EP4CGX22 vs XC6SLX25T
A comparison of the Altera Cyclone IV EP4CGX22 and the AMD Spartan-6 XC6SLX25T using the data from both vendors' selection guides.
Side-by-side specifications
| EP4CGX22 | XC6SLX25T | |
|---|---|---|
| Vendor / family | Altera Cyclone IV | AMD Spartan-6 |
| LUTs as published | 21,000 LUT4 | 15,032 LUT6 |
| LUT type | 4-input look-up table | 6-input look-up table, fracturable into two LUT5 with shared inputs |
| LUT4 equivalent (approx.) | ≈21,000 | ≈24,051 |
| CoreScore (SERV cores) | — | — |
| Vendor logic figure | 21,000 LE | 24,051 LC |
| DSP | 40 18×18 multipliers | 38 DSP48A1 slices |
| Block RAM | 0.7 Mb | 0.9 Mb |
| Large RAM | — | — |
| Max. user I/O | 150 | 250 |
| Transceivers | 4 × XCVR 3.125 Gb/s | 2 × GTP 3.2 Gb/s |
| Hard PCI Express | Gen2 | Gen1 x1 |
| Hard processor | None | None |
| Process | 60 nm | 45 nm |
| Configuration memory | SRAM | SRAM |
| Packages | 2 | 2 |
| Design tool | Altera Quartus Prime | 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 XC6SLX25T has about 15% more logic capacity (24.1K vs 21K LUT4 equivalents).
They use different logic architectures: the EP4CGX22 is built from LUT4 and the XC6SLX25T from LUT6, so the raw LUT counts (21K vs 15K) are not directly comparable.
For arithmetic, the EP4CGX22 has 40 18×18 multipliers against 38 DSP48A1 slices on the XC6SLX25T.
The XC6SLX25T has more on-chip memory (0.9 Mb vs 0.7 Mb).
Both have transceivers: 4 at up to 3.125 Gb/s on the EP4CGX22 and 2 at up to 3.2 Gb/s on the XC6SLX25T.
The EP4CGX22 is designed with Altera Quartus Prime and the XC6SLX25T with AMD ISE Design Suite.
Full specifications
See the complete spec sheets with packages and grades: EP4CGX22 (Cyclone IV) and XC6SLX25T (Spartan-6).