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Here's what I have currently, and I'm looking to upgrade the RAM to 4Gb. Trouble is I have no idea what to buy! Main Circuit Board Board: ASUSTeK Computer INC. P5KPL-AM Serial Number: MT7088K00628521 Bus Clock: 200 megahertz BIOS: American Megatrends Inc. 0309 05/20/2008 Memory Modules 2040 Megabytes Usable Installed Memory Slot 'DIMM A1' has 1024 MB Slot 'DIMM B1' has 1024 MB

marked as duplicate by karel, Community Feb 11 '16 at 12:49

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Please take a look at the memory compatibility list provided by ASUS for this motherboard.

There are 4 RAM-sticks with 2GB size which would suit your needs.

  • Good answer. I would, however, also point out that this machine is from 2008, and the US$50 it will cost to upgrade the RAM is a waste of money relative to a newer machine (This motherboard takes a Core 2 CPU, has no HDMI output), and probably uses twice as much power as a new system. – davidgo Feb 11 '16 at 9:22
  • True, hoewever this machine could still be fast enough for basic office work, which might be all that OP needs. And more RAM certainly helps with this as well. Maybe taking a look at used modules could be recommended as well. – kyze Feb 11 '16 at 9:25

You need to get a set of 2 pieces RAM with following parameters:

  • 2GB each (4GB kit is often sold)
  • DDR2 (one where the connector is divided almost in the middle)
  • dual channel (when sold or used in pairs as in a kit)
  • 1066MHz (can be writen PC2-8500)

Your operating system for optimal usage of availiable memory range would need to be configured with PAE, so not just 3GB would be used, but all 4. Not a dealbreaker if not configured anyway.

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