Originally Posted by Noufel
We know now why AMD has rebranded its 290/X gpus but what i don't understand is why the fiji gpus don't show the same gains in dx 12 like hawaii did, we are seeing this in fable legends and we have seen this in AOTS.
Fiji is probably fill rate limited by it's 64 ROPs at this point...something I always thought would prove to be an issue.
Originally Posted by ku4eto
They were making a new memory controller, they weren't probably aware of such possible problem. Can't really predict it until tested.
They weren't aware that not improving ROP count at all over Hawaii while dramatically increasing the count/width of other functional units could possibly create a bottleneck? That's total nonsense.
Unless you think the AMD engineers that created Hawaii had no clue what they were doing, this was something easily foreseeable. It's certainly something every non-insider has been suspicious of since the original leaks stating 64 ROPs.
More likely, there was no room for more ROPs, or no time for the significant redesign they would require, and sacrificing in other areas to get them would have resulted in worse overall performance for the intended spectrum of Fiji's uses.
Originally Posted by ZealotKi11er
There seem to be some problem since Fury lineup does not seem to be more then 10% faster then 390X which should not be the case.
Fury X has the same theoretical maximum pixel fill rate as a stock 390X.
That it's faster in all other metrics, yet performance is barely better, strongly suggests the Fury X is ROP limited.
Originally Posted by Mahigan
Only time will tell but seeing an old R9 290x keeping up with nVIDIAs latest cards is most impressive no? That's with mild Async Compute usage as well. As more titles release this will become far more evident.
Indeed, and if I ever find a DX12 game I want to play before I'm compelled to replace my non-reference CFX 290Xs, they will probably prove to be a solid value for the $550 total I paid for both.
Originally Posted by jologskyblues
I guess that explains all the 300 series rebrands this year. Smart business move from AMD?
Necessity explains the rebrands, and it was always the only viable business move.