Quick Verdict
A rare socketed mobile CPU that offers great upgradeability for older laptops, though performance is outdated.
Overview
Launch
2011
Status
End-of-lifeGeneration
2nd Gen (Sandy Bridge)
Market
Mobile
The Intel Core i7-2820QM in its rPGA988B (Socket G2) variant offers the exact same performance as its BGA counterpart but features a socketed design. This allowed system builders and users to upgrade their laptops without replacing the entire motherboard, a feature that was becoming rare even in 2011. With 4 cores and 8 threads, a base clock of 2.3 GHz, and a turbo boost of 3.4 GHz, it delivered robust performance for mobile workstations. The 32nm Sandy Bridge architecture ensures good IPC, while the 8MB L3 cache provides a noticeable boost in data-intensive applications. It supports dual-channel DDR3 memory and includes Intel HD 3000 graphics. The 45W TDP means it was intended for thicker, performance-oriented laptops with dedicated cooling. Though end-of-life, the socketed nature of this chip makes it interesting for collectors and those maintaining legacy gaming laptops.
The Core i7-2820QM (rPGA) features a Socket G2 design, allowing users to upgrade older laptops. It offers 4 cores, 8 threads, and 8MB of cache for solid legacy performance.
Specifications
Performance
Adequate for basic office tasks and web browsing.
Supports VT-x/VT-d, making it okay for basic VMs.
Good for retro games, but fails at modern titles.
45W TDP is high by modern standards, impacting battery life.
- •HD 3000 is obsolete
- •Requires discrete GPU for older 3D games
- •Fine for 2D indie games
- •No AI acceleration hardware
- •Lacks modern AVX instructions
Architecture
32nm
Process Node
Sandy Bridge
Codename
4C / 8T
Core Config
8 MB
L3 Cache
45 W
TDP
Architecture Overview
Featuring the Sandy Bridge microarchitecture, the i7-2820QM integrates the CPU, memory controller, and graphics on a single 32nm die. The rPGA packaging connects this die to the Socket G2 motherboard via pins, allowing for easier replacement. The architecture employs a ring bus to connect the 4 cores and 8MB L3 cache, ensuring low-latency communication. Intel's Turbo Boost 2.0 dynamically scales the frequency up to 3.4 GHz based on thermal headroom. The integrated HD 3000 graphics share the L3 cache, providing adequate performance for multimedia tasks of its era. The architecture also introduced AVX instructions, enhancing floating-point throughput. While the mobile socket allowed upgrades, the architecture itself is fundamentally similar to the BGA version, prioritizing power efficiency and integration, which set the stage for future mobile processor designs.
CPU Design
4 cores with Hyper-Threading.
Memory Subsystem
Dual-channel DDR3 support.
PCIe & I/O
16 PCIe 2.0 lanes.
Overclocking
Locked multiplier.
- Socketed upgradability
- Better IPC
- More efficient
Key Highlights
- Socketed design (rPGA)
- 8MB L3 cache
- 4 cores / 8 threads
- Good retro performance
- Obsolete by modern standards
- 45W TDP
- No Windows 11 support
- Weak integrated graphics
History
Introduced in January 2011, the Socket G2 version of the Core i7-2820QM provided a unique proposition in the mobile market: upgradability. While most laptops were moving towards soldered components, Socket G2 allowed users to swap out their CPU. This made the i7-2820QM a popular choice among enthusiasts looking to extend the life of their Sandy Bridge laptops.
It powered many high-end mobile workstations and gaming laptops of the time, offering a blend of high clock speeds and substantial cache. As Intel transitioned to Ivy Bridge, the socket was retired, ending the era of easily upgradable mobile CPUs for most consumers. Today, finding a laptop with this socketed processor is rare, and while the CPU itself is obsolete, its existence marks an important period in laptop design where user serviceability was still a priority for some manufacturers.
Improvements over Previous Generation
- Socketed upgradability
- Better IPC
- More efficient
Alternatives & Competitors
Should You Buy It?
Not Recommended for the right buyer
Upgrading a Socket G2 laptop
Avoid if…
- New builds
- Modern gaming
- Power efficiency needs
Use Cases
Interesting Facts
The rPGA988B socket allowed users to upgrade their laptop CPU, a rare feature today.
Features 8MB of L3 cache, doubling the amount found in lower-tier i7 models.
Part of the Sandy Bridge 'Tock' architecture release.
Supports Intel VT-d for advanced virtualization.
Has a base clock of 2.3 GHz and boosts to 3.4 GHz.
Lacks DDR4 support, relying on DDR3.
The 'QM' stands for Quad-core Mobile.
Cannot be overclocked due to a locked multiplier.
Compatible with HM65, HM67, QM67 chipsets.
Built on a 32nm manufacturing process.
People Also Ask
Is the Core i7-2820QM socketed?
Yes, the rPGA version uses Socket G2 and can be upgraded.
Can I upgrade my laptop with an i7-2820QM?
If your laptop has a Socket G2 and a compatible BIOS, yes.
What is the max turbo of the i7-2820QM?
The maximum turbo frequency is 3.4 GHz.
Does the i7-2820QM support Windows 11?
No, it is not on the supported CPU list for Windows 11.
What is the TDP of the i7-2820QM?
The TDP is 45 Watts.
How much L3 cache does the i7-2820QM have?
It has 8MB of L3 cache.
Is the i7-2820QM good for gaming?
It can play older games, but is unsuitable for modern gaming.
Does the i7-2820QM have Hyper-Threading?
Yes, it has 4 cores and 8 threads.
What memory does the i7-2820QM support?
It supports dual-channel DDR3 memory.
Is the i7-2820QM unlocked?
No, the multiplier is locked.
Frequently Asked Questions
What generation is the i7-2820QM?
It is a 2nd generation Intel Core processor.
Does the i7-2820QM support DDR4?
No, it supports DDR3 only.
What socket does the rPGA version use?
It uses Socket G2, also known as rPGA988B.
Can the i7-2820QM be overclocked?
No, it is not an unlocked processor.
Does it have integrated graphics?
Yes, it features Intel HD 3000 graphics.
What is the base clock speed?
The base clock is 2.3 GHz.
Does it support AES-NI?
Yes, it includes AES-NI instructions.
What process node is it built on?
It is built on a 32nm process.
What is the maximum memory support?
It supports up to 32GB of RAM.
Does it support VT-d?
Yes, it supports Intel Virtualization Technology.