# Hardware and System Performance

Disks, CPU, RAM, etc

# Check devices and connections

List disks

```
lsblk
```

List PCI controller connections:

```
lspci
```

List CPU details

```
lscpu
```

List USB bus devices

```
lsusb
```

# RAM

##### View current RAM configuration

```
lsmem
```

##### View current RAM usage (human readable)

```
free -h
```

Older systems might not like -h, you can also run the command without it.