You will be fine with the Corsair 430CX, manufacturers have to state much more than the system actually needs to accommodate all systems including those with very power hungry CPUs, and to help compensate for POS PSUs like that hec.
Important thing to know about modern computers, since the era of the Pentium 4 80% of a computers power has been drawn from the 12 V rail of the PSU, the CPU and GPU are both powered directly from that source. The hec unit you linked has a single 12 V source capable of providing up to 18 A(216 W) which is absolutely pathetic for a unit that claims to be able to do over 500W, the problem is that unit is a design from before the P4 era when the CPU was still fed from the 5 V rail, it is also rated at peak power(what it can do for a very very short amount of time), not what it can sustain for a long time which makes it seem more powerful when it is actually far weaker for a modern system's needs.
The 430CX has a single 12 V rail rated for up to 28 A(336 W) making it significantly more powerful than the "585W" unit from hec, primarily because it is rated for 430 W of continuous power output and can sustain that at high temperatures and for a long time.
The 430 CX will power your system just fine, the hec is likely to be under powered and fail within 2 years.