{"meta":{"id":"https:\/\/api.iclient.ifeng.com\/ipadtestdoc?aid=ucms_7y7xDEwAiDY","type":"doc","o":"1","documentId":"ucms_7y7xDEwAiDY"},"body":{"newStatus":"1","documentId":"ucms_7y7xDEwAiDY","staticId":"ucms_7y7xDEwAiDY","title":"DDR5 内存标准来了:频率、带宽提升,功耗降低","shareTitle":"DDR5 内存标准来了:频率、带宽提升,功耗降低","thumbnail":"http:\/\/d.ifengimg.com\/w150_h106_q100\/x0.ifengimg.com\/res\/2020\/2EA263785943458911B110C5436D157D937B6A73_size31_w678_h381.jpeg","source":"安卓中国","author":"","editorcode":"weMedia","editTime":"2020-07-15 15:02:00","updateTime":"2020\/07\/15 15:02:00","wapurl":"http:\/\/\/\/feng.ifeng.com\/c\/7y7xDEwAiDY","introduction":"","wwwurl":"http:\/\/\/\/feng.ifeng.com\/c\/7y7xDEwAiDY","commentsUrl":"ucms_7y7xDEwAiDY","commentCount":0,"text":"
去年下半年开始,使用 LPDDR5 内存的手机陆续发布。虽然用于电脑的 DDR5 内存与用于手机的 LPDDR5 并不相同,但这也让许多 DIY 玩家期待 DDR5 内存的到来,那么它今天真的来了。<\/p>
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JEDEC 固态技术协会最初计划在 2018 年公布 DDR5 SDRAM 最终规范,但是很显然跳票了。两年后的今天,新规范正式公布,同时各大内存厂商也表示基于新规范的内存产品最快年内就能进行量产,不过一开始会用在服务器上,后来才是家用 PC 以及其他设备。<\/p>
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本次的新标准主要提升了内存密度和频率,其中最高速度将达到 6.4Gbps,单条 LRDIMM 的容量也将达到 2TB,最大 UDIMM 容量为 128GB。<\/p>
其中 LRDIMM 为 Load-Reduced DIMM(低负载 DIMM),指采用新技术和较低工作电压,达到降低服务器内存总线负载和功耗的目的,并且可以让服务器总线可以支持更大的内存容量和工作频率。<\/p>
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UDIMM 则为 Unbuffered Dual In-Line Memory Modules 或者 Unregistered Dual In-Line Memory Modules,是无缓冲双通道内存模块。<\/p>
DDR5 的单个 DIMM 还被分成了 2个通道,可以在核心速度相同的情况下实现 DDR4 两倍的额定传输速度,有效带宽增加一倍。<\/p>
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容量方面,DDR5 单个内存芯片密度最高可达 64Gbit,相比之下 DDR4 为 16Gbit。内存带宽方面,DDR5 预计将达到 4.8Gbps,是 DDR4 的两倍,总传输带宽将会提升 38%,最高可达 8400MHz。<\/p>
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如果你看不懂以上内容,记住到时候换内存就可以了。<\/p>","img":[{"url":"http:\/\/d.ifengimg.com\/mw640_q100\/x0.ifengimg.com\/res\/2020\/2EA263785943458911B110C5436D157D937B6A73_size31_w678_h381.jpeg","size":{"width":"640","height":"359"}},{"url":"http:\/\/d.ifengimg.com\/mw640_q100\/x0.ifengimg.com\/res\/2020\/BDE6BCA247DA9AA16AB069801C0D06D77EFE8D0B_size36_w680_h410.jpeg","size":{"width":"640","height":"385"}},{"url":"http:\/\/d.ifengimg.com\/mw640_q100\/x0.ifengimg.com\/res\/2020\/17678C1F45F0A4C740EA98E224FA0591B79103C0_size84_w678_h381.jpeg","size":{"width":"640","height":"359"}},{"url":"http:\/\/d.ifengimg.com\/mw640_q100\/x0.ifengimg.com\/res\/2020\/4C45C05465F1122DA0C68DE6EB0150305ABC7912_size32_w678_h314.jpeg","size":{"width":"640","height":"296"}},{"url":"http:\/\/d.ifengimg.com\/mw640_q100\/x0.ifengimg.com\/res\/2020\/78108116D514DD896F2479F7FDF16C13185B8155_size35_w678_h381.jpeg","size":{"width":"640","height":"359"}}],"summary":"去年下半年开始,使用LPDDR5内存的手机陆续发布。虽然用于电脑的DDR5内存与用于手机的LPDDR5并不相同,但这也让许多DIY玩家期待DDR5内存的到来,那","sharesummary":"去年下半年开始,使用LPDDR5内存的手机陆续发布。虽然用于电脑的DDR5内存与用于手机的LPDDR5并不相同,但这也让许多DIY玩家期待DDR5内存的到来,那","commentType":"0","wemediaEAccountId":"2417","showclient":"0","shareurl":"https:\/\/ishare.ifeng.com\/c\/s\/v002mU8fQkUUPaopuJHEi4KNuKCw4MZPmArT-_0RxeGUzgWU__","praise":"4","like_num":"4"}}