8GB or so should be good. 4GB is what a 32-bit system should have.
As much as possible. Find out how much your machine will allow and fill it up.
I would add the memory proportional to cpu and disk and what you intend to do with the computer not necessarily because it is 64 bit...
At least 8 GB. More if you want to keep your computer for many years longer.
It depends on which operating system you are using. Windows XP 64 bit will do good with 2GB of RAM. While the latest OS like Windows 7 and Windows 8 it is recommended to use at least 4GB of RAM.
I'm sure 4GB would be fine, but with ram as cheap as it is I'd go as high as your wallet will allow. I run 8GB DDR3 1333 in my machine and it was less than $50 I believe. So you can probably find 16GB for around $80-90. Like I say though it all depends on what your willing to spend, which is why I only have 8GB .
I agree with Jacksmack, but you also need to check your system to determine the maximum supported RAM. There are still a lot of laptops on the market that will only support 8GB so be sure to check.
I'm using 64 bit Windows 7 operating system and it is working fine for me. BTW system has 4GB RAM.
I've got 4GB RAM on my 64-bit Windows system too, and it seems sufficient, but as my HDD fills up, the system is slowing down, so a RAM upgrade might be in order.
I remember when 16MB of RAM was a lot! lol
Computers are sufficient for about 4Gb of RAM. Having more does not benefit a 64bit system. In fact having a large amount of RAM is rather useless and doesn't really speed up your computer beyond having 4GB.
Only two types of programs would benefit from having 2.5GB or more RAM for a program and that is software designed for video editing and software for audio processing.
What more ram does is allow you to open more programs at the same time without the system using the hard-drive for memory.
There are more than two types of programs that benefit from more Ram. All adobe products for example need large amounts of memory. Especially Photoshop.
In general I would say as much as your computers motherboard will let you. With putting in a much as your computer will let you, will enable you to use more programs at the same time and besides some programs are memory hunger. If you like me you have a window open and then another and another and so, over a short time you are using a far amount of memory and before you know it your computers memory is running low
Memory limits for windows 7, 64 bit
Home Basic: 8GB
Home Premium: 16GB
I would recommend at least 4 GB of RAM to really be comfortable. My Macbook Air now has 4 and I can't tell the difference between it and my old computer that has TWELVE.
Most of the memory size depend largely on the data bus and the CPU speed. Normally data buses and CPU speeds are compatible in all systems. This is because the CPU socket comes with the motherboard and the mobo manufacturers build them both to specifications that will allow them to work well. In addition they build data buses to transfer data from the CPU to the memory and other components and vice versa. Mobo manufacturers therefore recommend certain amount of memory to be installed on a particular mobo. It may do you no good if you overload your computer with memory. This cause conflicts as well. The best thing to do is to find out how much memory the mobo manufacturer specified and fill it up.
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