CPU Comparison
Intel Core i5-2540M vs Intel Core i5-2557M
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.
Noticeably slower than standard-voltage Sandy Bridge in sustained workloads due to thermal throttling in thin chassis.
Gaming
Cannot run modern AAA titles. Only suitable for very old or lightweight games at low resolutions.
Even weaker than the 35 W variant due to lower sustained clocks. Not viable for any modern game.
Virtualization
Can run a single lightweight VM but lacks the cores and memory bandwidth for serious virtualization.
Technically supports VT-x but too slow for practical virtualization use.
Efficiency
35 W TDP is high by modern mobile standards; current chips deliver far more performance per watt.
17 W TDP was efficient for 2011 but modern chips deliver 10x the performance at similar power.
Specialized Performance
AI / ML
- No AI acceleration instructions
- No NPU or matrix multiplication support
- Cannot run modern AI workloads
- No AI acceleration capabilities
- Insufficient compute for any AI workload
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
- Lower sustained clocks than 35 W variants
- Intel HD 3000 graphics only
- No modern API support
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
- 17 W TDP enabled truly portable laptop designs
- Turbo boost to 2.7 GHz helps burst workloads
- AES-NI and VT-x support despite low power
- Same feature set as standard-voltage Sandy Bridge
Cons
- 1.7 GHz base clock was slow even in 2011
- Sustained performance suffers in thin chassis with limited cooling
- BGA package cannot be upgraded
- Intel HD 3000 graphics are completely outdated
- Massive performance gap versus modern low-voltage processors
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
Intel Core i5-2557M
- AMD A4-3305MRival
Mobile Low-Voltage
- AMD E-450Rival
Mobile APU
- Compare head-to-headIntel Core i5-2540MRival
Mobile Standard Voltage
- Intel Core i3-2367MRival
Mobile Low-Voltage
- Intel Core i7-2637MRival
Mobile Low-Voltage
- Intel Core i5-3317UAlt
Ivy Bridge 17 W successor with HD 4000 graphics and better efficiency.
Haswell ULV with significantly better performance at 15 W TDP.
Compare head-to-head- AMD Ryzen 5 5500UAlt
Modern low-voltage option with 6 cores and 15 W configurable TDP.
Current-generation low-power chip with 12 cores and excellent efficiency.
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 reviewThe i5-2557M sacrificed significant performance to achieve its 17 W TDP, making it a poor choice even in 2011 for anything beyond basic tasks. Modern low-voltage chips deliver dramatically more performance at similar power levels.
Best for: None, this processor cannot be purchased separately
Read the full reviewFrequently Asked Questions
Which is better, Intel Core i5-2540M or Intel Core i5-2557M?
Based on our editorial ratings, the Intel Core i5-2540M comes out ahead with a score of 5.5/10. 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 Intel Core i5-2557M?
For gaming, the Intel Core i5-2540M leads with a gaming performance score of 15/100 among Intel Core i5-2540M and Intel Core i5-2557M.
Which uses less power?
The Intel Core i5-2557M has the lowest rated TDP. Power draw across these chips: Intel Core i5-2540M (35 W), Intel Core i5-2557M (17 W).
Do Intel Core i5-2540M and Intel Core i5-2557M use the same socket?
No. They use different sockets (Intel Core i5-2540M: Intel Socket G2 (988B), Intel Core i5-2557M: Intel BGA 1023), so each needs a compatible motherboard.
Which is faster in multi-core benchmarks?
The Intel Core i5-2540M posts the highest multi-core benchmark score. Multi-core results: Intel Core i5-2540M (3,800), Intel Core i5-2557M (3,200). Benchmark figures are approximate and workload-dependent.