title: Relation between LUTs, logic cell, logic elements, system gates
body: <p>My question is related to difference and relationship between these terminology:</p>
  
  <ul>
  <li>LUTs</li>
  <li>Logic Cell</li>
  <li>Logic Elements(LE)</li>
  <li>System Gates</li>
  </ul>
  
  <p>I know that a lot depends on FPGA producer, but for example an FPGA vendor that state of one of it's products this: FPGA with 100.000 System Gates equivalent aprox. to 1.5k LE.</p>
  
  <p>How I can relate this statement with equivalent FPGA vendor that use LUTs and Logic Cells?</p>
  
  <p>I ask this question becouse I want to migrate some project from an FPGA that tell me System Gates number and LE to an FPGA that tell me it's LUTs number.</p>