pc very slow with 4 gigs of memory

March 23, 2009 at 10:24:08
Specs: Windows Vista
i recently upgraded my memory to four gigs from 2.i find that my pc is slower now that i put more memory.my programs are costantly hanging i have dual core 64 bit amd anthlon with 4 gigs nvidia graphics cardand a 500 gig hd.as of yesterday i noticed that my typing is sliggish also .sometimes my sentences dont even get completed,can anyone sterr me in the right direction as to a solution

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March 23, 2009 at 11:01:02
First of all can you see any POST screens prior to the Windows splach screen? If not then boot into the BIOS (setup) screens and disable fast boot and all logos.

Now, watch the POST screens to see how much RAM is being identified by the BIOS. Post back with the answer.

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March 23, 2009 at 13:32:27
If your programs weren't starving for memory when you had just 2GB, there will be little or no performance difference with 4GB. Your performance should not have decreased though. Test your RAM with memtest86.


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March 23, 2009 at 13:51:48
If you have a 32 bit version of Vista, your system may run noticably better with 3gb instead of 4gb.

32 bit XP and Vista have a 4gb virtual (memory) address limit - for both what the ram needs and what Windows itself needs.

You end up with a situation where only a bit more or a bit LESS than 3gb of the ram is actually being used, depending on the system, when you install 4gb.

e.g. On a friend's system with an Asus M3A78-EMH HDMI mboard, XP Home, and a Sapphire 4850 PCI-E X16 video card, I tried both 3gb and 4gb in it - it has MORE available memory in System Information when 3gb is installed, and Windows runs very noticably better with 3gb.

You probably are not using any program that needs 4gb in any case.
Ultimate Memory Guide
How Much Memory Do You Need? etc.

Lots of things can cause Windows to slow down. Your comparison is only valid if absolutely nothing else was changed.

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