CPU Comparison
Intel Core i5-2557M vs Intel Core i5-430M
A side-by-side comparison of specs, performance and value. The Intel Core i5-2557M is a low-voltage Sandy Bridge dual-core processor with a 17 W TDP, designed for ultraportable laptops where thermal headroom and battery life are primary constraints.
The Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
Noticeably slower than standard-voltage Sandy Bridge in sustained workloads due to thermal throttling in thin chassis.
Handles basic office tasks on Windows 7 but struggles with modern web applications and operating systems.
Gaming
Even weaker than the 35 W variant due to lower sustained clocks. Not viable for any modern game.
The chipset-based GMA HD graphics are weaker than even Sandy Bridge's HD 3000. Not viable for any meaningful gaming.
Virtualization
Technically supports VT-x but too slow for practical virtualization use.
Supports VT-x and VT-d but only 2 cores at relatively low clocks make it impractical.
Efficiency
17 W TDP was efficient for 2011 but modern chips deliver 10x the performance at similar power.
The dual-die design was less efficient than Sandy Bridge's unified approach. 35 W delivers very little performance by modern standards.
Specialized Performance
AI / ML
- No AI acceleration capabilities
- Insufficient compute for any AI workload
- No AI acceleration
- No AVX support
- Insufficient compute for any AI workload
Content Creation
Gaming
- Lower sustained clocks than 35 W variants
- Intel HD 3000 graphics only
- No modern API support
- Graphics handled by chipset, not CPU
- GMA HD is extremely limited
- No modern API support whatsoever
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
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- Intel HD 3000 graphics are completely outdated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
Pros
- Socket G1 allows CPU upgrades to i7-620M
- First generation to bring Turbo Boost to mainstream mobile
- AES-NI encryption support
- VT-x and VT-d virtualization support
- Reliable and well-documented platform
Cons
- No on-die GPU, graphics depend on chipset
- No AVX instruction support
- DDR3-1066 maximum memory speed
- Only 8 GB maximum memory support
- Dual-die design less efficient than Sandy Bridge
- 133 MHz base clock limits fine-grained frequency control
Competitors & Alternatives
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
Intel Core i5-430M
- AMD Turion II N530Rival
Mobile Mainstream
- AMD Athlon II P360Rival
Mobile Mainstream
- Intel Core 2 Duo P8700Rival
Previous Generation Mobile
- Intel Core i5-520MRival
Mobile Performance
- Compare head-to-headIntel Core i5-450MRival
Mobile Mainstream
- Intel Core i7-620MAlt
Best possible Socket G1 upgrade with 2.66 GHz base, 3.33 GHz turbo, and 4 MB L3 cache.
Highest-clocked Arrandale i5 with 2.66 GHz base and 3.33 GHz turbo.
Compare head-to-head- Intel Core i5-2410MAlt
Sandy Bridge successor requiring a new laptop but offering much better performance and on-die graphics.
- Any modern Ryzen 5 laptopAlt
Dramatically superior performance for a new laptop purchase.
Our Verdict on Each
The 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 reviewThe i5-430M was a competent mid-range laptop CPU in early 2010, but its Arrandale architecture with separate CPU and I/O dies, lack of on-die GPU, and absence of AVX make it thoroughly obsolete today.
Best for: Upgrading an existing Socket G1 laptop with a used i7-620M at minimal cost
Read the full reviewFrequently Asked Questions
Which is better, Intel Core i5-2557M or Intel Core i5-430M?
Based on our editorial ratings, the Intel Core i5-2557M comes out ahead with a score of 4.5/10. 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 i5-2557M or Intel Core i5-430M?
For gaming, the Intel Core i5-2557M leads with a gaming performance score of 12/100 among Intel Core i5-2557M and Intel Core i5-430M.
Which uses less power?
The Intel Core i5-2557M has the lowest rated TDP. Power draw across these chips: Intel Core i5-2557M (17 W), Intel Core i5-430M (35 W).
Do Intel Core i5-2557M and Intel Core i5-430M use the same socket?
No. They use different sockets (Intel Core i5-2557M: Intel BGA 1023, Intel Core i5-430M: Intel Socket G1), so each needs a compatible motherboard.
Which is faster in multi-core benchmarks?
The Intel Core i5-2557M posts the highest multi-core benchmark score. Multi-core results: Intel Core i5-2557M (3,200), Intel Core i5-430M (2,800). Benchmark figures are approximate and workload-dependent.