LFE3-70EA vs XC6SLX75T
A comparison of the Lattice LatticeECP3 LFE3-70EA and the AMD Spartan-6 XC6SLX75T using the data from both vendors' selection guides.
Side-by-side specifications
| LFE3-70EA | XC6SLX75T | |
|---|---|---|
| Vendor / family | Lattice LatticeECP3 | AMD Spartan-6 |
| LUTs as published | 67,000 LUT4 | 46,648 LUT6 |
| LUT type | 4-input look-up table | 6-input look-up table, fracturable into two LUT5 with shared inputs |
| LUT4 equivalent (approx.) | ≈67,000 | ≈74,637 |
| CoreScore (SERV cores) | — | — |
| Vendor logic figure | — | 74,637 LC |
| DSP | 128 18×18 multipliers | 132 DSP48A1 slices |
| Block RAM | 4.3 Mb | 3 Mb |
| Large RAM | — | — |
| Max. user I/O | 490 | 348 |
| Transceivers | 12 × SERDES 3.2 Gb/s | 8 × GTP 3.2 Gb/s |
| Hard PCI Express | None | Gen1 x1 |
| Hard processor | None | None |
| Process | 65 nm | 45 nm |
| Configuration memory | SRAM | SRAM |
| Packages | 3 | 3 |
| Design tool | Lattice Diamond | AMD ISE Design Suite |
Highlighted values are higher. LUT counts are shown as published; the LUT4 equivalent is an approximation to compare different LUT types, see how FPGA vendors count logic. Add up to two more devices to this comparison.
Key differences
The XC6SLX75T has about 11% more logic capacity (74.6K vs 67K LUT4 equivalents).
They use different logic architectures: the LFE3-70EA is built from LUT4 and the XC6SLX75T from LUT6, so the raw LUT counts (67K vs 46.6K) are not directly comparable.
For arithmetic, the XC6SLX75T has 132 DSP48A1 slices against 128 18×18 multipliers on the LFE3-70EA.
The LFE3-70EA has more on-chip memory (4.3 Mb vs 3 Mb).
The LFE3-70EA is designed with Lattice Diamond and the XC6SLX75T with AMD ISE Design Suite.
Full specifications
See the complete spec sheets with packages and grades: LFE3-70EA (LatticeECP3) and XC6SLX75T (Spartan-6).