Quick Verdict
An innovative mobile processor for its time, offering strong integrated graphics, though outclassed by modern efficiency standards.
Overview
Launch
2014
Status
End-of-lifeGeneration
4th Gen Core i7 (Crystal Well)
Market
Mobile
The Intel Core i7-4870HQ is a high-performance mobile processor introduced in mid-2014 as part of the fourth-generation Core i7 family, specifically utilizing the Crystalwell architecture. Built on Intel's 22-nanometer manufacturing process, this chip was designed to power premium laptops and all-in-one systems requiring substantial graphical and computational capabilities. It features four physical cores and supports eight simultaneous threads via Intel's Hyper-Threading technology, making it adept at handling demanding multitasking environments. One of its standout features is the inclusion of the Intel Iris Pro HD 5200 integrated graphics, which incorporates embedded DRAM (eDRAM) to significantly boost graphical performance and compute tasks. With a base clock speed of 2.5 GHz and a maximum turbo frequency of 3.7 GHz, it balances raw speed with power efficiency, operating within a 47-watt thermal design power envelope. This processor remains a notable example of Intel's early efforts to bridge the gap between CPU and GPU performance in the mobile sector.
The Core i7-4870HQ combined Intel's Haswell architecture with Crystalwell eDRAM to deliver exceptional mobile integrated graphics performance, targeting high-end laptops.
Specifications
Performance
Adequate for standard office tasks and light content creation.
Can handle basic VMs but limited by 47W TDP and older architecture.
Handles older or less demanding games well, but struggles with modern titles.
22nm process is inefficient compared to modern mobile chips.
- •Good for retro gaming
- •Iris Pro eDRAM helps frame rates
- •Not suitable for modern AAA games
- •No dedicated AI hardware
- •Slow inference times
Architecture
22nm
Process Node
Crystalwell
Codename
4C / 8T
Core Config
6 MB
L3 Cache
47 W
TDP
Architecture Overview
Architecture Explained for the Core i7-4870HQ centers around the Crystalwell die, an evolution of the Haswell microarchitecture. The most defining characteristic of Crystalwell is the integration of 128 megabytes of embedded DRAM (eDRAM) directly onto the processor package. This eDRAM acts as a high-speed Level 4 cache, dramatically increasing memory bandwidth available to both the CPU cores and the integrated Intel Iris Pro HD 5200 graphics. The processor itself is fabricated using a 22-nanometer tri-gate process, housing 1.4 billion transistors across a 264 square millimeter die. It supports dual-channel DDR3 memory natively at 1600 MT/s, providing up to 25.6 GB/s of bandwidth, which is further supplemented by the eDRAM. The chip utilizes 16 PCIe 3.0 lanes for external expansion and incorporates advanced instruction sets like AVX2 and FMA3, accelerating floating-point calculations and improving performance in vector-intensive workloads such as media processing and gaming.
CPU Design
4 physical cores, 8 threads via Hyper-Threading.
Memory Subsystem
Dual-channel DDR3-1600 with 128MB eDRAM L4 cache.
PCIe & I/O
16 PCIe 3.0 lanes.
Overclocking
Locked multiplier.
- Higher clocks
- Refined eDRAM implementation
Key Highlights
- Strong integrated graphics for its era
- Good multi-threaded performance
- Includes eDRAM cache
- End-of-life platform
- High TDP for mobile
- Poor efficiency by modern standards
History
The history of the Core i7-4870HQ is tied to Intel's strategy in the early 2010s to improve mobile gaming and workstation performance without relying solely on discrete GPUs. Released on July 1st, 2014, it arrived as a mid-cycle refresh for the Haswell platform, aiming to provide system builders with a slightly higher clocked alternative to earlier Crystalwell models like the i7-4950HQ. During its tenure, it was highly regarded for powering premium 15-inch and 17-inch gaming laptops and Apple's MacBook Pro lineup, where space constraints made discrete graphics less desirable.
