Rumour: PS4 to feature AMD GPU a gen ahead of nextbox

[Viper1]

sergiodaly said:

Viper1 said:
Sergiodaly, the problem with your prediction isn't cost but power consumption and heat dissipation. A 180 watt GPU at 28 nm processing will not be 100 watt next year even with upcoming 22/20 nm processing.

that is why i use the term, modified
they can bring the GPU clock speed down and bring the memories speed down... also, that power output is for the entire card, and here sony will only use the GPU, and mems, the rest could be taken down or rearranged in the motherboard...

they cut by half the power used by ps3 from the 1st fat to the 2nd slim... until then same things could be done to improve the power usage!

lots can happen until then!

They also cut down the chip sizes from 90 nm to 40 nm.   You won't go from 180 to 100 just going from 28 nm to 22 nm. You also don't count the entire PCB board when calculating the TDP of a GPU...you count only the GPU.  The rest of the board is minimal anyway.

Scoobes, the HD 7870 is a 180 watt GPU.   Not going to happen.

 

As for downclocks to keep thermals in check.  May was well use a different chip instead of a bulky HD 7970 or HD 7870.    Why pay for silicon you don't need?