CPU Comparison
Intel Core i5-2540M vs Core i7-2820QM (rPGA)
A side-by-side comparison of specs, performance and value. The Intel Core i5-2540M is a dual-core mobile processor built on the 32nm Sandy Bridge architecture, featuring Hyper-Threading for four threads and an integrated Intel HD 3000 GPU, designed for mainstream laptops released in early 2011.
The Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
Handles basic office tasks but struggles with large spreadsheets, heavy documents, or multitasking with many browser tabs.
Adequate for basic office tasks and web browsing.
Gaming
Cannot run modern AAA titles. Only suitable for very old or lightweight games at low resolutions.
Good for retro games, but fails at modern titles.
Virtualization
Can run a single lightweight VM but lacks the cores and memory bandwidth for serious virtualization.
Supports VT-x/VT-d, making it okay for basic VMs.
Efficiency
35 W TDP is high by modern mobile standards; current chips deliver far more performance per watt.
45W TDP is high by modern standards, impacting battery life.
Specialized Performance
AI / ML
- No AI acceleration instructions
- No NPU or matrix multiplication support
- Cannot run modern AI workloads
- No AI acceleration hardware
- Lacks modern AVX instructions
Content Creation
Gaming
- Intel HD 3000 lacks modern API support
- No DirectX 12 or Vulkan support
- Only playable with pre-2012 titles at low settings
- HD 3000 is obsolete
- Requires discrete GPU for older 3D games
- Fine for 2D indie games
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- AES-NI hardware encryption support
- Reliable and well-tested platform
- Widely available as spare parts
- Intel HD 3000 was a meaningful graphics improvement for its era
- VT-x and VT-d virtualization support
Cons
- Only 2 cores and 4 threads
- No DirectX 12 or modern graphics API support
- 35 W TDP is high for the performance delivered
- Maximum 16 GB DDR3 memory support
- Completely obsolete for any modern demanding workload
Pros
- Socketed design (rPGA)
- 8MB L3 cache
- 4 cores / 8 threads
- Good retro performance
Cons
- Obsolete by modern standards
- 45W TDP
- No Windows 11 support
- Weak integrated graphics
Competitors & Alternatives
Intel Core i5-2540M
- AMD Phenom II N970Rival
Mobile Mainstream
- AMD A6-3410MXRival
Mobile APU
- AMD A8-3510MXRival
Mobile APU
- Compare head-to-headIntel Core i5-560MRival
Previous Generation Mobile
- Intel Core i7-2620MRival
Mobile Performance
Ivy Bridge successor with 22nm process, better integrated graphics, and slightly improved performance.
Compare head-to-headHigher-clocked Ivy Bridge option, still compatible with Socket G2 motherboards.
Compare head-to-head- Any modern AMD Ryzen 5 laptopAlt
Massive performance improvement in every metric for a new laptop purchase.
Modern equivalent tier with 10 cores, vastly superior efficiency and graphics.
Compare head-to-head
Core i7-2820QM (rPGA)
- AMD A8-3530MXRival
Mobile
- Intel Core i7-2720QMRival
Mobile
- Compare head-to-headIntel Core i7-2630QMRival
Mobile
- AMD Phenom II X4 N970Rival
Mobile
- Compare head-to-headIntel Core i5-2540MRival
Mobile
- Intel Core i7-2860QMAlt
Higher clock speeds for better performance.
Cheaper alternative with less cache.
Compare head-to-head- Intel Core i7-2920XMAlt
Extreme Edition with unlocked multiplier.
Ivy Bridge successor with better efficiency.
Compare head-to-headHigher clocked Ivy Bridge alternative.
Compare head-to-head
Our Verdict on Each
The i5-2540M was a solid mid-range mobile chip in 2011, but it is now thoroughly outclassed by modern processors in every metric including efficiency, single-thread speed, and integrated graphics capability.
Best for: Upgrading an existing Socket G2 laptop at minimal cost
Read the full reviewA rare socketed mobile CPU that offers great upgradeability for older laptops, though performance is outdated.
Best for: Upgrading a Socket G2 laptop
Read the full reviewFrequently Asked Questions
Which is better, Intel Core i5-2540M or Core i7-2820QM (rPGA)?
Based on our editorial ratings, the Core i7-2820QM (rPGA) comes out ahead with a score of 6.5/10. That said, the best choice depends on your workload — check the spec and performance breakdown above for gaming, productivity and efficiency differences.
Which is faster for gaming, Intel Core i5-2540M or Core i7-2820QM (rPGA)?
For gaming, the Core i7-2820QM (rPGA) leads with a gaming performance score of 22/100 among Intel Core i5-2540M and Core i7-2820QM (rPGA).
Which uses less power?
The Intel Core i5-2540M has the lowest rated TDP. Power draw across these chips: Intel Core i5-2540M (35 W), Core i7-2820QM (rPGA) (45 W).
Do Intel Core i5-2540M and Core i7-2820QM (rPGA) use the same socket?
Yes — all of these CPUs use the Intel Socket G2 (988B) socket, so they share compatible motherboards.
Which has more cores?
The Core i7-2820QM (rPGA) has the most cores. Core counts: Intel Core i5-2540M (2 cores), Core i7-2820QM (rPGA) (4 cores).
Which is faster in multi-core benchmarks?
The Core i7-2820QM (rPGA) posts the highest multi-core benchmark score. Multi-core results: Intel Core i5-2540M (3,800), Core i7-2820QM (rPGA) (5,400). Benchmark figures are approximate and workload-dependent.