FPGA & adaptive SoC databook · online editionRev. 2026.10

GX 400 vs LAV-AT-X50

A comparison of the Altera Stratix 10 GX/SX GX 400 and the Lattice Avant-X LAV-AT-X50 using the data from both vendors' selection guides.

Side-by-side specifications

GX 400LAV-AT-X50
Vendor / familyAltera Stratix 10 GX/SXLattice Avant-X
Logic (LUT4-equivalent)256,320255,000
LUTs as published128,160 ALMs255,000 LUT4
Vendor logic figure378,000 LE409,000 LC
DSP648 variable-precision DSP blocks1,120 18×18 multipliers
Block RAM30 Mb22.7 Mb
Large RAM——
Max. user I/O374298
Transceivers16 × XCVR 28.3 Gb/s, 8 × XCVR 17.4 Gb/s16 × SERDES 25 Gb/s
Hard PCI ExpressGen3 x16None
Hard processorNoneNone
Process14 nm16 nm
Configuration memorySRAMSRAM
Packages11
Design toolAltera Quartus PrimeLattice Radiant

Highlighted values are higher. Logic is compared in LUT4 equivalents; see how FPGA vendors count logic.

Key differences

Both devices offer similar logic capacity: 256K and 255K LUT4 equivalents.

They use different logic architectures: the GX 400 is built from ALMs and the LAV-AT-X50 from LUT4, so the raw LUT counts (128K vs 255K) are not directly comparable.

For arithmetic, the LAV-AT-X50 has 1,120 18×18 multipliers against 648 variable-precision DSP blocks on the GX 400.

The GX 400 has more on-chip memory (30 Mb vs 22.7 Mb).

Both have transceivers: 24 at up to 28.3 Gb/s on the GX 400 and 16 at up to 25 Gb/s on the LAV-AT-X50.

The GX 400 is designed with Altera Quartus Prime and the LAV-AT-X50 with Lattice Radiant.

Full specifications

See the complete spec sheets with packages and grades: GX 400 (Stratix 10 GX/SX) and LAV-AT-X50 (Avant-X).