From memory A10 was very quiet compared to A09 (mine was shipped with A09), but the temps were kind of scary, A11 I think was comparable to A09...
In any case you should be able to regress a BIOS using the Linux tool, I did this to convert from A10 back to A09, so it may work if you find the noise to be a bit much (Though I doubt this will be the case)...
From memory A10 was very quiet compared to A09 (mine was shipped with A09), but the temps were kind of scary, A11 I think was comparable to A09...
In any case you should be able to regress a BIOS using the Linux tool, I did this to convert from A10 back to A09, so it may work if you find the noise to be a bit much (Though I doubt this will be the case)...