RTX 3080显卡PCIe 4.0/3.0游戏性能对比：差距只有1.7%

Release time：2020-09-17
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source：快科技
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昨晚NVIDIA的RTX 3080显卡率先解禁了，性能测试大家也都看过了，提升还是很明显的，况且还降价1000元，所以RTX 3080显卡总体上可以说“真香”，5499能买到很值。

对于RTX 30系列显卡来说，还有个问题值得关注，那就是这代显卡也支持PCIe 4.0了，相比PCIe 3.0带宽翻倍，理论上可以提升性能，那到底提升有多大呢？

Kitguru网站昨晚使用RTX 3080显卡对比了15款游戏，分别在AMD锐龙9 3900XT（支持PCIe 4.0）及Intel酷睿i9-10900K平台上做了对比。

每款游戏的具体测试不说了，主要看下综合结果：

RTX 3080显卡PCIe 4.0/3.0游戏性能对比：差距只有1.7%

首先得承认一点，PCIe 4.0的带宽优势是非常明显的，3DMark的PCIe功能测试啊可以看到RTX 3080在PCIe 4.0下接口带宽达到了26.28GB/s，确实是PCIe 3.0下13GB/s的两倍。

但是双倍的带宽对游戏性能影响如何？他们汇总的15款游戏性能对比如下，分为1080p、2K及4K三种分辨率。

RTX 3080显卡PCIe 4.0/3.0游戏性能对比：差距只有1.7%

RTX 3080显卡PCIe 4.0/3.0游戏性能对比：差距只有1.7%

RTX 3080显卡PCIe 4.0/3.0游戏性能对比：差距只有1.7%

对比PCIe 4.0与PCIe 3.0，在锐龙9 3900XT平台上，不论1080p、2K还是4K，性能变化不大，4K下完全一样，1080、2K下只差了2fps，折算下来对性能影响最多也就1.7%，对体验几乎没有影响。

当然，个别游戏中帧数波动会大一些，但是PCIe 4.0与PCIe 3.0这点差距完全不是啥问题，至少不会影响到你选择平台。

之前NVIDIA也解释过了，PCIe 4.0升级的优势还不如CPU对游戏性能的影响大，实测也确实如此，PCIe 3.0的10900K性能依然明显领先3900XT，比PCIe 4.0重要多了。

RTX 3080显卡PCIe 4.0/3.0游戏性能对比：差距只有1.7%


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