LFE5UM-85 vs XCSU100P
A comparison of the Lattice ECP5 LFE5UM-85 and the AMD Spartan UltraScale+ XCSU100P using the data from both vendors' selection guides.
Side-by-side specifications
| LFE5UM-85 | XCSU100P | |
|---|---|---|
| Vendor / family | Lattice ECP5 | AMD Spartan UltraScale+ |
| Logic (LUT4-equivalent) | 84,000 | 73,600 |
| LUTs as published | 84,000 LUT4 | 46,000 LUT6 |
| Vendor logic figure | — LC | 101,000 SLC |
| DSP | 156 18×18 multipliers | 144 DSP slices |
| Block RAM | 3.7 Mb | 5.1 Mb |
| Large RAM | — | — |
| Max. user I/O | 365 | 478 |
| Transceivers | 4 × SERDES 3.2 Gb/s | 4 × GTH 16.3 Gb/s |
| Hard PCI Express | None | Gen4 x4 |
| Hard processor | None | None |
| Process | 40 nm | 16 nm |
| Configuration memory | SRAM | SRAM |
| Packages | 4 | 5 |
| Design tool | Lattice Diamond | AMD Vivado |
Highlighted values are higher. Logic is compared in LUT4 equivalents; see how FPGA vendors count logic.
Key differences
The LFE5UM-85 has about 14% more logic capacity (84K vs 73.6K LUT4 equivalents).
They use different logic architectures: the LFE5UM-85 is built from LUT4 and the XCSU100P from LUT6, so the raw LUT counts (84K vs 46K) are not directly comparable.
For arithmetic, the LFE5UM-85 has 156 18×18 multipliers against 144 DSP slices on the XCSU100P.
The XCSU100P has more on-chip memory (5.1 Mb vs 3.7 Mb).
Both have transceivers: 4 at up to 3.2 Gb/s on the LFE5UM-85 and 4 at up to 16.3 Gb/s on the XCSU100P.
The LFE5UM-85 is designed with Lattice Diamond and the XCSU100P with AMD Vivado.
Full specifications
See the complete spec sheets with packages and grades: LFE5UM-85 (ECP5) and XCSU100P (Spartan UltraScale+).