  The ILD, International Large Detector, is one of the detector concepts for a
future linear collider. Its performance is investigated using Monte-Carlo full
simulation and PandoraPFA. Among several options, a combination of the
silicon-tungsten electromagnetic calorimeter (SiW ECAL) and the semi-digital
hadronic calorimeter (sDHCAL) presenting the highest granularity calorimeters,
is here investigated. It is shown that by reducing the radius and length of the
entire detector by a factor of $\sim1.3$ with respect to the baseline
dimensions, the jet energy resolution is degraded by 8 to 19% in the range of
45 and 250 GeV. The price of ILD which scales roughly quadratically with the
ILD dimensions may be reduced by a factor of nearly two. A similar study made
with the SiW ECAL and the analog hadronic calorimeter (AHCAL) shows that for an
inner radius of ECAL of about~1.4 m, the performance is comparable between
sDHCAL and AHCAL.
