In somewhat similar test, it took almost 11.5 million writes over 3 weeks to burn though 2401 EEPROM chip. [1]<p>SD card case is both simpler: no need for custom hardware, and at the same time harder: there is flash translation layer [2] between RPi and actual flash erase-blocks, so write patterns, block size, etc. <i>do</i> affect lifetime.<p>[1] <a href="http:&#x2F;&#x2F;dangerousprototypes.com&#x2F;2010&#x2F;05&#x2F;25&#x2F;prototype-flash_destroyer&#x2F;" rel="nofollow">http:&#x2F;&#x2F;dangerousprototypes.com&#x2F;2010&#x2F;05&#x2F;25&#x2F;prototype-flash_de...</a><p>[2] <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Wear_leveling" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Wear_leveling</a>