stress+system+memory报红
作者：CbcaacIntosh
事情的起因是这样的……
辛苦一年，给自己配了台光污染的海景房,13700k华硕Z790-A吹雪大板，内存选择的是最近挺火的光威神策DDR5 7000 32G套条，海力士A-die，可拿回来发现内存灯经常不同步，而且我发现内存灯出问题的时候，软件是读不到内存的SPD信息的！网上搜了下，发现灯条灯光不同步不是小概率事件，大概是说这种没有接主板ARGB接口的灯条，都是把灯控信息写入内存SPD，再通过软件改写或者控制内存的SPD信息来达到灯控的，所以有很大的几率出问题。
为了稳定，还是打算放弃灯条，选用不带灯的马甲条。于是下单了一套光威龙武系列DDR5 6800 32G套条，也是海力士A-die。
临睡前突然看到站内推的一款光威龙武48G套条，DDR5 6400，据说是海力士新M-die，关键是价格不到800，于是也下了一单，正好买回来试试！
仔细看商品的介绍，光威A-die产品标注的是“海力士原厂原字颗粒”，而这个M-die标注的却是“精选颗粒”，配合这个价格，细思极恐啊！
反正买回来了，正好试试这3套内存。
首先看SPD信息，其实这3套内存默认频率都是5600，高频都是XMP超频得来，怪不得叫“手工挑选”颗粒。电压方面，神策7000是1.45V，龙武6800是1.4V，龙武6400只有1.35V。
首先测试龙武6800 A-die：
开启XMP，频率6800，读取超过100Gb/s，延迟68ns。
超频到7200，电压1.4v，正常进系统，读写和延迟都有提高。
跑了下aida64的stress system memory测试，报错，加压到1.45v依旧报错，降频到7000电压1.4v跑30分钟正常。
接下来龙武6400 M-die：
默认6400成绩
分别测试频率6800、7000、7200，6800和7000电压都是1.35v，7200默认1.35v可以进系统，但是跑测试蓝屏，加压到1.4v测试通过，看来这个所谓新M-die比A-die电压要低些，那是不是意味着更能超呢？
但是随后的stress system memory测试，频率7000和7200都报错，加压到1.45v也没用，降频到6800电压1.4v，跑30分钟正常。
然后是神策7000：
因为决定不用灯条了，只是简单测试了下频率7200，顺利通过，再高的话我估计压力测试可能难以通过。
最后是4条内存槽混插插满：
一般4条插槽的主板，只插2条的话都是建议插在2和4号插槽，4条插满的话，只有设置频率6400才能开机，更高的频率即使电压1.45v也无法开机。怪不得高端超频主板都是只有2条内存插槽了！
80G的内存，想当年我的第一台电脑，硬盘都没这么大！
总结一下，这些同品牌不同频率的内存条，厂家出厂前的确是对颗粒进行了“精挑细选”，体质更好的会超频到更高的频率来卖，以至于我们到手以后其实已经没有多少超频空间了。在内存容量够用的前提下，插满4条反而是负优化了。
我最后还是决定选择48G 6400的M-die套条，比32G A-die套条频率仅仅低一点，但是多出50%的容量，价格仅仅高了不到100元，的确是很香。至于是黑片还是降级片，管他呢，反正终身质保！
阅读更多内存精彩内容，可前往什么值得买查看
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