not sure if my cpu is holding back my card or the other way around

wss_003

Honorable
Jan 13, 2014
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Hey my intentions are not to game on this pc...yet, but i have a home office build running an a6-7400k along with an msi a78m-e35 mobo and a 500 watt evga psu i had origninally had 4 gigs of 1333 ram in it but happend to buy a few other pc for parts and got a 16gig kit of 2400 ram so i put 8 gigs in the office pc and 8 in a diffrent gaming rig im building for a friend. I also got 2 280x cards and a 7850 so just because I had it laying here i decided to expariment and throw it in the a6 office pc and run heaven bench just to see what it would do and had planed to switch to a 760k as I may be getting one in another part out im buying. My issue is im haveing is when i run the benchmark my cpu core usage never gets over 70% I am not very well versed graphics cards outside of the r9 series and the 7xx series so is this normal i just assumed with such a week cpu it would hold back the card not the other way around