AMD大声抱歉,你的旧主板并不支持PCIe4.0

如果观看过台北电脑展AMD的演讲,或许会对Ryzen新处理器印象深刻。而作为AMD下一代处理器的Ryzen 3000系列处理器一个十分重要的点显然是PCIe 4.0。作为事实意义上的后继者,PCIe 4.0相对于前代的PCIe3.0能够提供双倍的带宽,并且在其基础上做了一系列的优化。也是因为如此,崭新的PCIe4.0如果与现有的主板搭配可能会产生一系列的问题。在国外的人气平台Reddit上,AMD也对这个问题进行了讨论。

事实上,要把主板上的PCIe3.0升级到PCIe4.0并不会太过困难。为了满足PCIe4.0的使用,必须满足CPU和PCIe插槽间走线的信令规范。如果主板超出本身进行了更优的设计,完美支持PCIe3.0的时候,也有很大可能相同的走线能够支持PCIe4.0信号的传输,并且不会存在任何问题。问题出在,虽然部分主板能够超出并支持PCIe4.0,但是另一些主板连支持PCIe3.0都显得够呛。

可能部分用户会显得失落。因为在Ryzen 3000系列推出前,他们曾幻想过X470、X370或者更廉价的主板对PCIe4.0的支持。对于另外一些人来说,在过去花费颇多购买昂贵的主板,他们也觉得自己的主板应该经历过严格设计能够支持PCIe4.0。甚至在一些千兆字节的主板的Bios里,也显示了支持PCIe4.0的选项。但是AMD的回答无异于一盆冷水,这些Bios的选项也将被撤销。

未来唯一支持PCIe4.0的主板只会是500系列的芯片组,尽管B550系列预期会在今年晚些时间到来,但目前也仅仅只有X570系列能够实现支持。这些芯片组将会符合PCIe4.0标准,但是更老的就不行了。AMD这样做也并非没有考虑,想到部分用户拥有主板而部分用户没有主板,如果让老旧主板支持PCIe4.0,可能会对主板市场造成混乱。

作为AMD Ryzen产品经理之一的Robert Hallock在Reddit上回应时曾表示,旧主板并不能很可靠的运行信号要求更高的PCIe4.0,对于所有的旧主板来说,不能单纯依靠是、否、也许来贴标签。所以当3代Ryzen(AGESA 1000+)最终的Bios发布后,PCIe4.0将不再成为一个选项。

对于用户来说,影响是实实在在的,如果想要体验PCIe4.0,你可能不得不购买X570主板。当然,Ryzen 3000系列处理器也可以在X470和X370主板上运行,但由于PCIe的向后兼容,在这些主板上的处理器将会在PCIe 3.0模式下运行。看来,想要获得PCIe4.0的体验,并不单单是一颗Ryzen 3000系列处理器就足够。

对于这个消息,那些投资购买高端老旧主板的人可能会不开心。另一方面,可能在整个2019年市面上都不会有太多的PCIe4.0设备。而PCIe 4.0固态硬盘,预期大部分将采用群联的E16的8通道主控设计,并且将以8W TDP运行并且也可能极具性价比,但是也不妨多等等直到2020年专用的PCIe 4.0控制器面向市场。

当然,如果你不差钱,又想完美地体验PCIe4.0,那么你需要一颗Ryzen 3000系列的处理器,外加一块X570主板。问题是,你会为了PCIe 4.0更换主板吗?

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