The CPU MEM and MB are doing fine, It does have a SSD, so you can't tell it is 10 year old CPU. Computer does not locks up or hesitate; it just 130 watts TDP versus 50 Watts TDP.
I am leaning toward i3-6100 due to its price and AsRock Z170 Pro4.
The SSD is far more important than whatever you're using for a CPU.
I'm still using a qx9650, but i'm thinking of upgrading to a core i7 because the the c2q can't handle 4k video streaming on youtube.
Really? My Q9300 @ 2.85Ghz (slight OC), and 8GB DDR2-800, SSD, and a Radeon 260X 2GB GDDR5 card, can play back 4K60 vids on YouTube just fine, on a 1920x1080 LCD, running in 2560x1440 VSR mode.
Edit: Not using Flash Player though.
really? maybe its the video card. I have a quadro fx1700. it has a low wei score in windows 7. 4.9 for graphics and 5.9 for gaming graphics.