ASrock P45TS w/ 8gb DDR3 not registering mem?

Hello, I just put new corsair vengence memory in my rig with an asrock p45ts mobo which suports up to 8gb ram and in the bios it shows the 8gb but when i go to my pc > propertise it says 3.12gb ram. Also to note im running win xp.

Do you think im getting the performance of the full 8gb?

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More about asrock p45ts ddr3 registering
  1. Hi,

    Please check if you're in 32 Bit or 64 Bit OS. 32 Bit recognizes upto 3 to 3.5 GB out of 4 GB. Above 4 GB, 64 Bit OS needs to be installed.
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