Play4Fun said:
sergiodaly said:
ps3 and xbox 360 have GPUs based on high end GPUs, why will PS4 or Xbox 720 be different... based does not mean equal... my point in using the 7950 as a example has to be with the number of processing units and not so much with memory bus, (witch the 386 bit used in the card is not needed IMO), GPU clock; with that lowered a bit, the number of GPUs usable from the production process will be greater (meaning cheaper overall). this way games could have more things on screen versus the the need to push over the full hd resolution and the screen refreshing speed.
Xenos for example is based in a r500 ati GPU but moded to have more unified shaders than the rest of the r500 family. here if AMD start with a already high count processing units will be easier to moded it to the console needs (more processing units, less GPU speed and lower memory bus)
this could be packed in a 120 whatt envelope by mid year 2013 (time when full production of Orbis will start)
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Did high end GPUs back in 2004/5 consume 200 watts? No. What PS3 and 360 did back then have no bearing on this.
You are saying that all they have to do is cut down features of the 7950 GPU to get it to 120 watts (PS3 and 360 GPUs are around 90 watts BTW). The only way to do that would be to cut it down until it is basically a 7770/7850 which are 80/130 watts respectively. Why not just base it on those GPUs from the beginning instead of wasting silicon, as viper said.
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i can see the first batch of next gen consoles go as high as 250 watt... 200 is the ideal imo but sometimes they go a little over board. and its not cut down... my point is to keep all the 1792 processing untis, but with slower clock speed, less memory speed and a smaller memory bus (256 instead of 384). if they use 600MHz instead of the 800MHz used in the reference card, the TDP we are talking about is achievable.
also... less speed in the GPU core can bring up the number of usable chips in the production process bringing down the price per chip.
