I'm considering to order 8505 board. The information of this thread was useful.
I have few questions/requests.
1. Can somebody made objective recap of improvements achieved by updating the BIOS. e.g.
- power IDLE
- power single/multy thread load
- CPU score
2. What are the consequences of flashing unofficial BIOS - can you upgrade /downgrade later on or is just one way route?
You can flash forwards and backwards on the 8505 unit. I started with a stock unit, flashed the non-HWP BIOS
@fta provided, flashed back to the stock BIOS, flashed the HWP BIOS, reflashed the stock BIOS, then reflashed the HWP BIOS, then the stock BIOS, then the HWP BIOS again. The latest stock BIOS is available on
http://pan.changwang.com:8888
You're not going to save any power by flashing the unlocked BIOS. The lowest achievable idle power is with the stock BIOS with C-states enabled. This is also the highest latency configuration. "Latency" in this case is approximately half a millisecond. There is a chart in this thread that lists the performance gains I had between stock and tuned settings. Suffice it to say you may gain between 3% and 10% depending on the type of calculations being performed. I opt to use the HWP BIOS because it gives slightly worse idle power usage but slightly better latency. That said, I could live with the stock BIOS if I had to. Those with more than 1 P-core will see bigger gains from the unlocked BIOS if they follow the recommendations fta provided.