Well, that's part of it - my personal understanding of how slow a C2D is compared to modern CPUs.
There was a performance complaint made by my friend, that the machine is too slow for watching Twitch.tv streams.
That's probably due to Flash Player, but my friend recently informed me that on his personal machine, they switched to HTML5 player, so he can watch 1080P streams full-screen again, without performance problems.
I guess I was just thinking how cheap it would be to drop in a C2Q, which I've admittedly already spent $15 on from ebay.
I also agree that it's past time to put in an SSD, the 500GB HDD is 5 years old.
Well, I'm going to re-visit this thread. Friend once again complained, when visiting his GF's place, that her PC was too slow for watching Twitch.tv streams.
In fact, he couldn't at all, until I had him install Flash Player (Netscape edition) on the PC.
Anyways, probably not too long after this thread, initially, I donated parts for my friend to build an FM1 APU rig, with 8GB of DDR3 and a 120GB SSD. The FM1 APU may have been slightly slower than the C2D-era CPU, or maybe it was about a wash but it was still a dual-core. Fast-forward to last week, my friend was over there, and was again complaining that it wouldn't watch Twitch streams without pausing, so I went over and upgraded to a quad-core FM1 APU that I had picked up months ago for that purpose.
It at least allowed him to watch 720P archives on Twitch, but he again had trouble later on, watching a live stream at 720P60. Which is weird, sort of, because the FM1 APUs are supposed to be able to decode H.264 @ 720P60 or 1080P30, in hardware. So maybe the PC wasn't configured right in software.
I've proposed building a 2200G rig, for $400, with 16GB DDR4 and a 256GB M.2 NVMe SSD, they said "too expensive". Also looking at maybe utilizing a G3258 @ 4.0Ghz, plus a GT 730 2GB GDDR5 card. Could re-use RAM and SSD in that case, and possibly not have to re-install Windows 7 64-bit.
Also looking at re-built refurb units, there is a Celeron G3930 Kaby Lake dual-core, 4GB / 500GB HDD, for $125, and a Core i3-7100, 8GB DDR4 / 1TB HDD / Windows 10, for less than $200, "used". (Not even "refurb".)
Edit: Oh, and using the most recently-released Media Creation Tool (for 1803), I made a USB drive, and installed a fresh new SSD into a couple of laptops that shipped with Win8.1 Pro keys in BIOS, and they installed and activated Win10 Pro. Didn't have to do anything. Guess that settles it, MS is still allowing upgrades, from legit licenses.