Naked DSL’s maximum theoretical speeds are 24Mbps for download, and 1Mbps for upload. Your actual internet speeds will be determined by how far your home is from your local exchange (the building where your suburb is connected to the wider internet) and the state of the copper-wiring running down your street.
As a rule of thumb, you can live as far as 1km from your local exchange before you start to notice speed degradation. If you live further than 3km from your exchange, you’ll quite possibly get speeds under 10Mbps.
The number of other services in your area and electrical interference from outside sources can also affect your Naked DSL internet speeds.