency of 2.1 GHz and boosting up to 3.3 GHz, it delivered strong single-threaded performance for its 15W thermal envelope. The processor is built on Intel's 22nm process and utilizes the BGA 1168 socket, meaning it is soldered directly to the motherboard. One of its standout features is the inclusion of Intel HD Graphics 5000, which offers significantly more execution units than standard HD 4600, providing better integrated graphics performance for light gaming and media workloads. With 4MB of L3 cache and support for DDR3 memory, the i7-4600U was a premium choice for business ultrabooks where battery life and compact dimensions were prioritized over raw multi-core horsepower.
The Core i7-4600U brought Haswell efficiency to thin-and-light laptops. With 2 cores, 4 threads, and a 3.3 GHz turbo, it balanced performance with battery life.
Its HD 5000 graphics were a step up from standard integrated solutions, making it ideal for business professionals on the move.
Specifications
Performance
Architecture
22nm
Process Node
Haswell-ULT
Codename
2C / 4T
Core Config
4 MB
L3 Cache
15 W
TDP
Architecture Overview
The Core i7-4600U is built on the Haswell-ULT microarchitecture, utilizing Intel's 22nm Tri-Gate process. The 'ULT' designation indicates it is a System on Chip (SoC) optimized for ultra-low power environments. A major architectural feature of Haswell is the fully integrated voltage regulator (FVR), which moved power management components from the motherboard onto the CPU die, saving space and improving power delivery efficiency. The CPU design includes 2 physical cores with Hyper-Threading and 4MB of L3 cache. The standout feature of this specific SKU is the Intel HD Graphics 5000 integrated GPU. Unlike the HD 4400 found in lower-tier U chips, the HD 5000 boasts 40 Execution Units (EUs), offering substantially better 3D performance and hardware video encoding capabilities. The processor supports dual-channel DDR3 memory natively at 1600 MT/s and communicates with the chipset via the OPI (On Platform Interface) link rather than traditional DMI.
CPU Design
2 cores, 4 threads, locked multiplier, integrated voltage regulator.
Memory Subsystem
Dual-channel DDR3-1600.
PCIe & I/O
16 PCIe 2.0 lanes.
Overclocking
Locked; no overclocking capabilities.
- Improved idle power consumption
- Better integrated graphics (HD 5000)
- AVX2 instruction support
Key Highlights
- Excellent power efficiency for 2013
- HD 5000 graphics offer decent legacy media playback
- Good single-core burst performance
- Enabled thinner laptop designs
- Only 2 physical cores
- Soldered to motherboard (BGA)
- Lacks official Windows 11 support
- DDR3 memory is obsolete
History
Launched in late 2013, the Intel Core i7-4600U arrived during a critical transition for the mobile PC market. Manufacturers were desperately trying to counter the rising threat of tablets and smartphones by promoting 'Ultrabooks'—extremely thin and light laptops with all-day battery life. The 4600U was engineered specifically for this segment.
By utilizing the Haswell-ULT die, Intel managed to drastically reduce idle power consumption, allowing laptops to achieve 8 to 10 hours of battery life on a single charge. Unlike standard dual-core chips, the 4600U featured Intel HD Graphics 5000, boasting 40 execution units instead of the usual 20, providing a noticeable bump in gaming and media playback capabilities without needing a discrete GPU. It powered many premium ultrabooks of the era, such as the ThinkPad X1 Carbon and various Dell XPS models.
While it has been long surpassed by modern architectures, it represented a pivotal moment where ultrabooks finally delivered adequate performance without sacrificing portability.
Improvements over Previous Generation
- Improved idle power consumption
- Better integrated graphics (HD 5000)
- AVX2 instruction support
Alternatives & Competitors
Should You Buy It?
Not Recommended for the right buyer
Purchasing a cheap used laptop for basic Linux computing
Avoid if…
- You need to run modern Windows 11 smoothly
- You want to do any modern gaming
- You need high multi-threaded performance
Use Cases
Interesting Facts
The 'U' suffix stands for Ultra-low power, targeting 15W TDP.
It uses the Haswell-ULT die, which is physically smaller than standard Haswell mobile dies.
The HD 5000 graphics were a significant leap over Intel's previous HD 4000.
It was commonly found in premium business ultrabooks like the ThinkPad X240.
The integrated voltage regulator helped laptops achieve longer sleep times.
It supports Intel Wireless Display (WiDi) technology.
Max graphics dynamic frequency is 1100 MHz.
Despite being a mobile chip, it supports AES-NI for hardware encryption.
It has a die size of just 118 mm².
The processor introduced support for AVX2 instructions.
People Also Ask
Is the i7-4600U good for gaming?
It can handle very old or light indie games thanks to the HD 5000 graphics, but it is not suitable for modern gaming.
Can the i7-4600U be overclocked?
No, it has a locked multiplier and is designed for stability and battery life.
Does the i7-4600U support Windows 11?
Officially, no. It is not on Microsoft's supported CPU list for Windows 11.
What is the TDP of the i7-4600U?
It has a Thermal Design Power (TDP) of 15 Watts.
Does the i7-4600U have integrated graphics?
Yes, it includes Intel HD Graphics 5000.
Can I upgrade the i7-4600U in my laptop?
No, it is soldered to the motherboard using the BGA 1168 socket.
What is the max turbo frequency of the i7-4600U?
The maximum turbo boost is 3.3 GHz.
Does it support Hyper-Threading?
Yes, it has 2 cores and 4 threads.
What memory does it support?
It supports dual-channel DDR3-1600 memory.
Does it support AES-NI?
Yes, it includes AES-NI instructions for hardware acceleration of encryption.
Frequently Asked Questions
What is the base clock of the i7-4600U?
The base clock is 2.1 GHz.
Does it support PCIe 3.0?
No, the Haswell-ULT platform officially supports PCIe 2.0.
What is the L3 cache size?
It has 4 MB of L3 cache.
What generation is the i7-4600U?
It is a 4th Generation Intel Core processor (Haswell).
Is the i7-4600U unlocked?
No, the multiplier is locked.
What laptops use the i7-4600U?
It was popular in 2013-2014 business ultrabooks like the Lenovo ThinkPad X240 and Dell Latitude 7440.
What socket does it use?
It uses the Intel BGA 1168 socket.
Is it good for video editing?
It can handle basic 1080p editing, but it will be very slow compared to modern processors.
Does it support VT-d?
Yes, it supports Intel Virtualization Technology for Directed I/O.
What is the max memory bandwidth?
The max memory bandwidth is 25.6 GB/s.