在过去的几个月里，我们听到了很多关于下一代视频游戏机的RDNA 2 ，尤其是(RDNA 2)Xbox Series X/S。它旨在提供比以前控制台中使用的GCN技术显着改进的性能。(GCN)
RDNA 2 不仅会使下一代游戏机受益，因为它们现在可供公众使用，因此目前被视为当前一代。
什么是 RDNA 2
嗯，它是代表Radeon DNA的(Radeon DNA)AMD技术，它是下一代 PC 游戏、Xbox Series X/S和PlayStation 5所关注的图形渲染的基础。它也是RDNA的继任者，2019 年(RDNA)7 月 7(July 7)日发布，过去不是很远，所有的事情都考虑到了。
据AMD人员介绍，与第 1 版相比，其新的RDNA GPU架构可提供高达 50% 的性能提升，与GCN相比可提升高达 100% 的性能。不仅如此，这项新技术还支持光线追踪，这是最近在游戏中广为人知的一项功能。
现在，该技术还支持Infinity Cache、网格着色器、可变速率着色和采样器反馈。
RDNA 2的某些方面与RDNA 1相似。最明显的是基于TSMC 7nm的制造工艺。总体而言，新版RDNA的核心构建块与原版基本相同，主要区别在于基于硬件的光线追踪支持。
什么是 RDNA 2 无限缓存
关于这种渲染技术还有一个更有趣的事情我们需要讨论，它被称为Infinity Cache。我们这里拥有的基本上是一个为游戏工作负载定制的 128MB 三级缓存。
我们知道它的密度比L3 RAM高 4 倍，而这样做的主要原因是为了提高效率。现在，当它被添加到GPU时，它基本上会阻止它在大多数情况下通过包将信号一直发送到内存。
与仅增加内存模块的总线宽度相比，这样做会使Infinity Cache更节能、更快。
让我们谈谈光线追踪
正如我们上面提到的，RDNA 2 GPU(GPUs)将支持基于硬件的光线追踪，这是一笔巨大的交易。是的，AMD被英伟达(Nvidia)打败了，从目前为止我们通过几份报告可以看出，英伟达(Nvidia)的光线追踪技术在这个时候更加成熟。
然而，这并不意味着RDNA 2不会做到这一点。你看，Radeon RX 6000堆栈以及下一代控制台中可用的堆栈，都有一个专用的“光线加速器”连接到每个计算单元。
然而，就目前而言，AMD对(AMD)Nvidia的深度学习超级采样(Deep Learning Super Sampling)( DLSS ) 技术没有答案，这意味着Nvidia显卡将具有优势，但(Nvidia)Xbox Series X/S的情况可能并非如此。 S担心。
你看，微软(Microsoft)和AMD正在开发他们自己的DLSS版本，称为DirectML，所以我们可以在遥远的未来看到一些惊喜。
支持 DirectX 12 Ultimate
RDNA 2 支持 DirectX 12 Ultimate带来的所有功能，其中一些功能包括网格着色、可变速率着色和采样器反馈等。这意味着，开发人员应该体验到更高的性能，这对消费者来说是件好事。
不仅如此，AMD GPU(AMD GPUs)还将获得Microsoft对DirectStorage API的支持。我们了解此API旨在让您的NVMe SSD直接与您的显卡通信。发生这种情况时，游戏玩家应该会看到加载时间和资产流的增加。
Xbox Series X/S无疑将受益于此，以更好地跟上PlayStation 5(PlayStation 5)中更快的SSD。
What is RDNA 2 and how will it affect the future of AMD gaming
Оver the past couple of months, we’ve been hearing a lot about RDNA 2 where the next-generation video game consoles are concerned, especially the Xbox Series X/S. It is designed to deliver significantly improved performance over the GCN technology that was used in the previous consoles.
RDNA 2 won’t just benefit the next generation consoles, which as of right now, are deemed as current generation since they are now available for the general public.
What is RDNA 2
Well, it’s an AMD technology that stands for Radeon DNA, and it is the foundation for graphics rendering where next-generation PC gaming, Xbox Series X/S, and PlayStation 5 are concerned. It is also the successor to RDNA, which was released on July 7, 2019, which is not very far away in the past, all things considered.
According to the folks at AMD, its new RDNA GPU architecture can deliver up to 50 percent more performance when compared to version 1, and up to 100 percent when compared to GCN. Not only that, but the new technology supports ray tracing, a feature much talked about in gaming as of late.
Now, the tech also supports Infinity Cache, mesh shaders, variable-rate shading, and sampler feedback.
There are some aspects of RDNA 2 that are similar to RDNA 1. The most obvious is the manufacturing process that is based on the TSMC 7nm. Overall, the core building blocks of this new version of RDNA is relatively the same as the original, with the main difference being the hardware-based ray tracing support.
What is RDNA 2 Infinity Cache
There is one more interesting thing about this rendering technology that we need to discuss, and it is called Infinity Cache. What we have here is basically a massive 128MB L3 cache that has been customized for gaming workloads.
We understand that it is denser than L3 RAM by up to four times, and the primary reason for this is to aid with efficiency. Now, when this is added to a GPU, it basically prevents it from sending signals all the way across the package to the memory in most cases.
Doing this makes the Infinity Cache more power-efficient and faster compared to just increasing the bus width to the memory modules.
Let’s talk about Ray Tracing
As we’ve mentioned above, RDNA 2 GPUs will support hardware-based ray tracing, and this is a huge deal. Yes, AMD was beaten to the punch by Nvidia, and from what we can tell via several reports so far, the Nvidia ray tracing tech is more mature at this time.
However, that doesn’t mean RDNA 2 won’t do it justice. You see, the Radeon RX 6000 stack along with the ones available in next-generation consoles, all have a dedicated “ray accelerator” attached to each compute unit.
As it stands right now, however, AMD does not have an answer to Nvidia’s Deep Learning Super Sampling (DLSS) technology, which means, Nvidia cards will have an edge, but that might not be the case where the Xbox Series X/S is concerned.
You see, Microsoft alongside AMD is working on their own version of DLSS known as DirectML, so we could see some surprises in the distant future.
Support for DirectX 12 Ultimate
RDNA 2 supports all the features that DirectX 12 Ultimate brings to the table, and some of those features include the likes of mesh shading, variable-rate shading, and sampler feedback. This means, developers should experience increased performance, and that is good for consumers.
Not only that, but AMD GPUs stand to gain support for DirectStorage API from Microsoft. We understand that this API is designed to allow your NVMe SSD to talk directly with your graphic card. When this happens, gamers should see an increase in loading times and asset streaming.
The Xbox Series X/S will no doubt benefit from this to better keep pace with the much faster SSD found in the PlayStation 5.
