https://www.knightli.com/tags/%E5%86%85%E5%AD%98%E6%9D%A1%E5%8C%BA%E5%88%86/ Recent content in 内存条区分 on KnightLi的博客 Hugo -- gohugo.io zh-cn Wed, 01 Jan 2025 00:00:00 +0000 https://www.knightli.com/2025/01/01/%E5%86%85%E5%AD%98%E6%9D%A1udimmsodimmrdimmlrdimmnvdimmecc%E5%A6%82%E4%BD%95%E5%8C%BA%E5%88%86/ Wed, 01 Jan 2025 00:00:00 +0000 https://www.knightli.com/2025/01/01/%E5%86%85%E5%AD%98%E6%9D%A1udimmsodimmrdimmlrdimmnvdimmecc%E5%A6%82%E4%BD%95%E5%8C%BA%E5%88%86/ <h2 id="内存条dimmsodimm的区分">内存条DIMM,SODIMM的区分 </h2><p>两种规格尺寸不同 DIMM用于服务器,台式机, SODIMM一般用于笔记本</p> <h3 id="sodimm">SODIMM </h3><p>SO-DIMM（Small Outline DIMM Module）的尺寸比标准的DIMM要小很多，而且引脚数也不相同。DDR3 SO-DIMM接口为204pin；DDR4 SO-DIMM接口为260pin。<br> <img src="https://www.knightli.com/2025/01/01/%E5%86%85%E5%AD%98%E6%9D%A1udimmsodimmrdimmlrdimmnvdimmecc%E5%A6%82%E4%BD%95%E5%8C%BA%E5%88%86/sodimm.webp" width="583" height="286" srcset="https://www.knightli.com/2025/01/01/%E5%86%85%E5%AD%98%E6%9D%A1udimmsodimmrdimmlrdimmnvdimmecc%E5%A6%82%E4%BD%95%E5%8C%BA%E5%88%86/sodimm_hu_60dbbb68b672a916.webp 480w, https://www.knightli.com/2025/01/01/%E5%86%85%E5%AD%98%E6%9D%A1udimmsodimmrdimmlrdimmnvdimmecc%E5%A6%82%E4%BD%95%E5%8C%BA%E5%88%86/sodimm_hu_4e8708d1540a5a2.webp 1024w" loading="lazy" class="gallery-image" data-flex-grow="203" data-flex-basis="489px" ><br> SO-DIMM 这种内存芯片数一般是4或者8的倍数</p> <p>有些高端工作站也会使用带有ECC功能的SODIMM<br> <img src="https://www.knightli.com/2025/01/01/%E5%86%85%E5%AD%98%E6%9D%A1udimmsodimmrdimmlrdimmnvdimmecc%E5%A6%82%E4%BD%95%E5%8C%BA%E5%88%86/sodimm-ecc.png" width="1024" height="445" srcset="https://www.knightli.com/2025/01/01/%E5%86%85%E5%AD%98%E6%9D%A1udimmsodimmrdimmlrdimmnvdimmecc%E5%A6%82%E4%BD%95%E5%8C%BA%E5%88%86/sodimm-ecc_hu_a7f782f246fd0171.png 480w, https://www.knightli.com/2025/01/01/%E5%86%85%E5%AD%98%E6%9D%A1udimmsodimmrdimmlrdimmnvdimmecc%E5%A6%82%E4%BD%95%E5%8C%BA%E5%88%86/sodimm-ecc_hu_1aae1074660961d9.png 1024w" loading="lazy" class="gallery-image" data-flex-grow="230" data-flex-basis="552px" ><br> ECC SO-DIMM 这种内存芯片数一般是9的倍数</p> <h3 id="dimm">DIMM </h3><p>可以分成UDIMM,RDIMM,LRDIMM,NVDIMM几种</p> <h4 id="udimm">UDIMM </h4><p>UDIMM：全称Unbuffered DIMM，即无缓冲双列直插内存模块，无寄存器.<br> 我们平时台式机的内存用的就是 不带ECC的 UDIMM, 即 Non-ECC DIMM. UDIMM无需经过寄存器芯片,所以延迟比较低,频率可以比较高,总容量较低,价格便宜<br> <img src="https://www.knightli.com/2025/01/01/%E5%86%85%E5%AD%98%E6%9D%A1udimmsodimmrdimmlrdimmnvdimmecc%E5%A6%82%E4%BD%95%E5%8C%BA%E5%88%86/udimm.jpg" width="886" height="249" srcset="https://www.knightli.com/2025/01/01/%E5%86%85%E5%AD%98%E6%9D%A1udimmsodimmrdimmlrdimmnvdimmecc%E5%A6%82%E4%BD%95%E5%8C%BA%E5%88%86/udimm_hu_1f3ca0745bd30e73.jpg 480w, https://www.knightli.com/2025/01/01/%E5%86%85%E5%AD%98%E6%9D%A1udimmsodimmrdimmlrdimmnvdimmecc%E5%A6%82%E4%BD%95%E5%8C%BA%E5%88%86/udimm_hu_61df502221fb48ee.jpg 1024w" loading="lazy" class="gallery-image" data-flex-grow="355" data-flex-basis="853px" ><br> SO-DIMM 这种内存芯片数一般是4或者8的倍数</p> <p>同时，一些高端台式机、高端笔记本电脑、服务器也会有带ECC（纠错内存）的UDIMM。