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蓝椒
@JohnShhhu
前 Intel NAND 可靠性工程师,现从事自旋电子学。拆NAND,DRAM,HBM,也会讲讲MRAM的故事。 业余时间研究美股,不荐股,不代表东家。
Joined July 2026
29
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21
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86
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蓝椒
@JohnShhhu
about 5 hours ago
NAND 和 DRAM 都是在给电子盖房子,但盖法完全不同。3D NAND 是建高层。房间叫 charge trap,少数路线用 floating gate。DRAM 是在指甲盖大的地皮上立密密麻麻的蓄水罐,每个 bit 一口微型电容。 关键差别:DRAM 的罐会漏,毫秒级就要刷新。NAND 的房间要把电子锁住好几年。一个怕漏,一个怕待不住。存储可靠性从这里才开始。
蓝椒
@JohnShhhu
about 3 hours ago
@hanking66
可以不做空头,但是做空对冲风险是值得用的思路啊
蓝椒
@JohnShhhu
about 3 hours ago
@yifaer_chen
发姐,资金体量大的话可以远离个股,ETF 几乎可以躺着数钱。
蓝椒
@JohnShhhu
about 3 hours ago
@0xarthurzs
需要写这么多吗?全职干啊?
蓝椒
@JohnShhhu
about 3 hours ago
@hanking66
不看不看,不讲不讲
蓝椒
@JohnShhhu
about 4 hours ago
AI 为什么缺存储?大模型跑起来,参数和对话都得实时堆在内存里,越用越多。 可存储御三家三星、海力士、美光没想到 AI 来势凶猛,十几年一直就那么点产能,全跑去做利润高的 HBM 。HBM同样容量占的晶圆面积是普通内存的两三倍(我们以后再讲 HBM)。结果就是产能一转,普通内存 throughput 直接腰斩。 再加上新厂两三年才建好,好货又被英伟达他们提前包了。 于是:内存半年涨了六成,硬盘涨七成,缺货十五年之最。
蓝椒
@JohnShhhu
about 5 hours ago
@roger73005305
哈哈哈哈哈
蓝椒
@JohnShhhu
about 6 hours ago
@ycfcd1688
会不会封号
蓝椒
@JohnShhhu
about 6 hours ago
换个角度想想,伊朗希不希望美国高通胀?
蓝椒
@JohnShhhu
about 7 hours ago
@Alpha_Cat
那就做空啊,既然决定跌
蓝椒
@JohnShhhu
about 7 hours ago
@BmenIcr
@IamRamenPanda
呸呸呸,不讲不讲
蓝椒
@JohnShhhu
about 8 hours ago
@Nicole_yang88
如果按历史统计,7 月份就不会套住真么多少
蓝椒
@JohnShhhu
about 9 hours ago
@kingbtc1000k
@iiiinvest
不是盘前已经挺爆炸了么
蓝椒
@JohnShhhu
about 9 hours ago
害怕黑天鹅,害怕伊朗搞事情,不是因为你渴望世界和平,只是因为你没空仓,因为你没子弹继续加仓。😃
蓝椒
@JohnShhhu
about 10 hours ago
@lengs4189
确实不贵,就是不知道对电信优化怎么样
蓝椒
@JohnShhhu
about 10 hours ago
我花了点时间Vibe coding了一个网页,主要给大家分享一下美股ETF的门道,不是荐股,是一张能点的图鉴。把 21 只常见美股 ETF 摊开:各自装了什么、这段行情赚了多少、跌起来有多狠、每年交多少费率,盘中可以自动刷新,大家感兴趣的光临一下寒舍。链接在这:https://t.co/fiYLmaS1ln 。I built this with Grok — try it out!
蓝椒
@JohnShhhu
about 13 hours ago
@IamRamenPanda
已经不想看了,闹心。半死不活的半导体行情
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