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Adders

47 builds compete: 8-bit vertical adders of every design.

Fastest

And 37 more.

Smallest

#BuildVolumeLatency
18-bit Ripple Carry Adder
8 copies of a 1-bit build, stacked
384 blocks per copy18 ticks
28-bit Carry Cancel Adder630 blocks3 ticks
28-bit Carry Cancel Adder630 blocks3 ticks
28-bit Carry Cancel Adder630 blocks3 ticks
58-bit Carry Cancel Adder648 blocks3 ticks
58-bit Carry Cancel Adder648 blocks3 ticks
78-bit Carry Cancel Adder665 blocks3 ticks
88-bit Carry Cancel Adder684 blocks3 ticks
98-bit Carry Cancel Adder714 blocks3 ticks
108-bit Carry Cancel Adder720 blocks3 ticks

And 37 more.

Most compact at each latency

Each is smaller than every build at least as fast, so going slower buys space.

BuildLatencyVolume
8-bit Carry Cancel Adder3 ticks630 blocks
8-bit Ripple Carry Adder
8 copies of a 1-bit build, stacked
18 ticks384 blocks per copy