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afterdawn.com > forums > pc hardware > other pc hardware > installing ram, please help!
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Installing RAM, please help!
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Squall11
Junior Member
_ 		2. April 2010 @ 20:10 _ Link to this message    Send private message to this user   
I have a dell dimension 8200 which is running on windows XP at the moment.

I have a CD which can upgrade it to windows 7, but i can't install windows 7 because it says my pc doesn't have enough RAM.

My RAM is currently 256MB and it needs to be at least 512MB. I found some spare RAM modules lying around which are 512MB but when i tried to install them, they didn't physically fit in because there was only one gap in the bottom whereas i need a module with 2 gaps.

I have 4 RAM slots and i think i have 2x 128MB modules and 2xblank modules.

I'm planning on buying some new RAM modules but how do i know whether this module is going to fit or whether it won't fit in like the ones i already have?

Also, do i have to install the new RAM modules in pairs? Because i've read sometimes you have to and sometimes you don't?

Please help!

Thanks
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ddp
Moderator
_ 		3. April 2010 @ 00:38 _ Link to this message    Send private message to this user   
according to the link i posted here, you need rambus memory & it has to be installed 2 at a time. the 1 knotch ram you have is either ddr or ddr2 ram.
Specifications link http://support.dell.com/support/edocs/sy...ecs.htm#1101572
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Squall11
Junior Member
_ 		3. April 2010 @ 05:06 _ Link to this message    Send private message to this user   
Originally posted by ddp:
 according to the link i posted here, you need rambus memory & it has to be installed 2 at a time. the 1 knotch ram you have is either ddr or ddr2 ram.
Specifications link http://support.dell.com/support/edocs/sy...ecs.htm#1101572
Okay thanks a lot. If the memory banks are 2 slots of 2, and I already have 2x 128mb modules. In what order to I have to put in the new memory modules? Do I put the two pairs together? Or I do mix and match them?

Also, I've read that the RAM operates at the slowest one, is this true? Because I have 2x 128mb modules and I want to buy 2x 512mb modules. If I have all 4 in, will this be slower than if I only had 2x 512mb in?

Thanks
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ddp
Moderator
_ 		3. April 2010 @ 12:42 _ Link to this message    Send private message to this user   
have to be 2 the same as in same speed & capacity. will run at slowest ram speed. time the load speed with 1.2gig of ram & with 1gig of ram before installing win7 as most likely won't see any real time difference. if install win7 then keep the 2-128meg with the 2-512meg as will help a bit. what is your cpu speed?
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