GTX960 in a PCI-E 1.0 x16 slot? Bottlenecked? (+ i5 vs FX6300)

Atuleon

Gold Level Poster
HI,

Is a GTX960 in a PCI-E 1.0 x16 slot bottlenecked much, (I hear just a couple of percent)? Which would be the better option out of the below

OPTION 1 (PCI-E 2.00 x16)
GTX960 in PCI-E 2.00 x16 and AMD FX-6300 Six Core CPU (3.50GHz/8MB CACHE/AM3+)

OPTION 2 (PCI-E 1.00 x16)
GTX960 in PCI-E 1.00 x16 and Intel® Core™i5 Quad Core Processor i5-4460 (3.2GHz) 6MB Cache
 
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