| Limit | x86 | ARMv7 |
|---|---|---|
| System RAM | 64 GB | 4 GB |
| Physical addressing | 36-bit | 32-bit |
| CPUsa | 32 | 4 |
| Virtual address spaceb | 3.5 GB | 2 GB |
a The hardware might further limit the number of CPUs.
b These are the absolute maximum limits for the virtual address space; you can reduce them by setting the RLIMIT_AS resource with setrlimit() .