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I have an old computer which is running very slow. Normally, it works fine but sometimes it become too slow to handle. Whenever I open 9-10 tabs in firefox or runs multiple softwares (average-to-medium-heavy designing applications), it goes unbearably slow. Firefox goes 'not responding', all applications goes 'not responding'. In fact, when I use firefox (with 3-4 tabs open) along with Microsoft Word and leave the computer running idle for 30 minutes and comes back and wake it up, even then both applications (or any other application, if running) goes 'not responding' one-by-one or together. It also happens if I watch any kind of video for more than 5 minutes.

It is Dual-core processor @ 2.7 GHz with only 1 GB of DDR2 800 MHz RAM running on Windows 7 Ultimate (64-bit). Motherboard is Intel 965 Express Chipset Family. Usually, RAM usage goes to 90-95%+ and CPU usage remains at 10-20% and goes at a maximum of 60-70% while opening of a software, etc. Computer never hangs up and complete all the tasks it received, but just very slowly.

Now, I know that a minimum of 2 GB RAM is required on Windows 7, but now as the processor is also old, so I am confused here whether upgrading RAM will have any effect on its speed of handling processes or not. I do not play any games, so heavy duty processor is already not required to me. Still, I would think to change it, if required or suggested here.

Hence, could anyone please help me understand whether to further enhance RAM or just change the whole CPU to speed up my system.

I have tried to mention all the details I know. If there is any more questions, please feel free to ask.

An early advise is highly appreciated.

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These days, 4GBs of RAM is the lowest I would go. Look for your model at and see if it can support that much and upgrade if you want the computer to be usable--assuming everything else is working normally and the hard drive is still good, upgrading the RAM will show a drastic improvement in performance. 


Is this one of those Netbooks that were a fad several years ago? If so, I would not bother upgrading. 

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