How good is my gaming PC?

[Dino Dub]

I'd like to hear your opinion on the following config:
CPU: Intel Core i5-2500k @4.2GHz (TurboBoost + a bit of overclock)
MB: ASUS P8Z77-M
RAM: x1 Fury HyperX 8GB DDR3 1866MHz
GPU: SAPPHIRE R9 280X VAPOR-X DUAL-X 3GDD5 384BIT
PSU: ThermalTake SmartSE 630W+ SemiModular
CASE: ThermalTake ARMOR MX+
SSD: SAMSUNG 250GB EVO850 SATA3 (OS + few games)
HDDs: SEAGATE 2TB 7200.12 ST2000DM001 SATA3 + SEAGATE 320GB SATA2
OS: Windows 7 SP1 Ultimate x64

How much future-proof is it and how well you think it will run games coming out in 2016.?
What titles would bottleneck my GPU? At what point would you recommend upgrade of it?