OK, finally got my A10-7850k & Gigabyte GA-F2A88XN-WiFi up and running.
I say finally, because it's been a pain in the rear end, if you're thinking of buying the above and you haven't got an existing FM2 cpu/apu then you're in trouble as the shipped bios (atm) doesn't recognise FM2+ APUs! Luckily I still got my 6800k, so i popped that in the board with the latest bios upgrade (F3) on a USB stick...oh no, it couldn't be that simple, it kept saying the flash utility is outdated. So i put the old SSD in with the win7/6800k system on, luckily that booted up ok. Still couldn't updated the bios through that...needed to be 32bit!
Finally had to used Rufus to create a USB DOS loader, that got my able to install (F2) bios...jeez!
Built up the system with the A10-7850k & win7 64...so far i've just ran 3DMark06 (i've been using that since it began, so i can compare to older systems)
here's what i got so far...
A10-6800k & F2A85XN-WiFi 1600mhz RAM = 8452 score, cpu = 4697
A10-6800k & F2A85XN-WiFi 2400mhz RAM = 10070 score, cpu = 4686
A10-6800k & F2A85XN-WiFi 2400mhz RAM (4.6ghz + 1054mhz GPU) = 10616 score, cpu = 5020
A10-7850k & F2A88XN-WiFi 1600mhz RAM = 8596 score, cpu 4725
A10-7850k & F2A88XN-WiFi 2400mhz RAM = 10684 score, cpu 4801
so with 1600mhz RAM it's no different to the 6800k, but using 2400mhz RAM it's better than the 6800k overclocked!