How many DSP in a FPGA?

There’s no single fixed number — it totally depends on the specific FPGA device and family.

Think of it like this:

1. What is a “DSP” in an FPGA?

When people say “how many DSPs,” they usually mean DSP blocks / DSP slices:
hard-wired multiplier-accumulator blocks used for:

• FIR/IIR filters
• FFTs
• Motor control / servo loops
• Video / image processing
• AI / ML MACs

They’re separate from LUTs and flip-flops.

2. Typical ranges (rule of thumb)

Very rough ballpark per device:

Tiny / low-end FPGAs:

0–20 DSPs (some small Lattice iCE40/CoolRunner/low Spartan, etc.)

Mid-range FPGAs (Artix-7, Cyclone, etc.):

• a few dozen up to a few hundred DSPs
• e.g. an Artix-7 XC7A35T has 90 DSP48A1 slices; an XC7A200T has 740.

High-end / signal-processing FPGAs (Kintex, Virtex, Stratix, etc.):

several hundred to a couple thousand DSPs

FPGA SoCs & modern “AI-leaning” families:

can go into the thousands of DSP blocks on a single chip.

(Exact numbers change per part number, speed grade, and vendor.)

3. How to find the DSP count for your FPGA

1. Get the exact part number – e.g. XC7A100T-1CSG324 or 10CL025YU256.
2. Open the datasheet / “device overview” / “product table” for that family.
3. Look for a table with columns like:

• “Logic Cells / LUTs”
• “BRAM (Kb)”
• “DSP slices / DSP blocks / DSP blocks (18x25)”

Vendors usually have a nice summary table that lists DSP count for each device in the family.

4. Quick mental model

If you only know family but not device, just think:

• Small board / cheap dev kit → tens of DSPs
• Serious mid-range dev kit → 100–500 DSPs
• Big expensive board (Virtex/Stratix class) → 500–2000+ DSPs