作者：大玉山庄
经过前两次在海鲜市场购买戴尔小主机3050SFF与微型机3050MFF主机，因为都是找的个人卖家，目前使用一切正常。现在逛海鲜市场确实是比往任何时候要耐心了，因为碰上一个好的个人卖家真的还需运气。逛的时候不是商家就是传家宝级别的。稍微的不注意，可能买来的比新的市场价还贵。
这次口罩期间，学校时不时停课，所以想在老家里面再弄一台电脑，毕竟手上有台多余的笔记本，虽说屏幕15.6寸。但还是觉得小了点。所以想再买过一台台式机。虽然手上有戴尔3050SFF与3050MFF，但是使用过微型机后，觉得这微型机放桌面还是小巧不占地方，再买一台微型机往老家放就好了，这方向确定下来了，就挑戴尔微型机MFF买。
个人需求：
1.主打需求： 主机上上网页，主要是看视频。
2.手上有条DDR4 4G内存条，I5 6500一颗，SATA接口120G固态一个，有一台21寸1080显示器。
3.品牌还是选择戴尔。预算最终完成时尽量不超出六百块。
按上面的需求经过查找对比，支持六代七代标压的处理器微型机就7040MFF,7050MFF。再高的就是价格问题了。如果找不到合适的微型机，就只能选择小型主机SFF了。
经过几天的功夫，看到上海一商家卖7040SFF准系统，价格在289元不包邮，3050MFF 准系统价格269元不包邮。看图片虽说是商家但看大众评价也不错。
戴尔SFF是直接上标压的，所以还是放在起对比一下。
最后浏览了许久还是逛到一家私人卖家在卖7050MFF，看信用应该还不错，所以联系了一下。回复倒是挺快的。页面介绍简短。就一标压系统，带2个130瓦电源。价格460元。经过沟通谈好价格就定下来了。
重提一下准系统大概定义（摘自网络说法）：准系统严格来说不是一个操作系统，而是一个主机系统，可以看作是一台半成品电脑，一般里面没有CPU、内存和硬盘。
但是海鲜市场的准系统就没有那么统一了，有些给标明：没有CPU、内存和硬盘。有些标出没有CPU、内存和硬盘，电源，无线网卡等等。只能购买时一定要问清楚。免得自己买回来一直是半成品，再组装起来价格就没有那么香了。
刚好与卖家谈后价格，减了80块钱，刚开始不同意。后面说两个电源就不送了，我猜想了一下，要是没有电源适配器那我不是还要买电源适配器，就没有戴尔3050SFF那主机价格269元来的香了，不过最后还是同意送电源了。
接下来也上戴尔官网查了一下该戴尔7050MFF的机身服务编号，并了解了一下这个主机支持的基本状况：
看到上面的文件就知道，这个7050MFF微型机并不是国行机子。是日本发行的。
原机规格：CPU 英特尔酷睿 i7-6700 （QC/8MB/8T/3.4GHz/65W）
电源：130W 125V
内存：16GB (2x8GB) DDR4
原机是不带无线网卡。不过这三大件早就不见踪影了，就看主板是否原装了。130W的电源也是卖家后面购入。
这次也顺便了解学习一下无线网卡的接线问题：
原来桌面上的3050MFF，买的无线网卡也不是原装天线，就是无线网卡与天线是一起。其实一开始也不知道哪根线接哪一根，因为有两根延长天线，一根内置，一根外置。
现在终于明白这两根天线接法：刚好卖家一般卖的是两根外置天线。而微型机MFF只有一个外置天线接口，有条内置天线。
main是主天线，一般为白色或者灰色，aux是辅助天线，一般为黑色。
稍候看一下卖家发过的货品怎么样？
11月17日下午就收到了这货。也送了几天，价格便宜肯定不是顺丰，反正不急就让它慢悠悠的送来。
我原来入手的戴尔3050MFF倒是挺轻的，这个可能加了两个电源的缘故吧。
估计这个卖家也是在商家那里买的，这张黄色标签内容：已经测试调效好了改BIOS先询老板，私自撕毁标签不保。
第一眼的感觉像9成9新，也不知道是卖家清理过还是原来的商家处理过，戴尔的主机拆机就是便捷。
看到主板型号心放下一半了，至少支持标压没有错了。
下面还是用湿巾给清洁一遍。
总结
这一次也安全下车了，购入这款戴尔7050MFF，主要是看中能上标压CPU也可以上低压款CPU，选择方面宽一些，如果是整机购买，海鲜市场价格还是挺高的，除非机会很好真看到有人淘汰换新机。口袋有钱上现在的十二代处理器的戴尔3000MFF也很不错，I3处理器不要内存硬盘应该在2100块左右，自己再加装也挺好。
这台主机到手，估计就暂时不考虑再装电脑了，至少两三年内不用再换了。不过刚刚试了一下系统，SATA接口的固态硬盘启动速度还是比不过M2固态硬盘。又准备在京东商城下单买固态与内存更换。下篇货到手继续折腾。祝各位生活愉快！
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