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DDR2 voltages

  • 09-10-2009 3:35pm
    #1
    [Deleted User]
    Posts: 0 ✭


    I'm working on a PC for someone, it appears to be one he built himself. It's randomly crashing and the Minidump folder shows 200 dump files - but it has also crashed while attempting to boot from a Vista DVD so I know it's not solely a software problem. I'm trying to analyse the problem but one thing hit me, which is why I'm mentioning this in this particular forum.

    His RAM is a 4GB 4-4-4-12 kit of Patriot DDR2-800 at but its label states it's rated for 2.1V. I can see in Everest that the motherboard, an Asus P5QC, is running the RAM at 1.8V with the timings at 5-5-5-18 (everything is set to Auto in the BIOS).

    Now I know the standard voltage for DDR2 is 1.8V. So my question is, could the instability be a result of the RAM being undervolted? Or would this just stop the RAM from operating at 4-4-4-12? I'm really only interested in getting the machine stable, I'm not too concerned about the timings. The CPU is an E8400 if anyone needs that info.


Comments

  • #2
    Anti
    Closed Accounts Posts: 12,401 ✭✭✭✭Anti


    Yeah this is quite a common problem for ddr2. Go into the bios and manually set the timings and voltages to what is rated on the sticker on the dimms, save and reboot.


  • #3
    Deano12345
    Registered Users, Registered Users 2 Posts: 1,594 ✭✭✭Deano12345


    Karsini wrote: »
    I'm working on a PC for someone, it appears to be one he built himself. It's randomly crashing and the Minidump folder shows 200 dump files - but it has also crashed while attempting to boot from a Vista DVD so I know it's not solely a software problem. I'm trying to analyse the problem but one thing hit me, which is why I'm mentioning this in this particular forum.

    His RAM is a 4GB 4-4-4-12 kit of Patriot DDR2-800 at but its label states it's rated for 2.1V. I can see in Everest that the motherboard, an Asus P5QC, is running the RAM at 1.8V with the timings at 5-5-5-18 (everything is set to Auto in the BIOS).

    Now I know the standard voltage for DDR2 is 1.8V. So my question is, could the instability be a result of the RAM being undervolted? Or would this just stop the RAM from operating at 4-4-4-12? I'm really only interested in getting the machine stable, I'm not too concerned about the timings. The CPU is an E8400 if anyone needs that info.

    Check the BIOS for an option to change the voltage on the ram,change it to 2.1 and see what happens


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