FPGA & adaptive SoC databook · online editionRev. 2026.10

5CSXC6 vs A3C 135

A comparison of the Altera Cyclone V 5CSXC6 and the Altera Agilex 3 A3C 135 using the data from both vendors' selection guides.

Side-by-side specifications

5CSXC6A3C 135
Vendor / familyAltera Cyclone VAltera Agilex 3
Logic (LUT4-equivalent)83,82091,600
LUTs as published41,910 ALMs45,800 ALMs
Vendor logic figure110,000 LE135,110 LE
DSP112 variable-precision DSP blocks184 variable-precision DSP blocks
Block RAM5.4 Mb6.9 Mb
Large RAM——
Max. user I/O288392
Transceivers9 × XCVR 3.125 Gb/s4 × XCVR 12.5 Gb/s
Hard PCI ExpressGen1Gen3 x4
Hard processor2× Arm Cortex-A92× Arm Cortex-A55 (optional)
Process28 nmIntel 7
Configuration memorySRAMSRAM
Packages23
Design toolAltera Quartus PrimeAltera Quartus Prime

Highlighted values are higher. Logic is compared in LUT4 equivalents; see how FPGA vendors count logic.

Key differences

The A3C 135 has about 9% more logic capacity (91.6K vs 83.8K LUT4 equivalents).

For arithmetic, the A3C 135 has 184 variable-precision DSP blocks against 112 variable-precision DSP blocks on the 5CSXC6.

The A3C 135 has more on-chip memory (6.9 Mb vs 5.4 Mb).

Both have transceivers: 9 at up to 3.125 Gb/s on the 5CSXC6 and 4 at up to 12.5 Gb/s on the A3C 135.

The 5CSXC6 is designed with Altera Quartus Prime and the A3C 135 with Altera Quartus Prime.

Full specifications

See the complete spec sheets with packages and grades: 5CSXC6 (Cyclone V) and A3C 135 (Agilex 3).