The inclusion of Iris Pro graphics allowed these systems to handle moderate gaming and professional applications like Final Cut Pro with impressive fluidity. As Intel transitioned to the 14nm Broadwell and Skylake architectures, the i7-4870HQ was eventually phased out and declared end-of-life. However, its legacy lives on as a pioneering step toward integrating high-bandwidth memory directly onto consumer processors, a concept that continues to influence modern chip design.
Improvements over Previous Generation
- Higher clocks
- Refined eDRAM implementation
Alternatives & Competitors
Should You Buy It?
Not Recommended for the right buyer
Buying a used laptop for basic computing or retro gaming at a heavily discounted price. Buying Advice for the Core i7-4870HQ in the modern context is straightforward: it is no longer viable for new builds, and purchasing a used laptop with this processor requires careful consideration. While it still offers respectable performance for basic productivity, web browsing, and media consumption, its age means it lacks support for modern instruction sets and efficiency improvements found in current-generation chips. If you are buying a used laptop heavily discounted, ensure the battery is healthy, as older systems degrade over time. For any serious gaming or content creation, a newer processor—even a budget modern one—will vastly outperform this aging chip. Avoid spending significant money on this platform today.
Avoid if…
- Building a new system
- Needing modern gaming performance
- Prioritizing battery life
Use Cases
Interesting Facts
One of the first consumer CPUs to feature on-package eDRAM.
Powered several premium Apple MacBook Pro models.
The Iris Pro 5200 was a massive leap over standard Intel HD graphics.
Built on the robust 22nm Haswell architecture.
Soldered directly to the motherboard via BGA 1364.
Featured 1.4 billion transistors.
Supported Intel's TSX-NI instruction set.
Included VT-x for hardware virtualization.
Aimed to eliminate the need for entry-level discrete GPUs.
Part of Intel's rarely used 'Crystal Well' codename tier.
People Also Ask
Is the Core i7-4870HQ still good for gaming?
Only for older or very light games. It lacks the power for modern AAA titles.
What is the TDP of the i7-4870HQ?
It has a 47-watt thermal design power.
Does the i7-4870HQ have eDRAM?
Yes, it includes 128MB of embedded DRAM for the Iris Pro graphics.
Can you overclock the i7-4870HQ?
No, the multiplier is locked.
What socket does the i7-4870HQ use?
It uses the Intel BGA 1364 socket, meaning it is soldered to the motherboard.
What generation is the Core i7-4870HQ?
It is a 4th Generation Intel Core processor.
Does the i7-4870HQ support DDR4 memory?
No, it supports dual-channel DDR3 memory up to 1600 MT/s.
What is the turbo boost speed of the i7-4870HQ?
The maximum turbo boost frequency is 3.7 GHz.
Is the i7-4870HQ good for video editing?
It can handle basic 1080p video editing, but modern CPUs are significantly faster.
What graphics card is equivalent to the i7-4870HQ's Iris Pro?
Its Iris Pro 5200 graphics were roughly equivalent to a low-end mobile GT 740M.
Frequently Asked Questions
What graphics are integrated into the i7-4870HQ?
It features Intel Iris Pro HD 5200 graphics.
When was the i7-4870HQ released?
It was released on July 1st, 2014.
What is the max turbo frequency of the i7-4870HQ?
The max turbo frequency is 3.7 GHz.
How much L3 cache does the i7-4870HQ have?
It has 6 MB of shared L3 cache.
Can I upgrade the i7-4870HQ in my laptop?
No, it uses a BGA socket and is soldered to the motherboard.
Does the i7-4870HQ support hyper-threading?
Yes, it has 4 cores and 8 threads.
What is the base clock of the i7-4870HQ?
The base clock is 2.5 GHz.
Is the i7-4870HQ good for streaming?
It can handle light streaming, but modern CPUs offer better encoding hardware.
Does the i7-4870HQ support Windows 11?
No, it lacks the necessary hardware requirements for Windows 11.
What is the process node of the i7-4870HQ?
It is manufactured on a 22nm process.