(Be sure to check when looking for a motherboard that any of the models shown below are either 990fx, 990 or 970 chipsets. Other AM3/AM3+ chipsets are not desirable especially for any of the FX8 core CPUs and some Intel vs AMD motherboards might share a similar name while having distinctly incompatible sockets or chipsets.
A "Z170" Extreme6 for example (Z170 being the chipset, and being an Intel chipset), is not going to work with your AMD FX processor, so, in this example, you want to look for the "990/990fx" Extreme6.)
GA-990FXA-UD7
Extreme6
Extreme9
Fatal1ty 990FX Professional
Crosshair V Formula-Z
Sabertooth 990FX R2.0
GA-99FXA-UD5
MSI GD80V2
M5A99FX PRO R2.0
GA-99FXA-UD3
MSI GD65V2
990FX Killer
Extreme4
M5A99X EVO (R2.0 as well)
GA-990XA-UD3
990XA-GD55
GA-970A-UD3P
M5A97 or EVO or PRO (R.2 as well)
GA-970A-UD3
970 GAMING
970A SLI Krait (USB 3.1 supported)
The bottom line though is that ANY of these still available NEW, out there, are going to be grossly expensive and any used board you might find will probably already have as many miles on it as your old board did and either be in the same shape or not far off from it by now, all these years later. These boards are certainly not, and haven't been for some time, still in production.
Personally, my advice is move on. The cost isn't justified for a 9 year old system that had poor performance even when it was new.
Anything out there right now, including lowly i3 or Ryzen 3 parts from the last couple of generations, will grossly outperform any, even highly overclocked, FX CPU and platform.