Yes, that is the latest BIOS on the list as per the link I sent above. The name of the BIOS download file is coded in a bit of hexadecimal. The BIOS you have is "7693v
A3". In Hex, that is the number 10 followed by the number 3. In other words 10.3. So you should be good for any CPU on the support list.
Btw, I knew you stated FX-8320, I was just surprised that the FX-8350 wasn't on the list. Sorry to confuse you. The FX-8320 would be a fine up grade. Here it is compared to the FX-6350:
http://cpuboss.com/cpus/AMD-FX-8320-vs-AMD-FX-6350
Here it is compared to your PhII X4 965:
http://cpuboss.com/cpus/AMD-Phenom-II-X4-965-vs-AMD-FX-8320
Yes, the stock AMD cooler gets loud when the fan picks up speed. If you are not going to OC the processor (or only do lite OC'ing), this little guy snaps right on the AMD retention bracket like the stock cooler does:
http://www.newegg.com/Product/Product.aspx?Item=N82E16835103064 I still have mine sitting on the shelf. It never seems to quit. Always seemed quiet to me. It makes a good stock cooler replacement. The best part, is that it can face any of 4 directions the way its mounting bracket is designed.