These are compatible with Thunderbolt 3 and give the same speed, rated at up to 40Gbps (gigabits per second). The two connection port have been upgraded to Thunderbolt 4. And the unified chip architecture means it doesn't have separate graphics chips or memory. The more energy-efficient M1 MacBook Air runs cooler, and silently, as it doesn't need a fan. The Intel-based MacBook Air has a 1.1GHz Quad-Core Intel Core i5 processor with 16GB RAM (memory) and Intel Iris Plus Graphics (1536MB), plus an internal fan and two Thunderbolt 3 ports. The two laptops are outwardly identical, but the internal changes are extensive. The M1 model is faster, quieter and runs cooler Our own hands-on comparisons with a 2020 equivalent Intel-based MacBook Air put the new M1 MacBook Air ahead in processing performance by a wide margin. What wasn't expected was the widespread reports of spectacular gains in performance and power efficiency, compared with previous Intel-based Mac models and Windows notebooks. Abandoning Intel's chip lineup for a completely new Apple-designed chip architecture has been expected for a long time, following the long-term success of Apple's A-series processors in iPhones and iPads.
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