CPU Comparison
Intel Core i5-1240P vs Intel Core i5-5287U
A side-by-side comparison of specs, performance and value. The Intel Core i5-1240P is a 12-core mobile processor from the 12th Generation Alder Lake-P lineup, launched in February 2022.
The Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
12 cores ensure snappy performance in heavy multitasking and office applications.
The 2.9 GHz base clock provides the best sustained single-threaded performance in the Broadwell-U i5 range, though dual-core limits multi-tasking capability.
Gaming
Iris Xe 80EU handles esports titles well but struggles with demanding AAA games.
The highest-clocked Iris 6100 in the Broadwell-U lineup provides marginally better gaming than the i5-5257U, but remains limited by dual-core and shared memory architecture.
Virtualization
Easily handles local development virtual machines.
Still limited by dual-core design despite the higher clocks.
Efficiency
Excellent performance-per-watt, ensuring all-day battery life in ultrabooks.
The 28W TDP is a significant power draw for a dual-core processor, resulting in reduced battery life compared to 15W alternatives.
Specialized Performance
AI / ML
- Adequate for background blur and basic audio noise cancellation.
- No dedicated AI silicon.
- No AI acceleration hardware
- Not designed for AI workloads
- Completely unsuitable for modern AI tasks
Content Creation
Gaming
- Suitable for Minecraft, CS:GO, and League of Legends.
- Not designed for high-end gaming without a discrete GPU.
- Supports fast hardware video decoding.
- Iris 6100 at 1100 MHz is the fastest Broadwell-U i5 GPU configuration
- Older esports titles playable at 1080p medium settings
- eDRAM provides a noticeable boost over non-eDRAM variants
- Modern AAA games remain unplayable
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- 12 cores and 16 threads in a 28W package
- Excellent performance-per-watt
- Supports DDR5 and LPDDR5 memory
- Great for heavy multitasking
- Good value compared to i7 variants
Cons
- Not unlocked for overclocking
- Soldered to the motherboard (BGA)
- iGPU slightly slower than i5-1250P
- Can run warm under sustained load
Pros
- Highest CPU clocks in the Broadwell-U i5 lineup
- Iris 6100 with eDRAM for best-in-class integrated GPU
- 3.3 GHz turbo for strong single-threaded performance
- Good build-to-order upgrade for 2015 MacBook Pro
- 128MB eDRAM benefits CPU and GPU alike
Cons
- Only 2 physical cores fundamentally limit performance
- 28W TDP requires active cooling and reduces battery life
- DDR3 memory is obsolete
- Same $315 price as lower-clocked i5-5257U offered questionable value
- Not compatible with Windows 11
- End-of-life with no support
Competitors & Alternatives
Intel Core i5-1240P
- AMD Ryzen 5 6600URival
Mobile
- Compare head-to-headIntel Core i7-1260PRival
Mobile
- AMD Ryzen 5 5600HRival
Mobile
- Compare head-to-headIntel Core i5-1250PRival
Mobile
- Compare head-to-headApple M1 ProRival
Mobile
Better battery life for standard office use.
Compare head-to-head- AMD Ryzen 7 6800UAlt
Superior integrated graphics performance for light gaming.
Lower power variant for thinner designs and longer battery life.
Compare head-to-head- AMD Ryzen 5 5600UAlt
Older but cost-effective alternative with solid performance.
Intel Core i5-5287U
- Intel Core i7-5557URival
Mobile Premium Ultrabook
- AMD A10-8700PRival
Mobile Mainstream
- Compare head-to-headIntel Core i5-5257URival
Mobile Premium Ultrabook
- AMD FX-7500Rival
Mobile Mainstream
- Intel Core i7-5650URival
Mobile Premium Ultrabook
- Intel Core i5-6287UAlt
Skylake successor with Iris 550, DDR4, and improved architecture.
- Alt
The M1 MacBook Air dramatically outperforms this chip in every metric while being fanless.
Compare head-to-head Four cores with Turbo Boost up to 3.9 GHz in a 15W envelope.
Compare head-to-head- AMD Ryzen 5 5600UAlt
Six cores, twelve threads with Vega 7 graphics in a modern, efficient design.
12th-gen hybrid architecture with 12 cores in a 28W envelope offering dramatically more performance.
Compare head-to-head
Our Verdict on Each
A nearly identical alternative to the 1250P, offering exceptional 12-core performance in a 28W envelope with excellent value.
Best for: Purchasing a mid-range premium ultrabook for heavy productivity and light content creation.
Read the full reviewThe top Broadwell-U i5 offers the best single-threaded and GPU performance in its class, but dual-core limits and 28W power draw mean even budget modern chips outperform it comprehensively.
Best for: Purchasing a used MacBook Pro 2015 with this upgrade for under $200 for basic creative work
Read the full reviewFrequently Asked Questions
Which is better, Intel Core i5-1240P or Intel Core i5-5287U?
Based on our editorial ratings, the Intel Core i5-1240P comes out ahead with a score of 8.7/10. 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 i5-1240P or Intel Core i5-5287U?
For gaming, the Intel Core i5-1240P leads with a gaming performance score of 62/100 among Intel Core i5-1240P and Intel Core i5-5287U.
Do Intel Core i5-1240P and Intel Core i5-5287U use the same socket?
No. They use different sockets (Intel Core i5-1240P: Intel BGA 1744, Intel Core i5-5287U: Intel BGA 1168), so each needs a compatible motherboard.
Which has more cores?
The Intel Core i5-1240P has the most cores. Core counts: Intel Core i5-1240P (12 cores), Intel Core i5-5287U (2 cores).
Which is faster in multi-core benchmarks?
The Intel Core i5-5287U posts the highest multi-core benchmark score. Multi-core results: Intel Core i5-5287U (3,120). Benchmark figures are approximate and workload-dependent.