Quick Verdict
An important step forward for mobile integrated graphics, offering unique overclocking potential, but now obsolete.
Overview
Launch
2013
Status
End-of-lifeGeneration
4th Gen Core i7 (Crystal Well)
Market
Mobile
The Intel Core i7-4950HQ is a mobile processor launched in June 2013, representing the vanguard of the fourth-generation Core i7 Crystal Well family. Manufactured using a 22-nanometer process, this chip was engineered for high-end laptops and portable workstations where a balance of computational power and graphical fidelity is essential. It integrates four cores and eight threads, leveraging Hyper-Threading to excel in parallel processing tasks. A defining feature is its Intel Iris Pro HD 5200 integrated graphics, which includes an embedded DRAM cache to alleviate memory bottlenecks. Operating at a base frequency of 2.4 GHz and boosting up to 3.6 GHz, the processor delivers robust single-threaded and multi-threaded performance. With a 47-watt thermal design power, it was a staple in premium mobile computing platforms. This model notably featured an unlocked base clock multiplier, a rarity for mobile chips, providing enthusiasts with limited overclocking headroom for enhanced performance in thermal-constrained environments.
The Core i7-4950HQ brought Iris Pro graphics and an unlocked base clock to premium mobile platforms, offering strong performance for 2013.
Specifications
Performance
Handles everyday tasks well, but slow by modern standards.
Adequate for basic VM usage.
Competent for 2013 games, but struggles with modern titles.
High TDP and 22nm process result in poor battery life.
- •Iris Pro eDRAM helps textures
- •Unlocked multiplier allows slight performance tuning
- •Not for modern AAA gaming
- •Lacks modern AI acceleration
- •Slow compute times
Architecture
22nm
Process Node
Crystalwell
Codename
4C / 8T
Core Config
6 MB
L3 Cache
47 W
TDP
Architecture Overview
The architecture of the Core i7-4950HQ is based on the Crystalwell silicon, a specialized variant of Intel's Haswell microarchitecture. Its most significant architectural innovation is the integration of 128 megabytes of embedded DRAM (eDRAM) on the processor package. This eDRAM functions as an L4 cache, providing massive bandwidth to the integrated Intel Iris Pro HD 5200 graphics and substantially accelerating compute workloads. The die measures 264 square millimeters and houses 1.4 billion transistors. It supports dual-channel DDR3 memory at 1600 MT/s, yielding 25.6 GB/s of peak bandwidth. The processor provides 16 PCI Express 3.0 lanes, enabling direct connection to discrete GPUs or high-speed storage. Furthermore, it supports advanced instruction sets including AVX2 and FMA3, which optimize vector operations. The inclusion of an unlocked BCLK multiplier on this specific mobile part allowed for tweaked base clock frequencies, an unusual feature that catered to extreme mobile enthusiasts and specialized system builders.
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
Unlocked BCLK multiplier.
- Added eDRAM
- Better integrated graphics
- Unlocked BCLK
Key Highlights
- Unlocked multiplier (rare for mobile)
- Iris Pro 5200 with eDRAM
- Solid multi-threaded performance for its era
- Very poor efficiency by modern standards
- End-of-life
- Soldered to motherboard
History
Launched in June 2013, the Core i7-4950HQ marked an important transition in Intel's mobile processor strategy. It was among the first mainstream mobile chips to feature the Iris Pro brand, aiming to eliminate the need for entry-level discrete graphics in premium laptops. The processor found its way into several high-end mobile workstations and gaming laptops, as well as Apple's MacBook Pro Retina models, where its potent integrated graphics were highly valued for video editing and gaming.
The unlocked multiplier aspect made it a curiosity in the mobile space, though practical overclocking was severely limited by laptop thermal solutions. As the Haswell architecture gave way to Broadwell and Skylake, the i7-4950HQ was eventually phased out and classified as end-of-life. Today, it stands as a pioneering chip that proved the viability of integrating high-speed eDRAM directly into consumer mobile processors, setting a precedent for future integrated graphics advancements.
Improvements over Previous Generation
- Added eDRAM
- Better integrated graphics
- Unlocked BCLK
Alternatives & Competitors
Should You Buy It?
Not Recommended for the right buyer
Purchasing a used laptop at a rock-bottom price. Buying advice for the Core i7-4950HQ today suggests avoiding significant investment. While it was a formidable processor in its prime, modern applications and operating systems demand greater efficiency and newer instruction sets. If you encounter a used laptop featuring this chip at a very low price, it can still serve adequately for web browsing, office tasks, and media playback. However, its 47-watt TDP and older 22nm process mean it will run warmer and consume more power than modern equivalents. For gaming or content creation, its integrated graphics, while historically significant, no longer meet modern baseline requirements. Save your budget for a newer system that offers better longevity.
Avoid if…
- Buying new
- Needing long battery life
- Doing modern video editing
Use Cases
Interesting Facts
One of the very few mobile Intel CPUs to feature an unlocked multiplier.
Introduced the Iris Pro branding to the mobile market.
Contains 1.4 billion transistors on a large 264mm² die.
Integrated 128MB of eDRAM, a precursor to modern cache designs.
Featured Intel TSX-NI instructions.
Powered early 2013 MacBook Pro Retina models.
Has a TDP of 47W, typical for high-performance mobile chips of its era.
Supported PCIe 3.0 natively.
Could turbo boost up to 3.6 GHz on a single core.
Built on Intel's 22nm tri-gate process.
People Also Ask
Is the Intel Core i7-4950HQ unlocked?
Yes, it features an unlocked BCLK multiplier, which is very rare for a mobile processor.
Does the i7-4950HQ have Iris Pro graphics?
Yes, it includes Intel Iris Pro HD 5200 graphics with 128MB of eDRAM.
What is the base clock of the i7-4950HQ?
The base clock is 2.4 GHz.
Can the i7-4950HQ run Windows 11?
No, it is not on the supported CPU list for Windows 11.
How much cache does the i7-4950HQ have?
It has 6MB of L3 cache and 128MB of L4 eDRAM.
What socket does the i7-4950HQ use?
It uses the Intel BGA 1364 socket.
Is the i7-4950HQ good for gaming?
It was decent for 2013 gaming, but modern games require a much more powerful CPU and GPU.
What is the TDP of the i7-4950HQ?
It has a 47-watt TDP.
Does the i7-4950HQ support DDR4?
No, it only supports DDR3 memory.
When was the Core i7-4950HQ released?
It was released in June 2013.
Frequently Asked Questions
Can I overclock the i7-4950HQ?
Yes, the base clock multiplier is unlocked, allowing for minor overclocking.
What is the max turbo frequency?
The maximum turbo frequency is 3.6 GHz.
How many cores does the i7-4950HQ have?
It has 4 physical cores and 8 threads.
What generation is the i7-4950HQ?
It is a 4th Generation Intel Core processor.
Does the i7-4950HQ support virtualization?
Yes, it supports VT-x for hardware virtualization.
Is the i7-4950HQ still supported by Intel?
No, it is classified as end-of-life.
What is the thermal design power of the i7-4950HQ?
The TDP is 47 Watts.
What kind of memory does the i7-4950HQ support?
It supports dual-channel DDR3 memory at 1600 MT/s.
Does the i7-4950HQ have an integrated GPU?
Yes, it has the Intel HD 5200 (Iris Pro) integrated graphics.
Can I upgrade the i7-4950HQ?
No, it is soldered to the motherboard using a BGA socket.