Will PCIe 3.0 cards work on PCIe revision 2.0 slots?

cozygamer475

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Sep 2, 2017
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I'm going to buy a gt 1030.So it says it is a PCie 3.0 card. Will it work on my PCIe 2.0 slot on the motherboard.(and even if it does,will there be performance loss)

current system:-
Intel® Pentium® Processor G3260
ga gigabyte 81m motherboard
sapphire r5 230
trancend 4gb*2 ddr3 1333mhz ram
corsair cx 430