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4gb ram (3gb useable)...why

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Hi All,

Just a niggle so not too important.

I have a old laptop, an Emachines E625.

The spec is:


Intel Athlon 64 TF-20 / 1.6 GHz
  • Cache
    L2 - 512 KB
  • 64-bit Computing
  • Chipset Type
    AMD M690V

I have loaded Win7 Ultimate 64bit on it.


It did have 3gb of RAM in it, (a 1gb and a 2gb) and when it did it told me that I had 3gb RAM (2.75 useable)

All the specs I have looked at for the E625 says I can use up to 4gb in the machine.

I had two of these old machines around with another 2gb stick in it, so I decided to put the second 2gb in the one I am using, giving me 4gb.

Booted no problem, but now tells me that I have 4gb (3gb useable)

Before something was using 0.25 of the RAM. Now it seems to be using a full 1gb.

Anyone know what is going on?


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    Mechanised Mod

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Hello BR34095,


Run Process Explorer to see what is using the memory, see here



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    Mechanised Mod

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Not heard back from you BR34095, do you still require assistance or is the issue now resolved, an update would be appreciated.

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