4G memory, why does windowsXP only recognize 3 25G?

To use a 64-bit system, such as 64-bit XP, Vista, 7.

It is due to the fact that B to KB to M and finally to G are not the same conversion standards. I've had this problem too!

The main reason is that the computer did not consider that it would use such a large memory in the past, and the 32-bit XP could only retrieve 2 32 = 4G space by nature, but because it did not expect to use such a large memory in the past, the design BIOS defined some space addresses within 4G as the interface of the device. In the end, XP can only use approximate memory.

There is an English version of the 64-bit XP.

It is a limitation of the system and needs to be patched readyfor4gb

The 32-bit operating system can only manage memory, as for why it is designed, then you have to ask Microsoft.

Now Windows 7 system has been rolled out,There is a tendency to replace XP,There is now ** on the Internet,Windows 7 has a 64-bit version,You** can manage more than 4G memory after this。

The graphics card occupies 1 part and the second is to look at the maximum support of the motherboard.

WinXP is a 32-bit system, and you have to use a 64-bit operating system to recognize more than 4GB of RAM such as Win7 Vista

WinXP4G memory system, memory detected only, lost, what is the situation? The following is my introduction to WinXP4G memory display only, welcome to read.

WinXP4G memory shows only the case

Guess the brother 1, 32-bit system, the highest can only be recognized. If you want to recognize them all, you need to use a 64-bit system.

2,Recognize 4G and use enough 4GSHI two concepts In the case of not enabling the 64-bit system or SHI server version of the system, you can basically only glance at the third-party technology or software and virtualize into a hard disk SHI is the simplest and most direct way And this is unrecognizable It will not affect the dual-channel just can't be used If you just recognize 4G 32-bit win7 can be 8G can be 3500 yuan computer configuration.

3. If you install 4G, you should change to a 64-bit system, otherwise you won't spend money in vain? It is recommended that you install x64 win7. I used a 64-bit system, and a lot of times I had to install 64-bit software, why is my computer very stuck. Such as 3D PS and so on.

4. The first is cracked with software, and the second is with a 64 system.

There is also a situation when the memory is expanded to 4G. But the computer still doesn't show that 4G memory can be used? Is it because of the memory itself or is it a system issue? All kinds of problems are entangled in the hearts of students.

Why 4G memory can't be fully used on 32-bit systems

The XP 32 is theoretically capable of up to 4G of RAM, but in practice it cannot use the full 4G RAM. Microsoft's official statement is that the XP Vista 32bit will allocate some of the memory as a memory address reserved by the device after installing 4G memory. Therefore, only 3G to varying memory capacity can be seen in the system properties, and the remaining part is not useless but seized by the system, and the user cannot use it directly.

Moreover, the 32-bit chaotic XP Vista also does not allow a single program to occupy more than 3GB of memory, which is a characteristic of the system kernel.

If you want to support 4G memory, the best and easiest way is to change the operating system, XP 64-bit, Win 7 64-bit, or Win 2003 (Win 2003 is a server operating system) can all support 4G RAM or larger. Although there are many patches on the Internet that can crack the XP 32-bit memory limit, which can show more than 4G memory, however, after actual testing, the cracking of most models is just a number game, and the spike can only be displayed, not actually called.

It's not that XP can eventually recognize 3 points of more G, but 32-bit XP can only recognize so much, including 32-bit Vista, 64-bit is completely OK.

Here's why: You may find a very strange phenomenon, in our Windows XP and Vista, after installing 4GB memory, only left and right or even less are displayed, and more than 800MB of memory disappears "for no reason", which makes people feel very puzzling, the reason why the motherboard and operating system can't use all the 4GB memory, the root of the problem is the computer's 32-bit x86 architecture. The 32-bit x86 architecture means that the address bus of the personal computer is 32-bit, and the CPU, memory controller, and operating system are all designed according to the 32-bit address bus. The memory address ** that the 32-bit address bus can support is 4096MB, that is, there are 4GB addresses**, and 4GB addresses can be programmed.

These 4GB address codes can be allocated exactly 4GB of memory. However, these 4GB address codes cannot be allotted to the physical memory installed on the motherboard. Because there are many devices in the personal computer that need addresses** so that the CPU can find them based on the address code, and at the same time, the CPU and these devices exchange data with the memory that temporarily holds the data - registers, and these registers also need addresses**.

For example, hard disk controllers, floppy drive controllers, PCI bus controllers that manage PCI cards plugged into the PCI slot, PCI-E bus controllers, and PCI-E graphics cards, all of which all have registers that need to be assigned to them by the system. These addresses are assigned by the system and are not perceived by the computer user during use. As a result, when we plug in a total of 4GB of memory into our computer, some of the memory will not be allocated an address** and cannot be used. Reference.

32-bit systems don't recognize 4GB of memory, which is a system addressing problem, such as XP, Vista, and Win7. The specific reason for this is very clear. In addition, the average motherboard only has 4 memory slots, and now the maximum memory module is generally 2GB, so the maximum installation is 8GB.

