It's incredible to think that just 15 years ago, the cheapest PC you could purchase would set you back at least $500 or so. Today, you can buy a reasonably capable computer for less than you might spend on tonight's dinner.

The latest entry in the surprisingly popular sub-$20 computer category is the PINE 64, a new offering from a startup by the same name that aims to deliver the world's most affordable 64-bit single board computer.

One could think of the PINE A64 as a smartphone without the phone. It's powered by a quad-core ARM Cortex A53 SoC clocked at 1.2GHz alongside a dual-core Mali 400 MP2 GPU. The board can be equipped with your choice of 512MB, 1GB or 2GB of DDR3 memory while storage needs are taken care of via microSD card slot (supports capacities of up to 256GB).

Connectivity-wise, PINE 64 includes two USB 2.0 ports, an Ethernet jack, a 4K HDMI output, a 3.5mm audio / mic output and two I/O expansion buses. The more expensive PINE A64+ adds three additional ports for optional accessories like a camera or touch panel module.

The best part about PINE 64 is the price - it starts at just $15.

If you're interested in checking out the PINE 64, you'll need to head over to Kickstarter and back the project. The Pine 64 campaign has already blown past its initial goal of $31,416 with more than $80,000 pledged and 44 days remaining.

PINE 64 is expected to ship in February 2016.