I don't need a link since TMUs and ROPs are units that consumes memory bandwidth and can be calculated e.g. ROP's and TMU's bytes per cycle rates.
None of the PC hardware has shown a prototype 7850 with 12 CUs (768 stream processors with 48 TMUs) and 153.6GB/s memory bandwidth.
Disabled CUs doesn't change the fundamental processing power of the device i.e. it will remain about 1.3 TFLOPS at 860Mhz from 12 CUs.
For read and write ROPs, 7790's 96 GB/s bandwidth wouldn't even fully use it's 16 ROP's Gpixel rate e.g. 165 GB/s.
If 60 fps was the target frame rate, anything less than 7950 would need to reduce the render resolutions.
Oh yes you need to because you are making arguments based on your opinion,i am making mine based on fact,
The xbox one has a 7790 with 2 CU disable is not a prototype 7850 that card didn't have 14 CU it had 12,the xbox one has 14 with 2 disable,and the regular 7850 has 16 and both 7850 had 32 ROP.
So yeah it is not.
No dude and it has been argue that 2 CU more at 800mhz would have been better than 6% GPU upclock.
The xbox one doesn't have a full 7790 so needing 165Gb/s is even less relevant,even more at resolutions lower than 1080p which is the case with BF4 and several other games,
For 1.18TF you don't need 165GB/s bandwidth or it will serve you for anything,mind you that MS claimed 140GB/s to 150 GB/s that is what you will get no 204GB/s,so yeah even your 165Gb/s number would saturate that banwidth.
In the end i told you so having a weak GPU with high bandwidth will not change anything,BF4 720p just confirmed that.