The AMD Ryzen 4000 Renoir APUs have a reduced number of compute units (CUs) compared to Raven Ridge, but improvements to the architecture means that they can offer higher clocks and a 59% higher performance per CU. This is the reason AMD chose to stick with Vega instead of transitioning to Navi for this generation.
https://www.notebookcheck.net/This-is-why-Ryzen-4000-Renoir-APUs-can-offer-59-higher-performance-per-CU-despite-still-being-on-Vega.449849.0.html
Just 17% from clocks, the rest are all...essentially on the software side? A GPU manufacturer is pushing their sales by withholding software improvements like how most smartphone manufacturers sell cameras??
Quote from: S.Yu on January 19, 2020, 18:45:51
Just 17% from clocks, the rest are all...essentially on the software side? A GPU manufacturer is pushing their sales by withholding software improvements like how most smartphone manufacturers sell cameras??
It's essentially a synergy between the CPU and GPU. Of course, microcode improvements do count as well.
thats just an excuse for not using high end GPU especially navi. point is its just 30 percent fast compared to intel igpu despite 60 percent fast processor. faster processor do help GPU that way it is just at par with intel. This is Shame on AMD which owns ATI. All improvement is due to 7nm TSMC process advantage, what is AMD doing? Answer is nothing, they are not at all serious for laptops. because premium is on desktop. powerful laptop will eat into share of AMD desktop as well apart from intel laptop. and more powerful GPU less opportunity to sell dGPU. So everything is intentional marketing stunt. nothing to do with technology there. that nexus between 2 companies to make fool of customer. Intel had never reduced price of anything. thats where google is right intel platform itself means inefficiency which had been intentionally created to fool customers
While I'd love to see Navi on APUs, I do believe that it's timeline just didn't add up. Navi was released late last year, and while it does bring better performance per watt, I think it's still need to be fine tuned to reach mobile limit of 15W and 45W respectively. Meanwhile, AMD has been using GCN on mobile ever since Kaveri days, so I believe it's already tuned well by RTG. Also, Navi improvements over Vega would be better if it's paired with faster memory like DDR5, which hasn't come into mass market just yet, or the possibility to integrate HBM2 inside the die.
Personally, there are 3 things I would like to know:
1) Did they fix idle times energy usage?
2) Did they add hardware acceleration for AV1 codec?
3) When can we see more laptops with 4800u?
Quote from: A on January 20, 2020, 07:57:33
Personally, there are 3 things I would like to know:
1) Did they fix idle times energy usage?
2) Did they add hardware acceleration for AV1 codec?
3) When can we see more laptops with 4800u?
Yep, that pretty much sums up all the important questions.
Don't forget about memory bandwidth here, people. Aside from higher clocks and maybe minor architectural improvements, Renoir also now boasts DDR4-3200 support as the standard spec, as well as new LPDDR4-4266. Considering most Zen+ based APUs were still running DDR4-2400, I have no doubt things are going to see a big improvement there, considering what we've seen on desktop with higher clocked RAM.