 Nevertheless, several features of the PRISM design were put into later generations of the HP-PA architecture, and the two main proponents of the VLIW concept, Intel and HP, later collaborated on the Itanium.The PRISM was generally the fastest CPU on the market during its short life-span.In comparison with common RISC designs of the era, the PRISM was effectively two CPUs in one, making it roughly double the performance of a RISC CPU running at the same clock speed.