Computer performance by orders of magnitude


This list compares various amounts of computing power in instructions per second organized by order of magnitude in FLOPS.
Scientific E notation index: 2 | 3 | 6 | 9 | 12 | 15 | 18 | 21 | 24 | >24


Milliscale computing (10−3)

  • 2×10−3: average human multiplication of two 10-digit numbers using pen and paper without aids

Deciscale computing (10−1)

  • 1×10−1: multiplication of two 10-digit numbers by a 1940s electromechanical desk calculator
  • 3×10−1: multiplication on Zuse Z3 and Z4, first programmable digital computers, 1941 and 1945 respectively
  • 5×10−1: computing power of the average human mental calculation for multiplication using pen and paper

Scale computing (100)

  • 1.[|2] OP/S: addition on Z3, 1941, and multiplication on Bell Model V, 1946
  • 2.4 OP/S: addition on Z4, 1945

Decascale computing (101)

Hectoscale computing (102)

Kiloscale computing (103)

Megascale computing (10[|6])

Gigascale computing (109)

Terascale computing (1012)


Petascale computing (1015)


Exascale computing (1018)


Zettascale computing (1021)

  • 1×1021: Accurate global weather estimation on the scale of approximately 2 weeks. Assuming Moore's law remains applicable, such systems may be feasible around 2035.
A zettascale computer system could generate more single floating point data in one second than was stored by any digital means on Earth in the first quarter of 2011.

Beyond zettascale computing (>1021)