2. 71V65603S150BQGI Substitution Conclusion The 71V65603S150BQGI also meets the hardware requirements for a direct replacement of the original 71V65703S85BQG, constituting a high-performance alternative. It maintains full compatibility with the original part regarding core memory parameters, power supply, and package. The key differentiating factor remains speed: its clock frequency is increased to 150MHz, with the access time reduced to 3.8ns. This part delivers the highest peak data throughput and fastest response time, significantly enhancing the performance ceiling for systems requiring high-speed data buffering or processing. Similar to the 133MHz variant, post-replacement validation must focus on signal integrity and timing margin at the elevated frequency to ensure address, data, and control signals remain within specification under the 150MHz clock. Furthermore, the "I" suffix typically denotes an industrial temperature range. If the original design was for commercial-grade applications, this substitute offers an additional advantage in terms of temperature adaptability.