Spending $1,999 on Apple’s new M6 MacBook Pro won’t give you every performance improvement the chip offers. One upgrade is reserved for buyers who choose more memory.
Apple’s technical specifications show that the base 14-inch MacBook Pro with 16GB of unified memory retains the same 153GB/s memory bandwidth as its M5 predecessor.
Only configurations with 24GB or 32GB of memory receive the faster 170GB/s bandwidth, an improvement of roughly 11%.
Why memory bandwidth matters
Memory bandwidth determines how quickly the processor can access and transfer data from memory. Higher bandwidth is particularly useful for demanding workloads such as video editing, 3D rendering, and machine learning.
Because Apple silicon uses unified memory shared by the CPU and GPU, bandwidth can affect performance when multiple components need to access large amounts of data simultaneously.
That doesn’t mean the 16GB M6 MacBook Pro performs the same as the M5. Its newer CPU and GPU still deliver performance improvements, but buyers won’t benefit from the additional memory bandwidth unless they upgrade to at least 24GB.
It’s an important distinction for a laptop that already starts at $1,999 with 16GB of memory and 1TB of storage.
How the M6 compares with Apple’s Pro and Max chips
Even at 170GB/s, the standard M6 still falls well short of Apple’s higher-end processors in memory bandwidth.
| Chip | Memory Bandwidth |
|---|---|
| M6 (16GB) | 153GB/s |
| M6 (24GB or 32GB) | 170GB/s |
| M5 Pro | 307GB/s |
| M5 Max | Up to 614GB/s |
Those differences help explain why Apple’s Pro and Max chips remain better suited to sustained, memory-intensive professional workloads.
The M6 MacBook Pro is available in Space Black and Silver, with configurations offering up to 32GB of unified memory and 4TB of storage.
Pre-orders open October 28, with availability beginning November 6.
