将iMac Intel Core i3 CPU升级到Core i7

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Upgrade mid 2010 27 inch Apple iMac from a '''Core i3''' 3.2GHz (Dual core) to '''Core i7''' 2.93GHz (Quad core) processor.

I used this guide for disassembly and reassembly.

http://www.btobey.com/learn/imac-ssd-install.php

Also added a 3TB SATA drive and 32Gb of RAM to max out this system under Lion 10.7

* Update : Removed the 3Tb SATA drive and replaced with 512Gb SSD and upgraded to Mountain Lion 10.8
* If you upgrade or change the HD, you will need to buy HDDFanControl software to control the HDD fan which will run at full speed otherwise.
* April 2013 - 1 year later : This system has been absolutely ROCK SOLID with no crashes, no kernel panics and no freezes!
* April 2014 - 2 years later : now running OS X 10.9 Mavericks successfully with zero issues. System continues to be fast - but is starting to show its age compared to Sandy Bridge, Ivy Bridge and Haswell architectures! Newer apps are starting to creak at the seams & the beachball is now a fixture.
* April 2015 - 3 years later. Yosemite 10.10.3. Continuity works but Handoff does not (lacks built-in Bluetooth LE v4.0). Not as fast as my Haswell Macbook Pro or 2010 Xeon 12 proc Mac Pro, but still rock solid. With these simple mods, I have gained years of additional service out of this "obsolete" machine!
* May 2016 - 4 years later. Running El Capitan 10.11.5 . Only Handoff does not work (see above) but everything else is rock solid. New Notepad app rocks as does a stable version of Apple Mail (at last), and now that the abomination that was 'discoveryd' is dead and the tried and true 'mDNS-Responder' is back, networking is stellar once again. The system continues to amaze with its longevity.
* August 2016 - 4+ years later. Now running Sierra 10.12 Beta 2 with zero issues other than the usual beta bugs.
* November 2017 -  It’s been 5 years since I did the upgrade and I still use this iMac in anger every day! Now running a OWC 1TB SSD and High Sierra 10.13 with APFS. Machine has been absolutely flawless!
* September 2018 - It’s been 6 years, yes SIX years! since I did the upgrade and I still use this iMac in anger every day! Now running Mojave 10.14 with APFS, using Dosdude's Mojave Patcher. Please note - this 2010 iMac (11,3) built in video card is *NOT* Metal compatible so video acceleration  is DISABLED with Mojave which makes your iMac screen refresh sluggish, Photos to go black and other graphics anomalies but everything else is stellar. Dark Mode makes the upgrade worth it.
* Don’t install Mojave or Catalina on this machine. It will barely run and the experience is terrible. This quote is from DosDude1 himself:  “Radeon HD 5xxx and 6xxx series video cards are not, and most likely never will be, supported under Mojave or later.“
* March 2019 - I have abandoned using Mojave 10.14 on this 2010 27” iMac. The slow GPU makes it completely unusable. I’m back to High Sierra 10.13 with APFS, 1TB internal SSD and 32Gb RAM. This appears to be my optimal configuration for this 2010 27” iMac

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iMac27英寸（2010年，中期）从“Core i3”的3.2GHz（双核）到“Core i7”的2.93GHz（四核）处理器。

我按照本指南进行拆卸和重新组装。

http://www.btobey.com/learn/imac-ssd-install.php

还添加了3TB容量的SATA驱动器和32Gb的RAM，以最大限度地在Lion 10.7下的该系统

* 更新：拆除3Tb SATA驱动器，并更换为512Gb SSD并将系统升级到Mountain Lion 10.8
* 如果您升级或更改硬盘，您将需要购买HDDFanControl软件来控制全速运行的HDD风扇。

* 2013年4月 - 1年之后：该系统绝对是很耐操的，没有崩溃，没有内核崩溃，没有死机！

* 2014年4月 - 2年之后：现在运行OS X 10.9  MaveRicks完美无问题。系统仍然很快 - 但与Sandy Bridge，Ivy Bridge和Haswell架构相比，开始显示出其较老的事实！较新的应用程序开始在各种奇奇怪怪的地方卡BUG，BeachBall现在基本不能用了。

* 2015年4月 - 3年后。优胜美地10.10.3。连续性工作，但切换不（缺乏内置蓝牙LE v4.0）。不如我的Haswell Macbook Pro或2010 Xeon 12 proc Mac Pro那么快，但仍然坚如磐石。有了这些简单的mods，我已经从这个“过时”的机器获得了多年的额外服务！

* 2016年5月 - 4年后。运行El Capitan 10.11.5。只有切换不起作用（见上文），但其他一切都是坚实的。新的记事本应用程序与Apple Mail的稳定版本（最后）一样，现在，“discoveryd”的憎恶现在已经死了，而且被试和真正的“mDNS-Responder”已经回来了，网络再次辉煌。该系统长期以来一直令人无可挑剔。

* 2016年8月 - 4年以上。现在运行Sierra 10.12 Beta 2，除了通常的测试版错误以外没有问题。

* 2017年11月 - 从升级到现在已经有5年的时间了，我仍然每天都用这个 iMac！ 现在使用 APFS 运行 OWC 1TB SSD 和 High Sierra 10.13。 机器绝对完美无瑕！

* 不要在这台机器上安装Mojave或Catalina系统。它几乎无法运行，体验非常糟糕。这是DosDude1本人的原话：“Radeon HD 5xxx和6xxx系列显卡在Mojave及更高版本中没有支持，而且很可能也不会支持。”

* 2019年3月 - 我放弃了在这台2010年的27英寸iMac上使用Mojave 10.14。缓慢的GPU使它完全无法使用。我又回到了High Sierra 10.13，采用APFS文件系统、1TB内置SSD和32GB内存。这看起来是2010年27英寸iMac的最佳配置。

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