Sorry, I haven't read every post if anyone else has posted this.
The way AMD's new turbo works is it lets the GPU get to it's temp target (~94°C), then increases fan to maintain that temp. If the fan can't maintain that temp then the card will throttle to do it.
1, Not all cards operate at the same voltage. Therefore cards that operate at lower voltages won't have to throttle as much as those that operate at higher voltage. Some chips are leakier than others and require higher voltage to be stable. This is exaggerated by the use of quiet mode.
2, These are mass produced cards. Not every heat sink is going to be attached exactly the same. Again, any differences are going to be exaggerated by quiet mode.
3, Remember in quiet mode the fan has been turned down lower than what is optimal for the cooling of this chip. It is optimized for low noise (relatively speaking) instead. In uber mode the fan speed is set to be able to maintain optimal performance. Some sites have used the excuse that the card comes out of the box set to quiet mode to randomly determine that is the default setting. AMD has stated that both settings are fully supported and are considered default settings.
4, Have we ever seen such scrutiny between the performance of review cards and retail cards. For example, are any of the nVidia cards used in the comparisons been tested against retail cards to see if their performance is typical of what is sold over the counter? Ask yourself why.
The way AMD's new turbo works is it lets the GPU get to it's temp target (~94°C), then increases fan to maintain that temp. If the fan can't maintain that temp then the card will throttle to do it.
1, Not all cards operate at the same voltage. Therefore cards that operate at lower voltages won't have to throttle as much as those that operate at higher voltage. Some chips are leakier than others and require higher voltage to be stable. This is exaggerated by the use of quiet mode.
2, These are mass produced cards. Not every heat sink is going to be attached exactly the same. Again, any differences are going to be exaggerated by quiet mode.
3, Remember in quiet mode the fan has been turned down lower than what is optimal for the cooling of this chip. It is optimized for low noise (relatively speaking) instead. In uber mode the fan speed is set to be able to maintain optimal performance. Some sites have used the excuse that the card comes out of the box set to quiet mode to randomly determine that is the default setting. AMD has stated that both settings are fully supported and are considered default settings.
4, Have we ever seen such scrutiny between the performance of review cards and retail cards. For example, are any of the nVidia cards used in the comparisons been tested against retail cards to see if their performance is typical of what is sold over the counter? Ask yourself why.