In addition, it is known that various civilian programs and large-scale games require only 4GB, so what is the use of installing 10GB.

xp ，win 7 ..All 32-bit operating systems! The 64-bit operating system can support 4G, 8GB no problem.

32-bit systems use up to 2 to the power of 32 memory, and 64-bit systems use 2 to the power of 64. A 32-bit XP plug with 10G is a waste.

Nothing like that! If so, XP is officially closed! Those merchants and programmers don't have computers!

Yes, the maximum capacity of WinXP32 bit is 4GYou're fine with a 64-bit system.

It's not XP, but all 32-bit systems, including win732-bit, vista32-bit, can only be supported, more than part to be implemented through special expansion or divided left virtual memory, troublesome, not recommended. If you have a 64-bit system, you won't have a problem. At present, it is still 2G memory that is more cost-effective.

4G is enough for normal games. If you want to experience a more refreshing feeling, go to 8G of memory and disable the default virtual memory of the system. Multi-memory is very useful for multi-opening games like online games.

Motherboards are now compatible with up to 4G of RAM.

It's good that you don't want to use WinXP system. There are other systems ...

It depends on how much memory the motherboard supports, and it has nothing to do with the system.

First of all, it is believed that a large percentage of those who choose 64-bit Windows 7 have more than or equal to 4GB of RAM. Under 32-bit Windows 7, memory may be displayed available, which upsets a lot of people. That's right, addressable memory space is indeed the most notable feature of 32-bit Windows 7 and 64-bit Windows 7.

The 32-bit CPU (to be precise, the CPU running in 32-bit mode) can only address the maximum 4GB of memory, subject to this, the 32-bit operating system can only recognize the maximum 4GB of memory, because in the system, in addition to memory, there are many storage devices, therefore, the real memory space that can be used must be less than 4GB, which is what we see in the system properties.

However, the 64-bit CPU has changed a lot, and the maximum addressing space of the 64-bit CPU is 2 to the 64th power, and its addressable space reaches a staggering 16 terabytes (treabytes), or 16,384 GB. Of course, this is just a theory, from the practical application, Windows 7 64bit versions are 8GB-192GB, of which, the home normal version can support 8GB memory, the home premium version can support 16GB memory, and the 64-bit Windows 7 professional, enterprise and flagship versions can support up to 192GB memory.

In other words, users with 4GB or more memory cannot maximize the use of hardware resources due to the limitation of 32-bit hardware, which makes it necessary to install a 64-bit operating system to maximize the use of resources.

It should be noted that 64-bit systems require 64-bit CPU support, please confirm whether your CPU supports 64-bit before installing 64-bit Windows 7, generally speaking, CPUs purchased after 2006 support 64-bit mode.

If you only consider this, for users with less than 4GB of memory, 32-bit Windows 7 is more suitable for everyone, because the 64-bit version will take up more system memory resources, which is counterproductive.

There is no way, the most that 32-bit systems support for memory is.

If you want to use it all, you can only use a 64-bit system.

There's a patch that allows your computer to recognize 4G, but it's still available.

This is a flaw in the design of WinXP itself, and it cannot be said that it is a 32-bit problem. Win2000 does not have 64 bits, but DataCenter Edition can manage 32G memory.

The 32-bit XP theoretically says that the memory management can reach 4G, but in fact it can't be reached, because the address of the hardware occupies the first part of the address of the memory management, in the device manager, select View - sort the resources according to the connection, you can see what motherboard, PCI and the like have to have an address, these addresses encroach on the address of the memory, resulting in some memory without address available and unable to manage. If 32-bit XP can add 64-bit memory management capabilities, this will not be a problem, it is a bit like hard disk management, the system is 32 bits, but the disk management is 48 bits or higher (otherwise there will be a 137G upper limit).Due to the different hardware, each computer will look different in terms of memory capacity.

Because the situation of address occupancy is different.

If you only use 4G memory, you can use win2003, I am now, the standard version can manage 4G memory very well, but larger capacity is not good, you may have to use 32-bit server version or 64-bit. Of course, XP also has 64 bits. Or use win7 8

This is quite normal, since XP is a 32-bit system, it can only recognize about 3 GB of memory.

If you want full recognition, then upgrade the system to a W7 64-bit system.

It's normal,There will be a part of the system inside this that you can't see.,It's the same as the hard disk doesn't have so many labels.,Mine is 6GB of display available.。

The 32-bit system can only recognize the memory, and the extra part of the motherboard can be controlled, but the system can't control it, and it is directly ignored by the system. That is to say, there is no physical existence, but there is no longer a logical existence.

The 32-bit system only recognizes 3G of memory, and yours is already very good. It's a new motherboard. Motherboards from previous years were recognized at best.

The XP system does not support 4G memory, which is a hard flaw. To support your 4G RAM, you can only choose a 64-bit system with Windows 7 installed. Note that it's 64-bit, not 32-bit.

Microsoft's limitations.

A 64-bit system is required, and your computer may not support a 64-bit system.

A 32-bit system can only recognize that much memory.

Or else you're having integrated graphics?

32-bit systems only support 3G memory ......