MacBook Air 13 (M3) vs MacBook Air 15 (M3)

Both MacBook Air models share the same M3 8-core CPU and 10-core GPU, but the 13-inch is fanless with 10.5 W sustained power, while the 15-inch runs at 12 W — offering marginally better sustained performance under load. The 13-inch model is best for students and mobile professionals who prioritize portability, with 1.237 kg weight and 18-hour battery life for web browsing and office tasks. The 15-inch model suits content creators needing a larger 15.3-inch display and 66.5 Wh battery for extended video editing sessions, where the extra screen real estate and 12% longer battery life justify the 21% higher weight. In UAE at AED 5899 vs AED 6899, the 13-inch is better because it saves AED 1000 with identical performance for most tasks. In India at ₹144900 vs ₹169900, the 13-inch wins on value because it delivers the same CPU/GPU at ₹25000 less without sacrificing daily usability.