Quick Verdict
A solid mobile quad-core CPU that powered premium laptops. Still capable for basic tasks, but its soldered design limits upgrades.
Overview
Launch
2012
Status
End-of-lifeGeneration
3rd Gen
Market
Mobile
The Intel Core i7-3615QM is a high-performance mobile processor launched in April 2012. Based on the Ivy Bridge architecture, this 22nm quad-core CPU features Hyper-Threading, allowing it to process 8 threads simultaneously. It operates at a base frequency of 2.3 GHz and boosts up to 3.3 GHz, providing excellent multi-threaded performance for gaming and content creation. With a 45W TDP, it is designed for thicker, performance-oriented laptop chassis with robust cooling. The key differentiator of this SKU is its exclusive use of the BGA 1224 socket, meaning it is soldered directly to the motherboard and cannot be upgraded. It includes 6MB of L3 cache and supports dual-channel DDR3-1600 memory. The integrated Intel HD Graphics 4000 handles basic display outputs and media decoding. The i7-3615QM was a popular choice for Apple's 2012 MacBook Pro lineup and other premium laptops where space-saving and durability were prioritized over modularity.
The Core i7-3615QM is a BGA-only variant of the 3610QM, pushing 4 cores, 8 threads, and a 3.3 GHz turbo. It was heavily used in the 2012 MacBook Pro Retina.
Its soldered nature means it cannot be upgraded, but it provided excellent multi-threaded performance for its era.
Specifications
Performance
Architecture
22nm
Process Node
Ivy Bridge
Codename
4C / 8T
Core Config
6 MB
L3 Cache
45 W
TDP
Architecture Overview
The Core i7-3615QM is built on the Ivy Bridge microarchitecture, utilizing Intel's 22nm Tri-Gate process. As a BGA-only variant, it shares the exact same die and architecture as the i7-3610QM but is permanently soldered to the motherboard using the FC-BGA1224 package. The architecture features 4 physical cores with Hyper-Threading, yielding 8 concurrent threads, and 6MB of shared L3 cache. It supports 16 lanes of PCIe 3.0 natively, a major upgrade over the PCIe 2.0 limit of previous generations. The integrated memory controller supports dual-channel DDR3-1600. The processor integrates Intel HD Graphics 4000 with 16 Execution Units, dynamically scaling up to 1200 MHz. The BGA design allowed OEMs to design thinner motherboards, reducing the overall footprint of the laptop. This architectural choice was crucial for Apple's design of the Retina MacBook Pro, allowing them to fit high-end components into an unprecedentedly thin chassis.
CPU Design
4 cores, 8 threads, locked, soldered BGA package.
Memory Subsystem
Dual-channel DDR3-1600.
PCIe & I/O
16 PCIe 3.0 lanes.
Overclocking
Locked multiplier.
- 22nm process node
- PCIe 3.0 support
- Improved HD 4000 graphics
Key Highlights
- Solid quad-core multi-threading
- Enabled thinner laptop designs
- Good base clock for mobile
- Supports VT-d for virtualization
- 45W TDP requires robust cooling
- Soldered to motherboard (BGA)
- Uses obsolete DDR3 memory
- HD 4000 graphics are weak for modern gaming
History
Launched in April 2012, the Core i7-3615QM was a critical component in Intel's Ivy Bridge mobile rollout, specifically targeting the premium OEM market. As a BGA-only variant of the 3610QM, it was designed for manufacturers who wanted to eliminate the cost and space associated with socketed CPUs. This chip is historically significant for its role in enabling the 2012 Retina MacBook Pro.
Apple's quest to create an unprecedentedly thin professional laptop required a processor that could be soldered directly to a compact logic board without sacrificing quad-core performance. The 3615QM fit this need perfectly, offering 45W of processing power in a footprint that allowed for larger batteries and thinner profiles. While its soldered nature was initially seen as a downside by the PC enthusiast community, it set the precedent for the entire laptop industry, which eventually abandoned socketed mobile processors entirely.
The 3615QM stands as a turning point in laptop design, prioritizing form factor over modularity.
Improvements over Previous Generation
- 22nm process node
- PCIe 3.0 support
- Improved HD 4000 graphics
Alternatives & Competitors
Should You Buy It?
Not Recommended for the right buyer
Purchasing a used 2012 MacBook Pro
Avoid if…
- You need a CPU you can upgrade later
- You are buying a new laptop
- You want modern single-core performance
Use Cases
Interesting Facts
It is a BGA-only version of the i7-3610QM.
Uses the FC-BGA1224 package.
Contains 1.4 billion transistors on a 160 mm² die.
Part number is SR0MP.
Famously used in the 2012 MacBook Pro Retina 15-inch.
Features HD 4000 graphics with a max dynamic frequency of 1200 MHz.
Supports Intel Wireless Display (WiDi).
Cannot be upgraded as it is soldered.
Introduced native PCIe 3.0 support to mobile platforms.
Max TDP is 45W.
People Also Ask
Is the i7-3615QM good for gaming?
It can still handle older games and esports titles, but will bottleneck modern GPUs in new AAA games.
Can the i7-3615QM be overclocked?
No, it has a locked multiplier.
Can I upgrade the i7-3615QM in my laptop?
No, it is soldered to the motherboard using the BGA 1224 socket.
What is the TDP of the i7-3615QM?
It has a Thermal Design Power (TDP) of 45 Watts.
Does the i7-3615QM have integrated graphics?
Yes, it includes Intel HD Graphics 4000.
What socket does the i7-3615QM use?
It uses the Intel BGA 1224 socket.
Does it support Hyper-Threading?
Yes, it has 4 cores and 8 threads.
What memory does it support?
It supports dual-channel DDR3-1600 memory.
What is the max turbo of the i7-3615QM?
The maximum turbo boost is 3.3 GHz.
Does it support PCIe 3.0?
Yes, it supports 16 lanes of PCIe 3.0.
Frequently Asked Questions
What is the base clock of the i7-3615QM?
The base clock is 2.3 GHz.
What is the L3 cache size?
It has 6 MB of L3 cache.
What generation is the i7-3615QM?
It is a 3rd Generation Intel Core processor (Ivy Bridge).
Is the i7-3615QM unlocked?
No, it has a locked multiplier.
What is the max graphics dynamic frequency?
The HD 4000 graphics can boost up to 1200 MHz.
What is the max memory bandwidth?
The max memory bandwidth is 25.6 GB/s.
Does it support AVX?
Yes, it supports AVX instructions.
Can it run Windows 11?
Officially unsupported, but workarounds exist.
Is it good for video editing?
It is decent for 1080p editing, but 4K will be slow due to the 22nm architecture.
What laptops use the i7-3615QM?
It was famously used in the 2012 MacBook Pro Retina 15-inch.