| style="text-align:right;" | 17 [https://en.wikipedia.org/wiki/Terabyte TB]
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The additional use of [https://en.wikipedia.org/wiki/Haswell_%28microarchitecture%29 Haswell's] [[BMI2]] [[BMI2#PDEP|Parallel Bits Deposit (PDEP)]] and [[BMI2#PEXT|Parallel Bits Extract (PEXT)]] instructions, or their slower serial implementations, allows further size reduction <ref>[http://www.talkchess.com/forum/viewtopic.php?t=48220&start=1 Re: PEXT Bitboards] by [[Ronald de Man]], [[CCC]], June 07, 2013</ref> .
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