si.zeRO SolidRun CuBox si.zeRO 2 si.fi
CPU Clock 1GHz 1.008GHz 1.3GHz 1.4GHz
CPU Compatibility* ARMv5 ARMv7 ARMv8 ARMv8
Cores used by RISC OS 1 1 1 1
USB Ports 2 2 2 4
Ethernet Yes Yes Yes WiFi Only
Speed 100mbps up to 470mbps 100mbps 100mbps
HDMI Ports 1 - mini 1 - full 1 - mini 1 - full
HDMI Audio Yes Yes Yes Yes
Max Resolution 3840x2160 - 24Hz 3840x2160 - 60Hz 3840x2160 - 24Hz 3840x2160 - 24Hz
Internal Storage up to 256GB up to 256GB up to 256GB up to 256GB
External Storage† Yes, SSD via USB Yes, SSD via eSATA Yes, SSD via USB Yes, SSD via USB
Size L65mm W30mm H35mm L55mm W55mm H55mm L65mm W30mm H35mm L80mm W70mm H35mm
Volume 0.07 litres 0.16 litres 0.07 litres 0.19 litres
External Case Yes Yes Yes Yes
Price Retired from £299.99 from £59 £115
* ARMv5 is compatible with more older software than ARMv7 or ARMv8
† Available but at extra cost
si.zero - smallest RISC OS computer ever
Acorn and RISC OS Spares and Extras
Acorn and RISC OS Spares and Extras
Acorn and RISC OS Spares and Extras
Because size does matter! si.zeRO 2 is a Raspberry Pi Zero 2, with full sized USB and Ethernet ports added. All nicely sandwiched in a top and bottom case! This is the ultimate micro RISC OS computer - probably the smallest fully functional net-capable RISC OS computer in the world… EVER. Measuring only 65mm x 35mm x 30mm, it has a volume of less than 0.07 litres! Due to the nature of RISC OS on all Raspberry Pi models, it’s probably as fast as the Raspberry Pi 3B+ - straight out of the box. And definitely much smaller, and just a little bit more fun! Specification CPU: RP3A0 overclocked and set to run at 1.3GHz. It is a quad core processor, but RISC OS only uses one core. RAM: 512MB LPDDR2 Power: 5V, supplied via micro USB connector. I/O: 2x full USB Ethernet: 1x 10/100 RJ45 Dimensions: 65mm x 35mm x 30mm Video & Audio: 1080P HD video output. Audio output via mini-HDMI connector Storage: MicroSD card running an enhanced RISC OS image and software Comparison
Probably the smallest net-capable RISC OS computer in the world!
si.zeRO2
16GB si.zeRO 2
A miniature si.zeRO2 computer, complete with 16GB RISC OS 5.28 card and HDMI adaptor
64GB si.zeRO 2
A miniature si.zeRO2 computer, complete with 64GB RISC OS 5.28 card and HDMI adaptor
A miniature si.zeRO2 computer, complete with 128GB RISC OS 5.28 card and HDMI adaptor
128GB si.zeRO2 £15 £15 £15 £49 £69 £89
We only use genuine brand-named SD cards, including Samsung, SanDisk, Toshiba and Kingston. Cards up to 200GB can be supplied. Contact us for details.
si.zeRO 2 - adaptor HAT
If you’ve already got a spare Pi Zero or Pi Zero 2 and don’t need the SD card or the case, this kit provides the ethernet and USB HAT, and the bolts to hold it altogether.
si.zeRO 2 - adaptor HAT and case kit
If you’ve already got a Pi Zero or a Pi Zero 2 and don’t need a RISC OS SD card, this kit provides the ethernet and USB HAT, plus all the case compoonents to make your own si-zeRO
This kit gives you everything you need to turn your existing Pi Zero or Pi Zero 2 into a si.zeRO 16GB mini computer!
si.zero2 - “supply your own Pi” Kit £15 £15 £15 £27 £32 £44