LFE5UM-85 vs XC7A75T
A comparison of the Lattice ECP5 LFE5UM-85 and the AMD Artix-7 XC7A75T using the data from both vendors' selection guides.
Side-by-side specifications
| LFE5UM-85 | XC7A75T | |
|---|---|---|
| Vendor / family | Lattice ECP5 | AMD Artix-7 |
| Logic (LUT4-equivalent) | 84,000 | 75,520 |
| LUTs as published | 84,000 LUT4 | 47,200 LUT6 |
| Vendor logic figure | — LC | 75,520 LC |
| DSP | 156 18×18 multipliers | 180 DSP slices |
| Block RAM | 3.7 Mb | 3.7 Mb |
| Large RAM | — | — |
| Max. user I/O | 365 | 300 |
| Transceivers | 4 × SERDES 3.2 Gb/s | 8 × GTP 6.6 Gb/s |
| Hard PCI Express | None | Gen2 |
| Hard processor | None | None |
| Process | 40 nm | 28 nm |
| Configuration memory | SRAM | SRAM |
| Packages | 4 | 4 |
| 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 11% more logic capacity (84K vs 75.5K LUT4 equivalents).
They use different logic architectures: the LFE5UM-85 is built from LUT4 and the XC7A75T from LUT6, so the raw LUT counts (84K vs 47.2K) are not directly comparable.
For arithmetic, the XC7A75T has 180 DSP slices against 156 18×18 multipliers on the LFE5UM-85.
Both have transceivers: 4 at up to 3.2 Gb/s on the LFE5UM-85 and 8 at up to 6.6 Gb/s on the XC7A75T.
The LFE5UM-85 is designed with Lattice Diamond and the XC7A75T with AMD Vivado.
Full specifications
See the complete spec sheets with packages and grades: LFE5UM-85 (ECP5) and XC7A75T (Artix-7).