FPGA & adaptive SoC databook · online editionRev. 2026.10

SX 400 vs TX 400

A comparison of the Altera Stratix 10 GX/SX SX 400 and the Altera Stratix 10 TX TX 400 using the data from both vendors' selection guides.

Side-by-side specifications

SX 400TX 400
Vendor / familyAltera Stratix 10 GX/SXAltera Stratix 10 TX
LUTs as published128,160 ALMs128,160 ALMs
LUT typeadaptive logic module: fracturable 8-input LUT (one 6-input or two independent 4-input functions)adaptive logic module: fracturable 8-input LUT (one 6-input or two independent 4-input functions)
LUT4 equivalent (approx.)≈256,320≈256,320
CoreScore (SERV cores)——
Vendor logic figure378,000 LE378,000 LE
DSP648 variable-precision DSP blocks648 variable-precision DSP blocks
Block RAM30 Mb30 Mb
Large RAM——
Max. user I/O374384
Transceivers16 × XCVR 28.3 Gb/s, 8 × XCVR 17.4 Gb/s24 × GXE 57.8 Gb/s
Hard PCI ExpressGen3 x16None
Hard processor4× Arm Cortex-A534× Arm Cortex-A53 (optional)
Process14 nm14 nm
Configuration memorySRAMSRAM
Packages11
Design toolAltera Quartus PrimeAltera Quartus Prime

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

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

Both have transceivers: 24 at up to 28.3 Gb/s on the SX 400 and 24 at up to 57.8 Gb/s on the TX 400.

The SX 400 is designed with Altera Quartus Prime and the TX 400 with Altera Quartus Prime.

Full specifications

See the complete spec sheets with packages and grades: SX 400 (Stratix 10 GX/SX) and TX 400 (Stratix 10 TX).