Technology & Compute · Equity Holding
I/ONX High Performance Compute
A heterogeneous AI infrastructure pioneer headquartered in Las Vegas, Nevada — founded and funded by Phoenix Rising Ventures principals, and now grown under its own operating leadership.
Founded it. Funded it. Built it. Now an equity holder.
Phoenix Rising Ventures principals originally founded I/ONX, funded the company, and served as its early operators. The company has since grown under its own dedicated operating leadership. Today, Phoenix Rising Ventures principals hold an equity stake in I/ONX at arm's length — they are not involved in day-to-day operations, and I/ONX is run independently by its own leadership team.
Phoenix Rising Ventures principals originated and funded I/ONX.
Phoenix Rising Ventures principals served as I/ONX's early operators as the company took shape.
I/ONX now operates independently under its own leadership. Phoenix Rising Ventures principals remain an equity holder — the one division in the portfolio they don't operate day-to-day.
Run independently, by its own team.
Justin Horner
Steve Hewlett
Paul Bommarito
I/ONX
High Performance Compute
I/ONX operates under its own independent brand and visual identity, distinct from Phoenix Rising Ventures. Visit their official site for products, technical specs, and the latest from the I/ONX team.
Visit ionxhpc.comSymphony SixtyFour and the Host Tax problem.
I/ONX is a pioneer of heterogeneous AI infrastructure, positioning itself as "redefining the AI lifecycle by eliminating the Host Tax of legacy architectures." Its flagship platform, Symphony SixtyFour, consolidates up to 64 accelerators into a single node and is designed to reduce rack-scale total cost of ownership by more than 50%.