How to speed up a computer with 1GB or more memory?

The bigger the memory, the faster the machine? I think most people's answers are yes, the hints from 256M to 512M are obvious, so take it for granted, the improvement from 512M to 1G will be obvious. But I used my personal experience to tell you that 1G memory is slower than 512M, of course, the premise is that you do not set anything.

A few days ago, I extended my Compaq N410c to 1G memory, 2×512M pc133 SD. After the expansion, I found that the machine is not only the same as the original, but also has a long card, and the sleep time is longer. This is for sure. Hibernate is to copy the contents of the memory to the hard disk. The bigger the memory, the longer the sleep time will be. This makes me very depressed. Did I spend more than 500 to upgrade my machine, but it is more than the original? slow.

I use memstate software to monitor my memory situation in real time, I found that there are always more than 600 megabytes of free memory, which means that the machine's memory is very sufficient, and even many are wasted, but the machine Why are you still so slow? So I went to google to find the reason, and found that a lot of people have found this problem, and already have an authoritative explanation, here I extract the key parts, and share their own experience to share with you. Note: The modifications and usage methods here are for XP systems.

First, modify the registry to play a big memory advantage

Please open the registry editor now, find [HKEY_LOCAL_MACHINE\\System\\CurrentControlSet\\Control\\Session Manager\\Momory Management], in the right window Modify some key values, as follows (note that the premise of making settings is that the memory is better than 512MB, and only limited to Windows 2000/XP).

(1) "LargeSystemCache": Starts a large memory space in memory for prefetching of disk file systems. When the data requested by the program increases, Windows automatically reads ahead through the system cache, so that the program can get the required data as fast as possible. Since enabling this system buffer consumes more physical memory, the available physical memory that can be utilized by the program is reduced. Set its value to 1. In this way, the system cache is increased from 4MB to 8MB.

(2) "SecondLevelDataCache" (improving cpu performance): CPU processing speed is much greater than memory access speed, and memory is much faster than hard disk. In this way, between the CPU and the memory, the performance bottleneck is formed between the memory and the disk. The previous "LargeSystemCache" is designed to alleviate the memory and disk bottleneck, and the CPU is also set to obtain the processed data quickly from the memory. A buffer mechanism L2 Cache (secondary cache). Adjusting this key value will enable Windows to better match the CPU's use of the caching mechanism to achieve higher data prefetch hit rates. It is recommended to set it to 512.

(3)DisablePagingExecutive: Change its value to 1 (hexadecimal), which will force all programs and data to be forced to run in physical memory instead of using virtual memory. . Obviously, when there is enough physical memory to complete the required tasks (such as 1GB or more), this will greatly improve the system performance. Enabling it for users with only 128MB or less of memory may be a disaster - the system makes frequent mistakes until it crashes.

(4)"IOPageLockLimit": The input/output system is the channel for transferring data between the device and the microprocessor. When the buffer size is expanded, the data transfer will be smoother. In the same way, the size of the specific setting depends on the size of the physical memory and the number of running tasks. Generally speaking, if the memory has 64MB, the hexadecimal value of the double-byte key can be set to 400 (1MB), 800. (2MB) or 1000 (4MB) 128MB memory can be set to 1000 (4MB), 2000 (8MB) or 4000 (16MB); 256MB memory 4000 (16MB) or 8000 (32MB). Of course, if you have more memory, you can set it to 10000 (64MB) or more. When set to 0, Windows will automatically configure.

After setting these, restart the system. In fact, the effect of modifying these is not very obvious, but there is always a comfort in the psychological, the following is the place where you feel the qualitative leap.

Second, use virtual hard disk software

Here to introduce a software, RAMDisk Plus, this software is to divide a part of the memory as a disk partition, you can put some temporary Folders are transferred to this partition, such as IE's temporary folder, which will greatly improve the speed of your browsing. The gap between the transmission speed of the memory and the transmission speed of the hard disk I think everyone knows. Using a part of the memory for the hard disk is equivalent to adding a hard disk with hundreds of thousands of revolutions. The speed increase can be imagined. This is my personal experience, I took out 100M in my memory as a partition, and then moved the temporary folder of IE to the top. After restarting, it is a moment to open the webpage. Even before, the speed is very good. In the middle of the night, it is not so fast. It seems that many times the network speed is not a bottleneck, the machine is the bottleneck, especially those pages with more pictures and need to be cached. You can try it. After drawing out this 100M memory, my normal available memory is still above 500M. There is still a lot of space. Fortunately, RAMDISK plus can add multiple partitions. I can draw out several partitions and put some common programs. Going in, it will definitely be much faster to run.

But remember, after the memory is powered off, there is nothing inside, but fortunately, Ramdisk plus provides the option to automatically save the shutdown, that is, you can save the contents of the virtual hard disk partition when you shut down. The actual hard disk partition in the place you specify, and then load back when booting, almost the same as hibernation, but this will cause the shutdown time and boot time to become very long, so I recommend only temporarily on the virtual hard disk partition Files, anyway, the temporary files will be emptied sooner or later, and the ramdisk will also save the trouble of manual emptying.