GX 650

AlteraStratix 10 GX/SXSoC

The GX 650 is a Stratix 10 GX/SX FPGA from Altera, built on a 14 nm process. It provides 207,360 adaptive logic modules (ALMs) (612,000 logic elements (LEs)), about 414,720 LUT4 equivalents, 49 Mb of block RAM and 1,152 variable-precision DSP blocks. It offers up to 392 user I/O pins and 24 XCVR/XCVR transceivers at up to 28.3 Gb/s, with hard PCI Express Gen3 x16 blocks. It comes in a single package, the F1152 (35 × 35 mm). Designs are built with Altera Quartus Prime.

415KLUT4-equivalent

207KALMs

1,152variable-precision DSP blocks

49 MbBlock RAM

392Max. user I/O

24Transceivers (28.3 Gb/s)

Specifications

Vendor	Altera
Family	Stratix 10 GX/SX
Series	Stratix
Process	14 nm
Configuration memory	SRAM
LUT4-equivalent capacity	414,720
Adaptive logic modules (ALMs)	207,360
LUT note	Adaptive logic modules (ALMs): fracturable 8-input LUTs; each ALM can implement two 4-input functions
Logic elements (LEs)	612,000
Distributed RAM	3,072 Kb
Block RAM	49 Mb (2489 × 20 Kb)
DSP (variable-precision DSP block)	1,152

Max. user I/O	392
XCVR transceivers	16 × 28.3 Gb/s
XCVR transceivers	8 × 17.4 Gb/s
PCI Express	Gen3 x16
Analog / monitor	None
Design tool	Altera Quartus Prime

Packages

Package	Size (mm)	Pitch (mm)	User I/O	Transceivers
F1152	35 × 35	1.0	392	24

Package names are shown as in the selection guide; the full ordering code adds speed grade and temperature (see the data sheet).

Alternatives to the GX 650

Closest matches in other families and vendors by logic, DSP, memory, I/O and transceivers. Check pin compatibility and tools before migrating.

Device	LUT4-eq.	Vendor logic	DSP	Block RAM	Max I/O	Transceivers	PCIe
XC2KU050PAMD Kintex UltraScale+ Gen 2	360K 225K LUT6	491K SLC	1,872	17.7 Mb	516	24 GTY 32.75 Gb/s	Gen4
XC2KU040PAMD Kintex UltraScale+ Gen 2	299K 187K LUT6	410K SLC	1,560	14.8 Mb	474	16 GTY 32.75 Gb/s	Gen4
LAV-AT-G70Lattice Avant-G	397K 397K LUT4	637K LC	1,800	35.6 Mb	554	28 SERDES 12.5 Gb/s	—
LAV-AT-X70Lattice Avant-X	397K 397K LUT4	637K LC	1,800	35.6 Mb	554	28 SERDES 25 Gb/s	—
MPF500TMicrochip PolarFire	481K 481K LUT4	481K LE	1,480	29.7 Mb	584	24 SERDES 12.7 Gb/s	Gen2
10AX048Altera Arria 10	364K 182K ALMs	629K LE	1,368	28.1 Mb	492	36 XCVR 17.4 Gb/s	Gen3

Compare side by side: GX 650 vs XC2KU050P, GX 650 vs XC2KU040P, GX 650 vs LAV-AT-G70.

GX 650 quick facts

How many LUTs does the GX 650 have?

The GX 650 has 207,360 adaptive logic modules (ALMs), about 414,720 LUT4 equivalents (612,000 logic elements (les) as published by Altera).

How many DSP blocks does the GX 650 have?

The GX 650 has 1,152 variable-precision DSP blocks and 49 Mb of block RAM.

Does the GX 650 have transceivers?

Yes, 24 XCVR/XCVR transceivers at up to 28.3 Gb/s.

What are the alternatives to the GX 650?

Devices of similar size in other families include XC2KU050P (AMD Kintex UltraScale+ Gen 2), XC2KU040P (AMD Kintex UltraScale+ Gen 2), LAV-AT-G70 (Lattice Avant-G).

Which software is used to design with the GX 650?

Designs for the GX 650 are built with Altera Quartus Prime.

Other Stratix 10 GX/SX devices

Device	LUT4-eq.	Vendor logic	DSP	Block RAM	Max I/O	Transceivers	PCIe
GX 400	256K 128K ALMs	378K LE	648	30 Mb	374	24 XCVR/XCVR 28.3 Gb/s	Gen3
SX 400	256K 128K ALMs	378K LE	648	30 Mb	374	24 XCVR/XCVR 28.3 Gb/s	Gen3
GX 650	415K 207K ALMs	612K LE	1,152	49 Mb	392	24 XCVR/XCVR 28.3 Gb/s	Gen3
SX 650	415K 207K ALMs	612K LE	1,152	49 Mb	392	24 XCVR/XCVR 28.3 Gb/s	Gen3
GX 850	570K 285K ALMs	841K LE	2,016	68 Mb	688	48 XCVR/XCVR 28.3 Gb/s	Gen3
SX 850	570K 285K ALMs	841K LE	2,016	68 Mb	688	48 XCVR/XCVR 28.3 Gb/s	Gen3
GX 1100	899K 449K ALMs	1325K LE	2,592	107 Mb	688	48 XCVR/XCVR 28.3 Gb/s	Gen3
SX 1100	899K 449K ALMs	1325K LE	2,592	107 Mb	688	48 XCVR/XCVR 28.3 Gb/s	Gen3
GX 1650	1101K 551K ALMs	1624K LE	3,145	114 Mb	704	96 XCVR/XCVR 28.3 Gb/s	Gen3
SX 1650	1101K 551K ALMs	1624K LE	3,145	114 Mb	704	96 XCVR/XCVR 28.3 Gb/s	Gen3
GX 2100	1359K 680K ALMs	2005K LE	3,744	127 Mb	704	96 XCVR/XCVR 28.3 Gb/s	Gen3
SX 2100	1359K 680K ALMs	2005K LE	3,744	127 Mb	704	96 XCVR/XCVR 28.3 Gb/s	Gen3
GX 2500	1642K 821K ALMs	2422K LE	5,011	195 Mb	1,160	96 XCVR/XCVR 28.3 Gb/s	Gen3
SX 2500	1642K 821K ALMs	2422K LE	5,011	195 Mb	1,160	96 XCVR/XCVR 28.3 Gb/s	Gen3
GX 2800	1866K 933K ALMs	2753K LE	5,760	229 Mb	1,160	96 XCVR/XCVR 28.3 Gb/s	Gen3
SX 2800	1866K 933K ALMs	2753K LE	5,760	229 Mb	1,160	96 XCVR/XCVR 28.3 Gb/s	Gen3

Source: Altera Stratix 10 GX/SX FPGA Product Table, 2025.09.23. Data is extracted automatically from the vendor's selection guide; verify critical values in the device data sheet.