Altera’s External Memory Interface Spec Estimator, a parametric tool, allows you to find and compare the performance of the supported external memory interfaces in our FPGA devices. You’ll have the ability to filter down to specific performances based on your own search specifications, and then compare performances across FPGA devices side-by-side by filtering the criteria you choose for analysis. The External Memory Interface Spec Estimator supports DDR3 SDRAM, DDR2 SDRAM, DDR SDRAM, LPDDR2 SDRAM, RLDRAM 3, RLDRAM II, QDR II+ SRAM, and QDR II SRAM interfaces.
The stated performances are the maximum clock rates supported in Altera's FPGA devices based on the listed features across supported high-speed memory standards.
The maximum clock rates are only estimates based on a standalone Altera® ALTMEMPHY or UniPHY with Nios-Based Sequencer and High-Performance Controller II instance generated with the default controller parameters in the MegaCore® intellectual property (IP). For the actual performance of your design, you must always compile and perform timing analysis for your design in Quartus® II software.
The External Memory Interface Spec Estimator replaces the maximum clock rate tables in the Selecting Device, Memory Components, and IP (PDF) section in volume 1 of the External Memory Interfaces Handbook. The devices supported by the External Memory Interface Spec Estimator are the Stratix® V, Stratix IV, Stratix III, Arria® V, Arria II GZ, Arria II GX, Cyclone® V, Cyclone IV, Cyclone III, Hardcopy® IV, and Hardcopy III device families.
The External Memory Interface Spec Estimator tool is available now for beta usage, subject to the Altera External Memory Interface Spec Estimator Disclaimer. We would like feedback so we can fix potential browser compatibility issues and improve the overall value. If you are reporting technical issues, please include the browser and operating system (OS) information.
The External Memory Interface Spec Estimator tool requires Adobe Flash Player 10 in your browser. Click the screenshot above to launch the Altera External Memory Interface Spec Estimator Disclaimer.