can i pair an intel i5-3570k with Sapphire R9 270x Toxic 2GB GDDR5 ? will there be a bottlenecking on this build ?
The 3570k can handle any video card out there, so you have nothing to worry about there. But like logainofhades said, you should go for the 4670k with a z87 motherboard instead. Newer generation and I would think pretty similar pricing.