Question How much difference does clock speed make in the same gpu?

Feb 5, 2019
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The graphics card I am talking about in particular is the RTX 2060.

Zotac sells two variants of the card, the Twin Fan and AMP Edition.

The Twin Fan comes with an engine clock boost of 1680MHz

The AMP Edition comes with an engine clock boost of 1800MHz

Is the slightly higher clock speed something worth paying a little extra for in terms of gaming performance? If it is just going to be like 2-5fps increase then I don't think I'll get it. Also, will I be able to overclock the twin fan to 1800 in the future or is the listed speed like the max overclockability or something (I don't know anything about overclocking, sorry)? Thanks for helping out. :)