<br> <img src="https://www.knightli.com/2025/01/01/%E5%86%85%E5%AD%98%E6%9D%A1udimmsodimmrdimmlrdimmnvdimmecc%E5%A6%82%E4%BD%95%E5%8C%BA%E5%88%86/udimm-ecc.webp" width="1024" height="241" srcset="https://www.knightli.com/2025/01/01/%E5%86%85%E5%AD%98%E6%9D%A1udimmsodimmrdimmlrdimmnvdimmecc%E5%A6%82%E4%BD%95%E5%8C%BA%E5%88%86/udimm-ecc_hu_54c64c78092c22ec.webp 480w, https://www.knightli.com/2025/01/01/%E5%86%85%E5%AD%98%E6%9D%A1udimmsodimmrdimmlrdimmnvdimmecc%E5%A6%82%E4%BD%95%E5%8C%BA%E5%88%86/udimm-ecc_hu_7b2a460b41f6ae1f.webp 1024w" loading="lazy" class="gallery-image" data-flex-grow="424" data-flex-basis="1019px" ><br> ECC SO-DIMM 这种内存芯片数一般是9的倍数</p> <h4 id="rdimm">RDIMM </h4><p>RDIMM：全称Registered DIMM，带寄存器的双列直插内存模块。RDIMM在内存条上加了一个寄存器进行传输，其位于CPU和内存颗粒之间，既减少了并行传输的距离，又保证并行传输的有效性。一般用在服务器端,可以插更多内存,提高总的内存容量. 但是会增加延迟,降低频率. 这种内存都会带ECC功能.<br> <img src="https://www.knightli.com/2025/01/01/%E5%86%85%E5%AD%98%E6%9D%A1udimmsodimmrdimmlrdimmnvdimmecc%E5%A6%82%E4%BD%95%E5%8C%BA%E5%88%86/rdimm-ecc.webp" width="844" height="291" srcset="https://www.knightli.com/2025/01/01/%E5%86%85%E5%AD%98%E6%9D%A1udimmsodimmrdimmlrdimmnvdimmecc%E5%A6%82%E4%BD%95%E5%8C%BA%E5%88%86/rdimm-ecc_hu_b649f64b04a40849.webp 480w, https://www.knightli.com/2025/01/01/%E5%86%85%E5%AD%98%E6%9D%A1udimmsodimmrdimmlrdimmnvdimmecc%E5%A6%82%E4%BD%95%E5%8C%BA%E5%88%86/rdimm-ecc_hu_59f3081ba7f73f92.webp 1024w" loading="lazy" class="gallery-image" data-flex-grow="290" data-flex-basis="696px" ></p> <h4 id="lrdimm">LRDIMM </h4><p>LRDIMM：全称Load Reduced DIMM，低负载双列直插内存模块。相比RDIMM，LRDIMM并未使用复杂寄存器，只是简单缓冲，缓冲降低了下层主板上的电力负载，但对内存性能几乎无影响。<br> 此外，LRDIMM内存将RDIMM内存上的Register芯片改为iMB(isolation Memory Buffer)内存隔离缓冲芯片，直接好处就是降低了内存总线负载，进一步提升内存支持容量。</p> <h4 id="nvdimm">NVDIMM </h4><p>NVDIMM (Non-Volatile DIMM)非易失性双列直插式内存模组， 是一种由DRAM、NAND和Controller组成的内存解决方案。<br> 在断电时，超级电容提供备份数据所需的电源。从而使存储在DRAM中的数据安全地转移到NAND。 NVDIMM的主要应用领域是服务器和存储，这两个领域对数据的安全性要求都很高。</p> <p>以下是美光的32GB DDR4 NVDIMM<br> <img src="https://www.knightli.com/2025/01/01/%E5%86%85%E5%AD%98%E6%9D%A1udimmsodimmrdimmlrdimmnvdimmecc%E5%A6%82%E4%BD%95%E5%8C%BA%E5%88%86/nvdimm.webp" width="1098" height="568" srcset="https://www.knightli.com/2025/01/01/%E5%86%85%E5%AD%98%E6%9D%A1udimmsodimmrdimmlrdimmnvdimmecc%E5%A6%82%E4%BD%95%E5%8C%BA%E5%88%86/nvdimm_hu_5044c1a1e0c8236a.webp 480w, https://www.knightli.com/2025/01/01/%E5%86%85%E5%AD%98%E6%9D%A1udimmsodimmrdimmlrdimmnvdimmecc%E5%A6%82%E4%BD%95%E5%8C%BA%E5%88%86/nvdimm_hu_8b0bb65e2d234ccb.webp 1024w" loading="lazy" class="gallery-image" data-flex-grow="193" data-flex-basis="463px" ></p>