Quick Verdict
A high-end mobile CPU for its time, offering excellent multi-threaded performance and a large cache for demanding applications.
Overview
Launch
Apr 29th, 2012
Status
End-of-lifeGeneration
Core i7 (Ivy Bridge)
Market
Mobile
The Intel Core i7-3820QM is a premium mobile processor launched in early 2012 as part of the initial Ivy Bridge rollout. Targeted at high-end gaming laptops and mobile workstations, it features four cores and eight threads, delivering robust parallel processing capabilities. It operates at a base clock of 2.7 GHz and can boost up to 3.7 GHz via Intel Turbo Boost 2.0. What distinguishes the 3820QM from lower-tier QM chips is its full 8 MB of L3 SmartCache, which improves performance in data-heavy applications and gaming. With a 45-watt thermal design power, it balances high performance with the thermal constraints of premium mobile chassis. The integrated Intel HD 4000 graphics offer capable multimedia decoding. This CPU was a favorite for enthusiasts seeking top-tier mobile performance without stepping up to the extreme edition MX series, providing an excellent sweet spot of price and multi-threaded power.
The Intel Core i7-3820QM is an Ivy Bridge processor with 4 cores and 8 threads. It features a base clock of 2.7 GHz and boosts up to 3.
7 GHz. With a full 8MB of L3 cache, it offered superior performance for data-heavy workloads in premium laptops.
Specifications
Performance
8 threads and 8MB cache make quick work of office and compiling tasks.
Good for running light VMs on the go.
Handles older games easily and provides good frame rates with a discrete GPU.
22nm Ivy Bridge is less efficient than modern mobile chips.
- •Excellent for 2012-era games
- •Won't bottleneck mid-range mobile GPUs
- •Needs discrete graphics for serious gaming
- •No AI hardware
- •CPU inference is slow
Architecture
22nm
Process Node
Ivy Bridge
Codename
4C / 8T
Core Config
8 MB
L3 Cache
45 W
TDP
Architecture Overview
Built on Intel's 22nm Ivy Bridge microarchitecture, the Core i7-3820QM is engineered for premium mobile performance. It features a 4-core, 8-thread design via Hyper-Threading. The standout architectural feature compared to lower-tier QM chips is its full 8 MB of L3 SmartCache, which significantly reduces memory latency for large datasets and game assets. The chip integrates the Intel HD 4000 graphics engine, dynamically scaling between 650 MHz and 1250 MHz. The architecture supports dual-channel DDR3 memory at 1600 MT/s and provides 16 PCIe 3.0 lanes. Tuned for a 45W TDP, the 3820QM utilizes aggressive turbo boosting to maximize clock speeds up to 3.7 GHz within the thermal limits of premium laptop cooling systems. Its combination of high clocks and full cache makes it uniquely suited for data-heavy mobile workloads.
CPU Design
4 cores, 8 threads, locked multiplier.
Memory Subsystem
Dual-channel DDR3-1600.
PCIe & I/O
16 PCIe 3.0 lanes.
Overclocking
Locked.
- 22nm process
- PCIe 3.0 support
- Better integrated graphics
Key Highlights
- Full 8MB L3 cache
- Good quad-core performance
- Removable PGA socket option
- High turbo boost frequencies
- High 45W TDP
- Older 22nm process
- DDR3 only
- Runs hot under load
History
Launched in April 2012, the Core i7-3820QM was Intel's top-tier standard mobile processor upon the release of the Ivy Bridge architecture. It succeeded the Sandy Bridge i7-2860QM, offering improved performance per clock and the introduction of PCIe 3.0.
During this era, the gaming laptop market was consolidating, and the 3820QM became the CPU of choice for premium 15-inch and 17-inch gaming rigs. Its full 8MB cache and high turbo frequencies made it ideal for handling the demanding game engines of the early 2010s. The 3820QM represented a time when mobile CPUs were nearing desktop parity for quad-core performance, albeit at the cost of significant heat and power draw.
It laid the groundwork for the high-performance mobile gaming segment, proving that laptops could legitimately compete with desktops.
Improvements over Previous Generation
- 22nm process
- PCIe 3.0 support
- Better integrated graphics
Alternatives & Competitors
Should You Buy It?
Recommended for the right buyer
Buying a cheap, used laptop for retro gaming or basic coding.
Avoid if…
- Buying a new laptop
- Modern AAA gaming
- Need modern features like Wi-Fi 6 or Thunderbolt
Use Cases
Interesting Facts
Features a full 8 MB of L3 cache.
Uses the Socket G2 (988B) or BGA 1224.
Contains 1.4 billion transistors.
Die size is 160 mm².
Integrated graphics boost up to 1250 MHz.
Launched in April 2012.
Part number SR0MJ.
Supports Intel vPro.
Has a tCase max of 105°C.
Max turbo frequency is 3.7 GHz.
People Also Ask
Is the Core i7-3820QM good for gaming?
Yes, for older games. It handles 2012-era titles perfectly with a discrete GPU.
Can the Core i7-3820QM be overclocked?
No, the multiplier is locked.
What socket does the i7-3820QM use?
It uses the Intel Socket G2 (988B) or BGA 1224.
Does the i7-3820QM support DDR4?
No, it supports DDR3 only.
Can I upgrade the i7-3820QM in my laptop?
Yes, if it uses the PGA socket version, it can be physically removed and upgraded.
What is the TDP of the Core i7-3820QM?
45 Watts.
How many cores does it have?
4 cores and 8 threads.
Is it compatible with Windows 11?
Officially not supported, but can run it.
What are the integrated graphics?
Intel HD Graphics 4000.
What is the max turbo frequency?
3.7 GHz.
Frequently Asked Questions
Does the i7-3820QM support Hyper-Threading?
Yes, 4 cores and 8 threads.
Does it support ECC memory?
No, ECC is not supported.
What is the L3 cache size?
8 MB.
What chipsets are compatible?
QM77, HM77, HM76, HM75.
Is it good for video editing?
It can handle 1080p editing well, but 4K will be slow.
Can it run 4K video?
Yes, via hardware decoding on the iGPU.
Does it support Intel Optane?
No, Optane was introduced much later.
What is the base clock?
2.7 GHz.
Does it have vPro?
Yes, this SKU supports vPro.
Is it unlocked?
No.