Table 4. Resource utilisation per cell for various energy functions.

Energy function	Number of correlations	Cell operation	Resources used
			ALUTs	Registers	DSPs
SC (2 bits)	1	bitwise AND	15	17	0
SC + desolvation (ZDOCK)	2	bitwise operations	50	41	0
SC + electrostatics (FTDock, DOT)	2	bitwise ops + one multiplication	32	74	1
PIPER energy function w/o pairwise potential	4	bitwise ops + two multiplications	59	97	2
PIPER energy function w/two pairwise potentials	6	bitwise ops + four multiplications	93	109	4
PIPER energy function w/four pairwise potential	8	bitwise ops + six multiplications	127	157	6