FPGA & adaptive SoC databook · online editionRev. 2026.10

XC6VHX255T

AMDVirtex-6

The XC6VHX255T is a Virtex-6 FPGA from AMD, built on a 40 nm process. It provides 158,400 LUT6 look-up tables (253,440 logic cells), 316,800 flip-flops, 18.1 Mb of block RAM and 576 DSP48E1 slices. It offers up to 480 user I/O pins and 48 GTX/GTH transceivers at up to 11.18 Gb/s, with hard PCI Express Gen2 x8 blocks. It is available in 2 packages, from the FFG1155 (35 × 35 mm) to the FFG1923 (45 × 45 mm). Temperature grades: commercial, extended, industrial. Designs are built with AMD ISE Design Suite.

158,400LUTs (LUT6)
576DSP48E1 slices
18.1 MbBlock RAM
480Max. user I/O
48Transceivers (11.18 Gb/s)

Specifications

VendorAMD
FamilyVirtex-6
Series6 Series
Process40 nm
Configuration memorySRAM
Look-up tables (LUT6)158,400
   Logic block6-input look-up table, fracturable into two LUT5 with shared inputs
LUT4 equivalent (approx.)≈253,440
Logic cells253,440
Flip-flops316,800
Distributed RAM3,050 Kb
Block RAM18.1 Mb (516 × 36 Kb)
DSP (DSP48E1 slice)576
Clock management tiles12
Max. user I/O480
GTX transceivers24 × 6.6 Gb/s
GTH transceivers24 × 11.18 Gb/s
PCI Express2× Gen2 x8
Analog / monitorSystem Monitor
Design toolAMD ISE Design Suite

Packages

PackageSize (mm)Pitch (mm)User I/OTransceivers
FFG115535 × 351.044036
FFG192345 × 451.048048

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

Speed and temperature grades

Temperature gradeJunction rangeSpeed grades
Commercial (C)0 to 85 °C-3, -2, -1
Extended (E)0 to 100 °C-2
Industrial (I)−40 to 100 °C-2, -1

Alternatives to the XC6VHX255T

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

DeviceLUTsVendor logicDSPBlock RAMMax I/OTransceiversPCIeCoreScore
EP4S100G3Altera Stratix IV116,480 ALMs291K LE83213.3 Mb76948 XCVR/XCVR/XCVR 11.3 Gb/sGen2—
EP4SGX290Altera Stratix IV116,480 ALMs291K LE83213.3 Mb90448 XCVR/XCVR 8.5 Gb/sGen2—
5SGSD3Altera Stratix V89,000 ALMs236K LE60013.4 Mb43224 GX 14.1 Gb/sGen3—
10AX027Altera Arria 10101,620 ALMs354K LE83014.7 Mb38424 XCVR 17.4 Gb/sGen3—
EP4S100G4Altera Stratix IV141,440 ALMs354K LE1,02417.7 Mb76948 XCVR/XCVR/XCVR 11.3 Gb/sGen2—
GX 400Altera Stratix 10 GX/SX128,160 ALMs378K LE64830 Mb37424 XCVR/XCVR 28.3 Gb/sGen3—

Compare side by side: XC6VHX255T vs EP4S100G3, XC6VHX255T vs EP4SGX290, XC6VHX255T vs 5SGSD3, XC6VHX255T vs GX 400.

Compare the XC6VHX255T with up to three other FPGAs.

XC6VHX255T quick facts

How many LUTs does the XC6VHX255T have?

The XC6VHX255T has 158,400 LUT6 look-up tables (253,440 logic cells as published by AMD). Logic block: 6-input look-up table, fracturable into two LUT5 with shared inputs.

How many DSP blocks does the XC6VHX255T have?

The XC6VHX255T has 576 DSP48E1 slices and 18.1 Mb of block RAM.

Does the XC6VHX255T have transceivers?

Yes, 48 GTX/GTH transceivers at up to 11.18 Gb/s.

What are the alternatives to the XC6VHX255T?

Devices of similar size in other families include EP4S100G3 (Altera Stratix IV), EP4SGX290 (Altera Stratix IV), 5SGSD3 (Altera Stratix V).

Which software is used to design with the XC6VHX255T?

Designs for the XC6VHX255T are built with AMD ISE Design Suite.

Other Virtex-6 devices

DeviceLUTsVendor logicDSPBlock RAMMax I/OTransceiversPCIeCoreScore
XC6VLX75T46,560 LUT674.5K LC2885.5 Mb36012 GTX 6.6 Gb/sGen2—
XC6VLX130T80,000 LUT6128K LC4809.3 Mb60020 GTX 6.6 Gb/sGen2—
XC6VLX195T124,800 LUT6200K LC64012.1 Mb60020 GTX 6.6 Gb/sGen2—
XC6VLX240T150,720 LUT6241K LC76814.6 Mb72024 GTX 6.6 Gb/sGen2—
XC6VHX250T157,440 LUT6252K LC57617.7 Mb32048 GTX 6.6 Gb/sGen2—
XC6VHX255T158,400 LUT6253K LC57618.1 Mb48048 GTX/GTH 11.18 Gb/sGen2—
XC6VSX315T196,800 LUT6315K LC1,34424.8 Mb72024 GTX 6.6 Gb/sGen2—
XC6VLX365T227,520 LUT6364K LC57614.6 Mb72024 GTX 6.6 Gb/sGen2—
XC6VHX380T239,040 LUT6382K LC86427 Mb72072 GTX/GTH 11.18 Gb/sGen2—
XC6VSX475T297,600 LUT6476K LC2,01637.4 Mb84036 GTX 6.6 Gb/sGen2—
XC6VLX550T343,680 LUT6550K LC86422.2 Mb1,20036 GTX 6.6 Gb/sGen2—
XC6VHX565T354,240 LUT6567K LC86432.1 Mb72072 GTX/GTH 11.18 Gb/sGen2—
XC6VLX760474,240 LUT6759K LC86425.3 Mb1,200———

Source: Virtex-6 Family Overview, DS150 (v2.5). Data is extracted automatically from the vendor's selection guide; verify critical values in the device data sheet.