FPGA & adaptive SoC databook · online editionRev. 2026.10

EP4SGX530 vs XC6VLX550T

A comparison of the Altera Stratix IV EP4SGX530 and the AMD Virtex-6 XC6VLX550T using the data from both vendors' selection guides.

Side-by-side specifications

EP4SGX530XC6VLX550T
Vendor / familyAltera Stratix IVAMD Virtex-6
LUTs as published212,480 ALMs343,680 LUT6
LUT typeadaptive logic module: fracturable 8-input LUT (one 6-input or two independent 4-input functions)6-input look-up table, fracturable into two LUT5 with shared inputs
LUT4 equivalent (approx.)≈424,960≈549,888
CoreScore (SERV cores)——
Vendor logic figure531,000 LE549,888 LC
DSP1,024 18×18 multipliers864 DSP48E1 slices
Block RAM20.2 Mb22.2 Mb
Large RAM——
Max. user I/O9041,200
Transceivers32 × XCVR 8.5 Gb/s, 16 × XCVR 6.5 Gb/s36 × GTX 6.6 Gb/s
Hard PCI ExpressGen2Gen2 x8
Hard processorNoneNone
Process40 nm40 nm
Configuration memorySRAMSRAM
Packages42
Design toolAltera Quartus PrimeAMD ISE Design Suite

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

The XC6VLX550T has about 29% more logic capacity (550K vs 425K LUT4 equivalents).

They use different logic architectures: the EP4SGX530 is built from ALMs and the XC6VLX550T from LUT6, so the raw LUT counts (212K vs 344K) are not directly comparable.

For arithmetic, the EP4SGX530 has 1,024 18×18 multipliers against 864 DSP48E1 slices on the XC6VLX550T.

Both have transceivers: 48 at up to 8.5 Gb/s on the EP4SGX530 and 36 at up to 6.6 Gb/s on the XC6VLX550T.

The EP4SGX530 is designed with Altera Quartus Prime and the XC6VLX550T with AMD ISE Design Suite.

Full specifications

See the complete spec sheets with packages and grades: EP4SGX530 (Stratix IV) and XC6VLX550T (Virtex-6).