Shirley the 8 pin connector is for the CPU and the 6 pin supply is for a graphics card. At least that's what I thought but Google suggests that some boards use the 6 pin connector for a CPU as well. My mobo (Gigabyte Z97x plus some letters and numbers) has an 8 pin connector. The CPU is an i5 Haswell chewing through 88W.
Linustechtips.com tells me that a 4 pin connection supports 155 watts and is intended for CPUs with low to mid-range greediness. An 8 pin connection supports 235 watts and is intended for hobs, room-heaters and the like. You should be absolutely fine.
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