FPGA	Arria II GX	Stratix III	Stratix IV GX	Stratix IV GX	Stratix V
Logic Elements	124,100 – 256,000	142,000 – 338,000	228,000 – 531,200	228,000 – 531,200	622,000
DDR2	SO-DIMM Module	SO-DIMM Module	2 x SO-DIMM Module
DDR3	128MB (DDR3)			SO-DIMM Module	2 DDR3 SO-DIMM Module
FLASH	64MB		64MB	64MB	256MB
SRAM	2MB (SSRAM)		2MB	2MB	32MB QDRII+ SRAM
SD Card Slot
SATA			4		4 x SATA3.0
Switches	4 (DIP)	4	4	4	4
LEDs	4	8	8	4	10
Pushbuttons	2	4	4	4	4
7-segment		2	2		2
RS-232
Expansion Pins		2 x 40 pin	2 x 40 pin	2 x 40 pin
HSMC Ports	1-2		2	6
HSTC Ports		4
Transceiver Channels	8 - 16		12	16	RS422
PCIe	x 8 (Gen1)		x 8 (Gen2)	Two x4 (Gen 2)	x8 (Gen 3)
USB-Blaster	Built-in	Built-in	Built-in	Built-in	Built-in
Ethernet	10/100/1000		4 x 10/100/1000
USB 2.0
Additional Features	-	Stackable Design	-	Stackable Design