Originally Posted by jrbd90
The 7800 should be superior to the 6800 ultra and only use 6-cell/90watt brick.
GeForce Go 7800 / GeForce Go 6800ultra
Memory Interface 256-bit / 256-bit
Memory Bandwidth (GB/sec) 35.2 / up to 35.2
Fill Rate (Billion pixels/sec) 6.4 / 5.8
Vertices/Second (Millions) 600 / 565
Yes on paper it should be superior based on the chip as stated above, however it all comes down to the implementation. PCMAG has benchmarked this card in the new inspiron and stock 3dMark05 was ~3800. Now as far as I know this is only slightly better than a 6800 Go stock in a 9300.
You ask why has Dell done this to a chip that has the potential to out-perform the 6800 Go ultra? simple! the M170 has the 6800 Go Ultra as its stock GPU and upstaging this would be suicide for Dells "gaming" laptop! Sales would drop!
Thus to ensure this doesnt occur dell has intelligently likely underclocked the 7800 Go, used the inferior heat-sink assembly also used in the 9300 with the 6800 Go, and also equiped it with only a 90W power supply. The end result.. a GPU with the potential to outperform the 6800 Go Ultra that doesnt quite achieve this due purely to the way it has been implemented!.
To take ful effect of this chip you would need to overclock, supply a superior heat-sink to soak up excess heat production (ie the same heat sink as the 7800 Go GTX/6800 Go Ultra) as well as a 130W power supply to supply the necessary juice to make this card perform.
so yes in short, on paper the chip is superior to the 6800 Go Ultra.. but Dell has ensured that it doesnt steal the thunder of the M170 its "gaming" laptop.