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原文:http://www.eurogamer.net/article ... ets-ultra-hd-gaming
DF今天解读了一个最新的Scorpio白皮书,提到几个关键点:
1. 去掉了ESRAM,白皮书上特意强调了“Scorpio和PC没有ESRAM”而“XO和XOS有ESRAM”,开发者不许制作只针对Scorpio的游戏,希望开发者会继续针对XO/XOS的ESRAM结构做出优化
"ESRAM remains essential to achieving high performance on both Xbox One and Xbox One S," the whitepaper reveals. "However, Project Scorpio and PC are not provided with ESRAM. Because developers are not allowed to ship a Project Scorpio-only SKU, optimising for ESRAM remains critical to performance on Microsoft platforms."
2.再次强调6Tflops的单精度性能,是XO的4.5倍,双倍L2容量,和PS4 Pro一样支持DCC
The six teraflop GPU is once again confirmed, with the GPU's compute power rated at around 4.5 times the capabilities of Xbox One. Four times more L2 cache is also confirmed - a new detail that does not tell us that much, except that that the GPU architecture in Scorpio is at least as modern as AMD's Polaris line. Based on our discussions with Mark Cerny on PS4 Pro, we can reasonably assume that Microsoft can customise its GPU core just as Sony did, with access to Radeon roadmap features up to - and perhaps beyond - AMD's upcoming Vega architecture. Microsoft gives away little here, other than to confirm that delta colour compression (DCC) is a part of the Scorpio GPU feature set, just as it is in PS4 Pro.
3.CPU很可能还是Jugar,白皮书提到了建议让GPU跑60hz渲染,CPU继续跑30hz,和8核zen的性能不是很符合
"We acknowledge that developers may not wish to spend all of the additional GPU resource of Project Scorpio on resolution, and this is not mandated," the paper says. "To make the best games possible, developers will inevitably spend GPU resource on other quality improvements such as higher fidelity shadows, reflections, texture filtering and lower draw distances. Another option developers might consider is frame-rate upscaling - running graphics at 60Hz but the CPU at 30Hz and interpolating animation."
4.和PS4 Pro一样的半像素渲染方式
"Half-resolution rendering is typically used for transparencies and screen-space effects, SSAO, SSR, and perhaps even shadow accumulation, global illumination and non-important local lights," the white paper reveals. "On Project Scorpio, a half-resolution effect rendered at 1080p and bilaterally up-sampled to 4K could look as good or better than the same effect rendered at full resolution on Xbox One. For example, on Xbox One, the effect is produced at full resolution, say 900p, but on Project Scorpio, the effect is produced at 1080p, which is half resolution."
5.最后预测了一下可能的GPU规格,很可能是44/40组CU跑1.07Ghz/1.18Ghz,主要是考虑到Scorpio和PS4 Pro一样定制了GPU构架借鉴了不少VEGA的内容 |
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