Question

CQ45-147TX机内的内存条有几根啊？我想升4G

因为我装的VISTA系统嘛，如果想让这个系统运行得好些，那我要不要加内存呢？

Answer 1

一片英文文章，可以参考一下，从一无所有论坛上看到的：
Four Gigabytes is a lot of RAM for a workstation or gaming machine, but the industry has pretty much forced us into using this much (especially if you're a heavy user of Virtual PC). Most applications today are 32-bit and only address 2GB of RAM at a time (like Photoshop), but we need more memory for all the other running goodies that are memory-starved. Even though Vista runs on 1GB of RAM, 2GB is alot better, and 4GB will unleash its potential.

Unfortunately, users of the 32-bit flavors of Vista have to run through some hoops to see all of the new RAM they've upgraded to. Even then, they may not see all of the RAM available because of various hardware issues. This article addresses various methods so you can utilize that massive amount of memory.

All 32-bit Operating Systems can only physically address 4 gigabytes of RAM, due to the math involved (232 = 4,294,967,296). Depending on your hardware, Vista may only see 3GB or 3.5GB of the total RAM installed, because there are some devices that are memory mapped. The most common culpret of this type of device is a video card, which can use up to 512MB of memory for mapping.

Enable PAE mode
You can tweak Vista's core to add another 4-bits of addressing capability, but you must have a 64-bit capable processor (pretty much any processor made within the past two years like Intel's Core 2 Duo or AMD's Athlon 64). Even though the math works out to address way more than 4GB (236 = 68,719,476,736), the operating system still has a cap (Windows Server can address anywhere from 8GB to 128GB depending on the flavor).

To force this new addressing method, you have to tell Vista to boot using this new parameter. Vista no longer uses a BOOT.INI file as previous versions of Windows did, so you must modify the boot file using a built-in Vista tool called BCDedit.
1. Open a command prompt (Press Window key + R to open the Run dialog, and then type cmd).
2. Press Ctrl + Shift + Enter to execute (this allows you to run cmd in administrative mode if you haven't already setup up a permanent admin mode).
3. Type BCDedit /set PAE forceenable.
This PAE flag (Physical Address Extension) tells the Vista core to use an additional 4 bits of addressing, which in theory allows the OS to see all of the RAM you have available. We're not out of the woods yet, because once you reboot you may find that Vista still doesn't see all of your RAM. You can turn PAE off again by typing BCDedit /set PAE forcedisable or BCDedit /set PAE default.

Enable DEP mode
Also note that using PAE forces Vista to run theoretically slower, so you need to disable this feature if you go back to a lower amount of RAM. Vista runs slower with PAE because of the new page-translation system being used. By default Vista uses 2 cycles to address memory, and will use 3 when Physicall Address Extension is enabled. PAE also supports advanced procesor features such as Data Execution Prevention (no execute), Non-Uniform Memory Architecture (NUMA), and hot-add memory. PAE is automatically disabled when DEP (Data Execution Prevention) is disabled, so you must force PAE when DEP is disabled by running BCDedit again:
1. Open a command prompt (Press Window key + R to open the Run dialog, and then type cmd).
2. Press Ctrl + Shift + Enter to execute (this allows you to run cmd in administrative mode if you haven't already setup up a permanent admin mode).
3. Type BCDedit /set nx AlwaysOff
4. Type BCDedit /set pae ForceEnable
You can disable DEP by typing BCDedit /set nx AlwaysOn

