Page file question

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Hi guys, Am i correct in saying that the Page file is used when the physical memory is taken up? if so then i would assume this slows the computer right down as the hard disk drive is far slower than the memory (especially DDR2).

This basically has come about because my work computer has 512Mb Dual Channel DDR2 memory in it and my page file size was 625Mb, The computer was obviously chugging along so would this cause it to drag as it would mean when accessing files on the hard disk drive it is also access another part of the drive for the page file?

Another thing that I'm hoping you guys can tell me is if 1gb of single channel DDR2 memory will be better than dual Channel 512mb DDR2 memory (2 x 256mb) for peformance, I would have thought not as it would be half the transfer rate as the single 1gb even though the increased available memory will be good. Any idea's?
 
your're right, the page file is used when there is no available memory (in theory) so the HDD is used as 'virtual memory', although you'll find that there will always be something paged no matter how much RAM you have. Ram is faster than a HDD so a big page file usually means you need more RAM or have less programs running :p. Faster RAM isn't going to help prevent paging but more of it will and more faster RAM is even better :D

I hope this helps.
 
Colbaker said:
Another thing that I'm hoping you guys can tell me is if 1gb of single channel DDR2 memory will be better than dual Channel 512mb DDR2 memory (2 x 256mb) for peformance, I would have thought not as it would be half the transfer rate as the single 1gb even though the increased available memory will be good. Any idea's?
Dual Channel memory is not twice the speed of single channel memory, the difference is 10% at most.

Basically if you want less pagefile use get more memory.
 
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