Yeah.
I had an FX 8150 (free) and later an 8300, both were pretty bleh. Neither stood a chance against my i7 920. Only used them because my X58 setup was just too fiddly and would bsod almost every day.
There was so much misinformation about the FX; it was a chip that went wide (8 core) rather then Small and speedy like Intel's did. They released a chip in an era where Single core was still king. Thats why it performed so bad in comparison to other models. But if you look at it today, it can still cope up using a RX580 and capable of doing 60FPS gaming, solid.
Ive had one for 2 years approx; before that a 1055T 6 core. I'd say the Vishera was overall faster due to it's clockspeed advantage and DDR3, but it needed to be tweaked. With tweaking we're not talking about the avg OC guide where you raise the multiplier and call it a day, nope. You dig into that platform, and start working on latency's, FSB and everything around it.
You also make sure your cooling is up for it and so does your board. Many boards did'nt exactly specifcy which VRM they had and if they where capable of doing 200W. Thats why you see most OC's of FX chips "end" at 4.5Ghz on avg. Its not because of the limit of the chip but because of the limit of what the board could do in regards of power.
5Ghz was'nt unusual, but it ate power for breakfast at that speed. Ive managed to run 300Mhz FSB with 4.8GHz clock and DDR3 2400Mhz which was technically not supported (only by OC). If you measured that thing against chips today it would fare well against a R1700 or so (769+ points in CB15). The culprit is it's shared resources (cores share the same things) and it's quite long pipelines (overcome by faster clocks).
Thats why the FX or Opteron kind of failed, it just was'nt up for it's expectations compared to the previous generation. But! If you know how and what to tweak there's easily 40% performance on the table. And no it does'nt consume 220W with just playing games. 220W is a scenario where all cores are taxed to the max. These are great OC'ers.
When i replaced that with a 2700x it was day and night. Most remarkable was the minimum FPS in games. With a 2700x that was 100% better then a FX. The FX could be tweaked for games too, it was raising the CPU/NB speed which indirect was responsible for the L3 cache (speed) and would greatly benefit games in that.
Ive spend countless of hours; 5GHz or even 5.2Ghz was possible on just water but it ate power so much that the cooling was'nt up for it. 4.8Ghz is exactly where you wanted a chip like that. Back then it was a perfect cheap 8 core chip that could do better against a i7 in multithreaded things. Many people attest to that.
It was just good value!
On the subject of the motherboard i just bought i was pleasent;y
That Core2Duo one is a pain with the eight pin so near other stuff to get the connecters out. 
