FPGA & adaptive SoC databook · online editionRev. 2026.10

5CGXC4 vs XCSU45P

A comparison of the Altera Cyclone V 5CGXC4 and the AMD Spartan UltraScale+ XCSU45P using the data from both vendors' selection guides.

Side-by-side specifications

5CGXC4XCSU45P
Vendor / familyAltera Cyclone VAMD Spartan UltraScale+
Logic (LUT4-equivalent)37,73638,400
LUTs as published18,868 ALMs24,000 LUT6
Vendor logic figure50,000 LE53,000 SLC
DSP70 variable-precision DSP blocks96 DSP slices
Block RAM2.4 Mb2.5 Mb
Large RAM——
Max. user I/O336262
Transceivers6 × XCVR 3.125 Gb/s4 × GTH 16.3 Gb/s
Hard PCI ExpressGen1Gen4 x4
Hard processorNoneNone
Process28 nm16 nm
Configuration memorySRAMSRAM
Packages53
Design toolAltera Quartus PrimeAMD Vivado

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

Key differences

Both devices offer similar logic capacity: 37.7K and 38.4K LUT4 equivalents.

They use different logic architectures: the 5CGXC4 is built from ALMs and the XCSU45P from LUT6, so the raw LUT counts (18.9K vs 24K) are not directly comparable.

For arithmetic, the XCSU45P has 96 DSP slices against 70 variable-precision DSP blocks on the 5CGXC4.

Both have transceivers: 6 at up to 3.125 Gb/s on the 5CGXC4 and 4 at up to 16.3 Gb/s on the XCSU45P.

The 5CGXC4 is designed with Altera Quartus Prime and the XCSU45P with AMD Vivado.

Full specifications

See the complete spec sheets with packages and grades: 5CGXC4 (Cyclone V) and XCSU45P (Spartan UltraScale+).