LFE5UM-45 vs XC7A35T
A comparison of the Lattice ECP5 LFE5UM-45 and the AMD Artix-7 XC7A35T using the data from both vendors' selection guides.
Side-by-side specifications
| LFE5UM-45 | XC7A35T | |
|---|---|---|
| Vendor / family | Lattice ECP5 | AMD Artix-7 |
| Logic (LUT4-equivalent) | 44,000 | 33,280 |
| LUTs as published | 44,000 LUT4 | 20,800 LUT6 |
| Vendor logic figure | — LC | 33,280 LC |
| DSP | 72 18×18 multipliers | 90 DSP slices |
| Block RAM | 1.9 Mb | 1.8 Mb |
| Large RAM | — | — |
| Max. user I/O | 245 | 250 |
| Transceivers | 4 × SERDES 3.2 Gb/s | 4 × GTP 6.6 Gb/s |
| Hard PCI Express | None | Gen2 |
| Hard processor | None | None |
| Process | 40 nm | 28 nm |
| Configuration memory | SRAM | SRAM |
| Packages | 3 | 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-45 has about 32% more logic capacity (44K vs 33.3K LUT4 equivalents).
They use different logic architectures: the LFE5UM-45 is built from LUT4 and the XC7A35T from LUT6, so the raw LUT counts (44K vs 20.8K) are not directly comparable.
For arithmetic, the XC7A35T has 90 DSP slices against 72 18×18 multipliers on the LFE5UM-45.
Both have transceivers: 4 at up to 3.2 Gb/s on the LFE5UM-45 and 4 at up to 6.6 Gb/s on the XC7A35T.
The LFE5UM-45 is designed with Lattice Diamond and the XC7A35T with AMD Vivado.
Full specifications
See the complete spec sheets with packages and grades: LFE5UM-45 (ECP5) and XC7A35T (Artix-7).