CPU Comparison
Apple M1 vs Intel Core i5-5257U
A side-by-side comparison of specs, performance and value. The Apple M1 is an 8-core ARM-based system-on-a-chip (SoC) that marked Apple’s transition from Intel to its own Apple Silicon for the Mac, combining four high‑performance and four efficiency cores, an 8‑core integrated GPU, and a 16‑core Neural Engine on a 5 nm process.
The Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
Very responsive for everyday tasks, Xcode builds, and light creative work; benefits from fast single‑core and SSD, but heavy multi‑thread workloads are constrained by 8 threads.
Higher base clock and 28W TDP deliver better sustained performance than 15W variants, but dual-core design still limits multi-threaded workloads.
Gaming
Competent for 1080p gaming in macOS and via Rosetta 2 for many titles, but the 8‑core GPU and 8–16 GB memory limit modern AAA performance and resolution scaling.
Iris 6100 was the best integrated GPU in the Broadwell-U lineup, handling older games at 720p-1080p low settings reasonably well for 2015.
Virtualization
Capable for a couple of light VMs, but not ideal for large parallel VM farms due to core count and memory ceiling.
Slightly better than 15W variants but still fundamentally limited by dual-core design.
Efficiency
Outstanding performance per watt; MacBook Air and 13‑inch MacBook Pro with M1 delivered dramatically better battery life and lower heat than comparable Intel Macs.
The 28W TDP reduces efficiency compared to 15W variants, requiring active cooling and reducing battery life in thin laptops.
Specialized Performance
AI / ML
- 16‑core Neural Engine accelerates Core ML models
- CPU and GPU also provide ML accelerators for framework‑level ops
- Not designed for large‑scale training or server‑side inference
- No AI acceleration hardware
- GPU compute insufficient for modern AI workloads
- Not applicable for this processor generation
Content Creation
Gaming
- 8‑core GPU comparable to low‑end discrete GPUs of its era in some Metal titles
- Rosetta 2 adds overhead for x86 games; some titles have compatibility or performance quirks
- 16 GB memory limit and 8 GPU cores cap texture resolutions and frame rates in modern AAA games
- Iris 6100 with 48 EUs was the best Broadwell-U GPU option
- Titles like Dota 2, CS:GO, and League of Legends run at 1080p medium at 30-60 FPS
- eDRAM cache significantly helps GPU performance
- Modern games remain unplayable even at lowest settings
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- Excellent single‑thread performance and responsiveness
- Outstanding performance per watt and battery life
- Integrated GPU much faster than old Intel UHD/Iris in Macs
- Unified memory simplifies development and improves efficiency
- Silent, fanless operation in MacBook Air and Mac mini under light loads
- Strong on‑device ML inference via Neural Engine
Cons
- Only 8 CPU threads; heavy multi‑thread workloads can hit a ceiling
- Max 16 GB unified memory; not user‑upgradeable
- No eGPU support and limited PCIe expansion
- Rosetta 2 translation layer for some x86 apps; not all software is native
- Newer M2/M3 chips and modern x86 CPUs offer more cores, higher clocks, and better GPU performance
Pros
- Best integrated GPU in Broadwell-U i5 lineup with Iris 6100
- 128MB eDRAM benefits both CPU and GPU workloads
- 2.7 GHz base clock is strong for a 2015 dual-core
- Good for Retina display driving and 4K output
- Configurable TDP for OEM flexibility
Cons
- 28W TDP limits use to larger ultrabook designs
- Only 2 physical cores with dual-core limitation
- DDR3 memory is obsolete
- Active cooling required in all implementations
- End-of-life with no security updates
- Not Windows 11 compatible
Competitors & Alternatives
Apple M1
- Intel Core i7-1165G7Rival
Thin‑and‑Light Laptop
- AMD Ryzen 7 5800URival
Thin‑and‑Light Laptop
- Compare head-to-headIntel Core i5-1135G7Rival
Thin‑and‑Light Laptop
- AMD Ryzen 5 4600HRival
Performance Laptop
- Compare head-to-headIntel Core i7-11800HRival
High‑Performance Laptop
- Alt
Same platform with ~18% faster CPU, 35% faster GPU, and support for up to 24 GB unified memory.
Compare head-to-head - Alt
More CPU/GPU cores and higher memory bandwidth for heavier creative workloads.
Compare head-to-head - AMD Ryzen 7 6800UAlt
Modern x86 laptop CPU with higher multi‑thread performance and DDR5 memory.
Higher core count and better sustained multi‑thread performance in thin laptops.
Compare head-to-head- Alt
Newer architecture with better GPU and CPU performance per watt and improved media engines.
Compare head-to-head
Intel Core i5-5257U
- AMD A10-8700PRival
Mobile Mainstream
- AMD FX-7500Rival
Mobile Mainstream
- Intel Core i7-5557URival
Mobile Premium Ultrabook
- Compare head-to-headIntel Core i5-5250URival
Mobile Ultrabook
- AMD A12-8700PRival
Mobile Mainstream
- Intel Core i5-6267UAlt
Skylake successor with Iris 550 and DDR4 support in the same 28W envelope.
- Intel Core i5-8259UAlt
Four cores with Iris Plus 655 for much better multi-threaded and GPU performance.
- Alt
If buying a used MacBook, the M1 MacBook Air offers dramatically better performance and efficiency.
Compare head-to-head - AMD Ryzen 5 4600UAlt
Six cores with Vega graphics in a 15W envelope, far outperforming this chip in every metric.
Iris Xe graphics and four cores on 10nm for a modern thin-and-light experience.
Compare head-to-head
Our Verdict on Each
A landmark chip that delivered class‑leading efficiency and single‑thread speed for thin laptops, still very capable for most users but increasingly outdated compared to M2/M3 and modern x86 rivals in multi‑thread and GPU workloads.
Best for: Used or refurbished M1 MacBook Air / Mac mini for general use, study, or light creative work at a low price
Read the full reviewThe Iris 6100 graphics made this the most capable dual-core Broadwell-U for GPU workloads, but the 28W TDP limited it to larger ultrabook designs and it remains outdated by modern standards.
Best for: Buying a used MacBook Pro 13-inch 2015 for under $150 for basic use with a Retina display
Read the full reviewFrequently Asked Questions
Which is better, Apple M1 or Intel Core i5-5257U?
Based on our editorial ratings, the Apple M1 comes out ahead with a score of 8.8/10. 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, Apple M1 or Intel Core i5-5257U?
For gaming, the Apple M1 leads with a gaming performance score of 72/100 among Apple M1 and Intel Core i5-5257U.
Which uses less power?
The Intel Core i5-5257U has the lowest rated TDP. Power draw across these chips: Intel Core i5-5257U (28 W).
Do Apple M1 and Intel Core i5-5257U use the same socket?
No. They use different sockets (Apple M1: On-package (BGA-style, not user-replaceable), Intel Core i5-5257U: Intel BGA 1168), so each needs a compatible motherboard.
Which has more cores?
The Apple M1 has the most cores. Core counts: Apple M1 (8 cores), Intel Core i5-5257U (2 cores).
Which is faster in multi-core benchmarks?
The Apple M1 posts the highest multi-core benchmark score. Multi-core results: Apple M1 (7,404), Intel Core i5-5257U (2,950). Benchmark figures are approximate and workload-dependent.