Oh look a high end computer graphics card that is only 7 inches/177mm in length. This is a full Nvidia GTX 670. It requires very little power compared to other high end PC graphics cards, it produces much less heat (see those 2 small fans? that is all it needs), and it is small.
Now imagine this chip customized for consoles, intergrated onto the console mainboard with customized cooling. You can have a powerful console in a very small size. AMD's offerings are huge compared to this.
This would be a neat GPU to have on a console.
ShadowDeathX
With Radeon HD 7870, NVIDIA hasn't beaten AMD on performance per watt and performance per die size.
Compared to other high end PC graphics cards, Radeon HD 79x0 supports 64bit floating point math better than GTX 680.
Radeon HD 79x0 will be receive its own power reduction improvements via Radeon HD 7970 Ghz Edition's version 2 stepping .
Tahiti XT2, or Radeon HD 7970 GHz Edition, will ship with a core clock speed of 1100 MHz, 175 MHz faster than the HD 7970. The GPU core voltage of Tahiti XT2 will be lower, at 1.020V, compared to 1.175V of the Tahiti XT
Radeon HD 7970(Tahiti XT1) consumes about 210 watts(1) @ 1.175V. If the amps remains the same, Tahiti XT2's 1.020V may yield about 182 watts i.e. lower than GTX 680's 190 watts. Tahiti XT2' @ 1.020V is also clocked faster at 1100Mhz i.e. 175Mhz faster than Tahiti XT1's 925Mhz.
References
1. 7970's consumes 210 watts link http://www.atomicmpc.com.au/Feature/296004,amd-radeon-hd-7970-reference-disassembly-guide.aspx
From http://www.guru3d.com/article/asus-radeon-hd-7970-directcu-ii-review/4 Radeon HD 7970 has 210 watts.
Believe it or not, the high end Radeon HD 7970 has a rated peak TDP (maximum power draw) of just 210 Watt, and that's really all right for a product of this caliber, features and performance.
From http://www.techspot.com/review/481-amd-radeon-7970/page2.html Radeon HD 7970 has 210 watts.
"it still chugs up to 210 watts under load"
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