Quick Verdict
A groundbreaking mobile CPU in 2009 that brought 4 cores and 8 threads to laptops, but heavily outdated and power-hungry by modern standards.
Overview
Launch
2009
Status
End-of-lifeGeneration
1st Gen Core i7 (Clarksfield)
Market
Mobile
The Intel Core i7-720QM is a high-end mobile quad-core processor launched in September 2009. Based on the Clarksfield architecture, it features 4 cores and 8 threads with a base clock of 1.6 GHz and a turbo boost up to 2.8 GHz. With a 45W TDP, it brought Nehalem architecture to gaming and workstation laptops. Built on a 45nm process, it includes 6MB of L3 cache and supports dual-channel DDR3 memory, but lacks integrated graphics.
Released in 2009, the i7-720QM was Intel's first true quad-core for laptops. Its 1.6 GHz base and 2.
8 GHz turbo boost, combined with 8 threads, made it a powerhouse for gaming and content creation. However, its 45W TDP and lack of integrated graphics required robust cooling and discrete GPUs.
Specifications
Performance
Multi-threading helps, but low base clock hurts responsiveness.
8 threads make it decent for legacy VMs.
Can run older games well but lacks single-core speed for modern titles.
45W TDP on 45nm is very hot and inefficient.
- •Requires a discrete GPU
- •Low base clock can bottleneck modern games
- •Good for retro gaming
- •No AI hardware
Architecture
45nm
Process Node
Clarksfield
Codename
4C / 8T
Core Config
6 MB
L3 Cache
45 W
TDP
Architecture Overview
The Core i7-720QM is built on the Clarksfield architecture, which brought the Nehalem microarchitecture to the mobile sector. Unlike the Arrandale dual-cores that followed, Clarksfield was a monolithic 45nm die containing four cores and 6MB of shared L3 cache. It introduced an integrated memory controller supporting dual-channel DDR3-1333, significantly increasing memory bandwidth compared to the previous Core 2 Quad mobile chips. The 720QM operates with a low 1.6 GHz base clock to stay within its 45W TDP, but Intel Turbo Boost 1.0 can increase the frequency to 2.8 GHz when fewer cores are active, providing a balance between multi-threaded efficiency and single-threaded burst performance. Crucially, Clarksfield does not feature integrated graphics, requiring all laptops to use a discrete GPU. The processor uses the Socket G1 (rPGA988A) interface, making it upgradeable in certain high-end laptops. It also supports Hyper-Threading, allowing 8 simultaneous threads, a first for mobile processors.
CPU Design
4 cores, 8 threads, 6MB L3 cache.
Memory Subsystem
Dual-channel DDR3-1333.
PCIe & I/O
PCIe 2.0 x16.
Overclocking
Locked.
- Integrated memory controller
- Hyper-Threading
- Turbo Boost
Key Highlights
- True 4-core, 8-thread design
- Socketed (Socket G1)
- Supports DDR3-1333
- Turbo Boost technology
- Very high power consumption (45W)
- Low 1.6 GHz base clock
- No integrated graphics
- Obsolete 45nm process
History
Launched in September 2009, the Core i7-720QM was a trailblazer for mobile computing. Before this chip, laptop quad-cores were essentially repurposed desktop dies running at lower frequencies. Clarksfield was Intel's first true mobile quad-core based on the Nehalem microarchitecture, introducing an integrated memory controller and Hyper-Threading to the laptop space.
The 720QM became the heart of high-end gaming and workstation laptops, offering 8 threads of compute power. Its low 1.6 GHz base clock was a necessity of the 45nm process and 45W TDP, but Turbo Boost allowed it to reach 2.
8 GHz when thermal headroom permitted. The lack of integrated graphics meant these laptops always required discrete GPUs, driving up system cost and power consumption. The 720QM established the 'QM' suffix as the standard for mobile quad-cores, a naming convention that persisted for generations.
It paved the way for the highly successful Sandy Bridge mobile platform.
Improvements over Previous Generation
- Integrated memory controller
- Hyper-Threading
- Turbo Boost
Alternatives & Competitors
Should You Buy It?
Not Recommended for the right buyer
Retro gaming laptop repair
Avoid if…
- Modern computing
- Battery-powered use
- Modern gaming
Use Cases
Interesting Facts
It was Intel's first quad-core mobile Core i7.
It uses the Clarksfield 45nm monolithic die.
It lacks integrated graphics entirely.
The base clock is very low at 1.6 GHz to save power.
It can turbo boost up to 2.8 GHz.
It uses the Socket G1 (rPGA) interface.
It has 6MB of L3 Smart Cache.
Tjmax is 100°C.
Launched in September 2009.
It was the processor of choice for high-end gaming laptops of its era.
People Also Ask
When was the Core i7-720QM released?
It was released on September 23rd, 2009.
Is the Core i7-720QM good for gaming?
It is okay for retro gaming, but its low base clock and lack of modern features make it unsuitable for new games.
Does the Core i7-720QM have integrated graphics?
No, it does not have integrated graphics; a discrete GPU is required.
How many cores does the Core i7-720QM have?
It has 4 cores and 8 threads.
What is the TDP of the Core i7-720QM?
The TDP is 45 Watts.
What socket does the Core i7-720QM use?
It uses Intel Socket G1 (rPGA988A).
Can the Core i7-720QM be upgraded?
Yes, it is socketed and can be swapped in compatible laptops.
What is the base clock of the Core i7-720QM?
The base clock is 1.6 GHz.
What is the turbo boost speed of the Core i7-720QM?
It can turbo boost up to 2.8 GHz.
Does the Core i7-720QM support ECC memory?
No, it does not support ECC memory.
Frequently Asked Questions
What is the cache size of the Core i7-720QM?
It has 6MB of L3 Smart Cache.
What memory speed does the Core i7-720QM support?
It supports DDR3 memory up to 1333 MT/s.
Does the Core i7-720QM support virtualization?
Yes, it supports VT-x and VT-d.
What is the maximum temperature for the Core i7-720QM?
The maximum junction temperature is 100°C.
Is the Core i7-720QM still manufactured?
No, it is End-of-life.
What process node is the Core i7-720QM built on?
It is built on a 45nm process.
What chipsets support the Core i7-720QM?
Compatible chipsets include PM55, HM55, QM57, and HM57.
What was the launch price of the Core i7-720QM?
The launch price was $364.
Does the Core i7-720QM support Hyper-Threading?
Yes, it supports 8 threads on 4 cores.
Why does the 720QM have a low base clock?
To stay within the 45W TDP on the 45nm process.