Question What is RDNA?

[mj.ehsan1999.2nd]

What is RDNA? in computex 2019 , AMD said that the new GPU, Rx5700 uses Navi microarchitecture. we thought that Navi is just a new update for GCN architecture. but unfortunately AMD said that navi uses new Architecture that name RDNA or ( Radeon DNA ). what is RDNA actually? is it GCN2 instead of GCN1.6? or there is no more GCN at all? and instead a completely new Architecture? AMD said that it has 25% more performance per clock versus vega. higher frequency than vega, and finally 1.5x higher performance per watt!!!!!! what?! is it a huge gain in both performance and power consumption for AMD?
side note : I just calculated with this numbers and I guess that Rx5700 has 40CUs@1980MHz , 256bit 14Gbps GDDR6 (10TFlOp./s - 448GB/s) to have 10% better performance than RTX2070.

 

[cdrkf]

What is RDNA? in computex 2019 , AMD said that the new GPU, Rx5700 uses Navi microarchitecture. we thought that Navi is just a new update for GCN architecture. but unfortunately AMD said that navi uses new Architecture that name RDNA or ( Radeon DNA ). what is RDNA actually? is it GCN2 instead of GCN1.6? or there is no more GCN at all? and instead a completely new Architecture? AMD said that it has 25% more performance per clock versus vega. higher frequency than vega, and finally 1.5x higher performance per watt!!!!!! what?! is it a huge gain in both performance and power consumption for AMD?
side note : I just calculated with this numbers and I guess that Rx5700 has 40CUs@1980MHz , 256bit 14Gbps GDDR6 (10TFlOp./s - 448GB/s) to have 10% better performance than RTX2070.

Well AMD were quoted as saying it was a 'ground up blank sheet new design like Zen'- so it's supposedly totally new. As for your poll- they have already stated the first Navi GPU is aimed at the RTX 2070, so no it's not going to beat the '80 series or 80ti. The key things here though will be:
1: Performance per watt vs nvidia
2: Die size for that performance.

The problem with GCN (in games), is it requires a larger area of silicone and more power than nVidia to reach a set level of performance. Case in point, the Polaris 10 gpu (RX 480 / 580) is roughly the same size as GP104 (which powers the 1080 / 1070), however it performs the same as the much smaller GP106 (GTX 1060)- so AMD are selling a larger, more complex and power hungry gpu at lower prices than Nvidia.

For Navi to be a business success- it ideally needs to be the same size (or a little smaller) than the TU106 gpu that is used in the RTX 2070 / 2060 whilst offering similar or better performance. Ideally power consumption should be the same or lower as well- if those points are true, then AMD have a design that can be scaled up as far as nVidia if they want to, and they won't be at a financial disadvantage for each card they sell. That said, if RDNA isn't as efficient as nVidia it can still be a great product, it's just won't be that profitable for AMD. It would be nice if it brings AMD back in line with nVidia though on a performance / area and performance / watt basis.

 

[mj.ehsan1999.2nd]

As for your poll- they have already stated the first Navi GPU is aimed at the RTX 2070, so no it's not going to beat the '80 series or 80ti.

Yes I know that Rx5700 is just 10% better than 2070 in strange brigade (it can be better with next drivers ). But I noticed two things here.
first : Rx5700 name means a possibility for Rx5800 or even 5900.
second : as I guess, it has only 40CUs that can grow up at least by 60% (64CUs) like predecessors ( vega 64, Radeon VII ( +deactivated CUs) , Fury X ) also AMD said that there is no 64CU limit and they just did it to put HBM chips. a 64 CU version with HBM3 2048bit can possibly consume up to 250watts at 1980MHz.
And finally I asked the question for Next generation of Navi ( navi20 ) , against Nvidia's next gen after Turing based RTX2000 and GTX1600 series

 

[mj.ehsan1999.2nd]

Well AMD were quoted as saying it was a 'ground up blank sheet new design like Zen'- so it's supposedly totally new. As for your poll- they have already stated the first Navi GPU is aimed at the RTX 2070, so no it's not going to beat the '80 series or 80ti. The key things here though will be:
1: Performance per watt vs nvidia
2: Die size for that performance.

The problem with GCN (in games), is it requires a larger area of silicone and more power than nVidia to reach a set level of performance. Case in point, the Polaris 10 gpu (RX 480 / 580) is roughly the same size as GP104 (which powers the 1080 / 1070), however it performs the same as the much smaller GP106 (GTX 1060)- so AMD are selling a larger, more complex and power hungry gpu at lower prices than Nvidia.

For Navi to be a business success- it ideally needs to be the same size (or a little smaller) than the TU106 gpu that is used in the RTX 2070 / 2060 whilst offering similar or better performance. Ideally power consumption should be the same or lower as well- if those points are true, then AMD have a design that can be scaled up as far as nVidia if they want to, and they won't be at a financial disadvantage for each card they sell. That said, if RDNA isn't as efficient as nVidia it can still be a great product, it's just won't be that profitable for AMD. It would be nice if it brings AMD back in line with nVidia though on a performance / area and performance / watt basis.

and tnx for that informations