Equivalence between "XtremeDSP48 slice" and "slices of programmable logic"

programmable logic, consumes 1/10th the power of an equivalent logic implementation".

Hi, the V4 silicon may use a different technology, but basically the same rule applies. A DSP48 consists of a multiplier and some adders,muxes and registers. All of this is made as a real hardmacro, so almost no power for configuration and storage elements is wasted like what is needed in LUTs.(Just a few MUX config bits to bypass registers etc..) The number of V4 Slices to create some DSP48 alike design will probably be higher, since V$ Luts have only four inputs, while V5 LUTS have six.

More accurate information may be derived from the V4 datasheets, or open a thread in the forums at xilinx if no satisfying answer appears here.

Have a nice synthesis Eilert

Thank you backhus for the quick answer.

programmable logic, consumes 1/10th the power of an equivalent logic implementation".

Those numbers are in the category of "marketing b**ll*x", and should not be relied upon for any serious purpose.

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