ATI Radeon HD 4000 Series discussion

[v_rr]

And if nothing else has changed they will be still insufficient. 800SPs/32TMUs ratio is worse than 320SPs/16TMUs. If 16 were not enough before, 32 will be even worse now because of the huge number of SPs. If the chip has 40TMUs instead, it will be the same as before. ATI better has done something to that TMUs or we'll see the same bottleneck in texture perfomance

That´s not true. You don´t need such texturing power as that.
G80 with 32 TMU did just well and 8800 ultra is still much faster the 9800GTX in high res with AA and AF.

That´s because it have much more bandwith. So I think that HD 4850 is realy heavy bandwith limited.
GDDR5 in HD 4870 should bring very nice performance jump to feed 800 SP´s.