Ddr2 ram issue on new mobo

By ericcothran
Feb 18, 2008
  1. I recently got a new mobo and 2 more 1gb sticks of ram. All 4 sticks are 1gb, PC2, 5300 (2 are PNY and 2 are Kingston) In my BIOS it seems they are running at 266mhz but they are suppose to be 667mhz any reason I don't get the option to go higher than 400mhz (when I used 400mhz it wouldn't boot) Also, when I right click properties under "My Computer" it only says 3gb of ram. Any ideas/suggestions are appreciated.

    mobo- http://www.newegg.com/Product/Product.aspx?Item=N82E16813157124

    2gbram- http://www.newegg.com/Product/Product.aspx?Item=N82E16820134045

    2gbram- http://www.newegg.com/Product/Product.aspx?Item=N82E16820178133&ATT=20-178-133&CMP=OTC-17exta6&nm_mc=OTC-17exta6&cm_mmc=OTC-17exta6-_-Memory+(Desktop+Memory)-_-PNY+Technologies++Inc.-_-20178133
  2. Matthew

    Matthew TechSpot Staff Posts: 5,332   +101

    Page 44 of your motherboard manual says you can manually adjust the memory's clock frequency, and the 333MHz setting is for DDR2-667, 400MHz is for DDR2-800MHz, so you were overclocking your RAM by 133MHz and that's likely why your system wouldn't boot. Download CPU-Z after you change the BIOS settings to 333MHz, see what it says. Go read up on SDRAM, DDR and DDR2.

    I'm pretty sure Windows XP 32bit won't recognize more than 3GB of RAM.
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