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标题: [新闻] DF：PS4.5可能采用AMD北极星架构GPU [打印本页]

作者: 空缺中 时间: 2016-4-20 17:37 标题: DF：PS4.5可能采用AMD北极星架构GPU

http://www.eurogamer.net/articles/digitalfoundry-2016-sonys-plan-for-playstation-4k-neo-revealed

CPU: The good news is that there will be a CPU upgrade over the lacklustre x86 cores found in PlayStation 4. The bad news is that the cores themselves have not been changed at all - they have simply been overclocked from 1.6GHz to 2.1GHz - a 31 per cent improvement. As with the current PlayStation 4, one core and a time-slice from another is reserved for the operating system.

Memory: We're still at 8GB of GDDR5, with a 24 per cent boost to bandwidth compared to the original PS4. The current machine uses 5.5gbps memory modules. Basic maths suggests that Sony has pushed this to the same 7.0gbps modules we see on high-end graphics cards like the GTX 980 and GTX 980 Ti. There are some concerns here. The boost to bandwidth isn't exactly huge, it will still be in contention with CPU utilisation (they both share the same interface), and the bandwidth doesn't scale particularly well with the mooted GPU boost, which - to be frank - is massive.

GPU: This is the most exciting aspect of the spec. Compute unit count doubles from 18 to 36, and clock-speed increases from 800MHz to 911MHz - a 14 per cent increase. That's an overall increase of 2.3x in FLOPs. The question is, what technology is being used here? AMD has created both of its current-gen console processors so far by taking older, off-the-shelf components and disabling a couple of compute units. In effect, Xbox One got the Radeon HD 7790, while PlayStation 4 got a more capable, semi-custom Radeon HD 7870. Here's where things get interesting - the 36 compute unit count cannot comfortably fit any of AMD's existing GPUs. It suggests that Sony and AMD have pushed the boat out, that they are using the upcoming Polaris technology.

GPU从18个处理单元提高到了36个处理单元，频率则从800MHz提升到了911MHz，总体运算能力提升了2.3倍。但问题在于，这是否是全新的GPU架构呢？有趣的地方来了：36处理单元的数据无法匹配AMD目前所有的市售GPU型号，而此前PS4和Xbox One的GPU都可以找到对应—PS4是定制版HD 7870，Xbox One使用的是HD 7790。Digital Foundry认为，不能排除AMD为新款PS4提供了尚未发布的Polaris架构GPU的可能性，36处理单元和256bit显存位宽的数据和此前泄露的Polaris架构GPU产品吻合。

作者: 洒家又回来了 时间: 2016-4-20 17:38

posted by wap, platform: iPhone
赢定了！

作者: 松鼠司机 时间: 2016-4-20 17:40

posted by wap, platform: Meizu 魅蓝2

引用:

原帖由 @洒家又回来了于 2016-4-20 17:38 发表
赢定了！

赢谁？

作者: 空缺中 时间: 2016-4-20 17:45

上周neogaf有个老外说过NX也是用北极星架构的GPU

作者: 來福時代 时间: 2016-4-20 17:51

估计是北极星阉割版，至于4.2tflops觉得是吹水，因为已经很接近gtx980的4.6tflops

作者: EpilogueSKM 时间: 2016-4-20 17:54

引用:

原帖由 來福時代 于 2016-4-20 17:51 发表
估计是北极星阉割版，至于4.2tflops觉得是吹水，因为已经很接近gtx980的4.6tflops

就是北极星的480X

作者: nicklt 时间: 2016-4-20 17:55

posted by wap, platform: iPhone
儿子又得换显卡了

作者: 特殊字符 时间: 2016-4-20 18:08

那索索们换不换主机呢？大本营阿九都闹翻天了

作者: west2046 时间: 2016-4-20 18:14

不错啊，可以pk电脑了

作者: 骨软症 时间: 2016-5-13 08:35

posted by wap, platform: Android

引用:

原帖由 @nicklt 于 2016-4-20 01:55 发表
儿子又得换显卡了

sony从爹爹变儿子了？

作者: 岩波书店 时间: 2016-5-13 10:01

posted by wap, platform: iPhone
有好看的限定版就买咯，最好仁王来一个限定

作者: 大头木 时间: 2016-5-13 10:13

posted by wap, platform: OPPO
还是用上网本u吗

作者: u571 时间: 2016-5-13 10:33

引用:

原帖由 來福時代 于 2016-4-20 17:51 发表
估计是北极星阉割版，至于4.2tflops觉得是吹水，因为已经很接近gtx980的4.6tflops

这有什么好奇怪的，200美金的GP106单精度浮点都有4.2T了

作者: 你老闆 时间: 2016-5-13 11:01

引用:

原帖由 來福時代 于 2016-4-20 17:51 发表
估计是北极星阉割版，至于4.2tflops觉得是吹水，因为已经很接近gtx980的4.6tflops

N卡的tf一向比同級A卡的低些吧.

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