SX 650 vs Ti660
A comparison of the Altera Stratix 10 GX/SX SX 650 and the Efinix Titanium Ti660 using the data from both vendors' selection guides.
Side-by-side specifications
| SX 650 | Ti660 | |
|---|---|---|
| Vendor / family | Altera Stratix 10 GX/SX | Efinix Titanium |
| Logic (LUT4-equivalent) | 414,720 | 656,916 |
| LUTs as published | 207,360 ALMs | — LUT4 |
| Vendor logic figure | 612,000 LE | 656,916 LE |
| DSP | 1,152 variable-precision DSP blocks | 1,260 DSP blocks |
| Block RAM | 49 Mb | 38.9 Mb |
| Large RAM | — | — |
| Max. user I/O | 392 | 480 |
| Transceivers | 16 × XCVR 28.3 Gb/s, 8 × XCVR 17.4 Gb/s | 24 × SERDES 25.8 Gb/s |
| Hard PCI Express | Gen3 x16 | Gen4 x8 |
| Hard processor | 4× Arm Cortex-A53 | 4× RISC-V RV64 |
| Process | 14 nm | 16 nm |
| Configuration memory | SRAM | SRAM |
| Packages | 1 | 2 |
| Design tool | Altera Quartus Prime | Efinix Efinity |
Highlighted values are higher. Logic is compared in LUT4 equivalents; see how FPGA vendors count logic.
Key differences
The Ti660 has about 58% more logic capacity (657K vs 415K LUT4 equivalents).
They use different logic architectures: the SX 650 is built from ALMs and the Ti660 from LUT4, so the raw LUT counts (207K vs —) are not directly comparable.
For arithmetic, the Ti660 has 1,260 DSP blocks against 1,152 variable-precision DSP blocks on the SX 650.
The SX 650 has more on-chip memory (49 Mb vs 38.9 Mb).
Both have transceivers: 24 at up to 28.3 Gb/s on the SX 650 and 24 at up to 25.8 Gb/s on the Ti660.
The SX 650 is designed with Altera Quartus Prime and the Ti660 with Efinix Efinity.
Full specifications
See the complete spec sheets with packages and grades: SX 650 (Stratix 10 GX/SX) and Ti660 (Titanium).