我随便翻译了一下，如下：
对于工作站和游戏机来说，4g内存已经非常大了，但是工业技术的发展迫使我们不得不使用这么大的内存（尤其是你是一个大型虚拟PC的用户）。现在大部分应用程序是32位的，只能寻址到2g内存（像是Photoshop），但是我们的确需要更多的内存来喂饱那些贪婪的吞噬内存的程序。即使Vista可以在1g内存上运行，但是2g会更好一些，而4g将充分释放出它的潜力。
不幸的是，喜欢32位Vista的用户不得不扫清一些障碍才能看到所有升级的内存。即便如此，由于一些硬件的问题，他们可能也无法看到所有可使用的内存。这篇文章描述了一些可以使你使用更多内存的方法。
所有的32位操作系统最大只能寻址4g的物理内存，因为32位空间只能标识这么多（2^32=4,294,967,296）。根据你的硬件情况的不同，Vista可能只能使用3g或者3.5g的内存空间，因为某些设备会通过映射占有一些内存编址空间。这类设备中最常见的是显卡，它可能会映射掉512m的内存（一般可以在BIOS里面修改这种映射空间的大小）。
打开PAE模式
你可以强迫Vista内核增加4位寻址能力，但是首先你必须有一个64位处理器（近两年来新发布的处理器差不多都行，像是intel Core 2 Duo或者AMD Athlon 64）。即使寻址空间定义已经够了（2^36=68,719,476,736），但是还得给操作系统摘掉一顶帽子才能让它睁开眼睛好好看看内存（Windows Server不受任何限制，只要你自己愿意设置，它可以寻址8g到128g的范围）
为了强迫系统使用这种新的内存寻址模式，你必须自己告诉Vista才行，这需要在启动的时候增加一个新的参数。与以前的windows版本不同，Vista不再使用一个Boot.ini文件，所以你必须使用Vista内建的一个工具BCDedit来修改启动文件：
1. 打开命令行工作界面（按键盘上的windows徽标键+R打开运行对话框，输入cmd，回车）
2. 按Ctrl + Shift + Enter组合键（这样做是为了将你的cmd切换到管理员模式下运行，尤其是当你没有设置一个永久性的管理模式时）
3. 输入BCDedit /set PAE forceenable，回车。
PAE标识（物理寻址扩展）告诉Vista内核使用附加的4位寻址空间，理论上来说，这可以让操作系统观察到你安装的所有内存。但是，到此为止，我们仍然是个榆木疙瘩（傻蛋或者蠢驴），因为当你重启之后会发现，Vista仍然没有检索到你所有的内存。（注意：你可以通过输入BCDedit /set PAE forcedisable 或者BCDedit /set PAE default来关闭PAE模式）。
打开DEP模式
也许你同时已经注意到强迫Vista使用PAE模式理论上来说会运行的更慢，所以当你减少内存的时候应该再关闭这一模式。Vista在PAE模式下运行的会更慢，这是因为它需要使用新的页面翻译/转换系统。默认情况下，Vista对内存寻址需要两个阶段（寻址到虚拟地址表取出物理地址，再根据物理地址寻址到实际所需数据），但是当使用PAE模式时，需要3个阶段（增加一个扩展地址表的寻址）。PAE也支持一些高级的处理器特征如数据执行阻断（DEP），非一致内存架构（NUMA）等。当DEP被禁用时，PAE也会自动被禁用。所以你必须同时打开DEP，PAE才会运行。再次运行BCDedit：
1. 打开命令行工作界面（按键盘上的windows徽标键+R打开运行对话框，输入cmd，回车）
2. 按Ctrl + Shift + Enter组合键（这样做是为了将你的cmd切换到管理员模式下运行，尤其是当你没有设置一个永久性的管理模式时）
3. 输入BCDedit /set nx AlwaysOff，回车
4. 输入BCDedit /set PAE forceenable，回车。
（注意：你可以通过键入BCDedit /set nx AlwaysOn关闭DEP）。

Answer 2

下载一个CPU-Z检测一下就知道了 至少有两根内存插槽
32BIT对4G内存支持不完美 如果不用64位系统可以升级位1G+2G组建双通道
这个机器标配就是2G内存吧 我一直用着2G内存+Win7 很少有内存不够用的情况(主要是跑虚拟机) 我觉得2G内存如果没有特殊要求应该勾勒,如果要运行一些比较吃内存的游戏,那可以升级内存
具体看你有什么需求了

Answer 3

呵呵不能盲目升内存,内存升太大,而cPU顶不住也不行,不但影响速度,电脑主板会受伤害,