SEOUL, Jan 8 (Reuters) - Samsung Electronics ( SSNLF )

estimated on Wednesday a 131% jump in fourth-quarter operating

profit from a year earlier but missed analyst estimates by a

large margin as it lagged behind rival SK Hynix ( HXSCF ) in

supplying high-end chips to Nvidia ( NVDA ).

The world's largest memory chip, smartphone and TV maker

estimated an operating profit of 6.5 trillion won ($4.47

billion) for the three months ended Dec. 31, versus a 7.7

trillion won LSEG SmartEstimate.

Samsung said in a statement on Wednesday that its chip

earnings were hurt by slowing demand for PCs and mobile phones,

as well as rising research and development costs and investments

in manufacturing capacity for advanced chip processes.

($1 = 1,454.6000 won)