overclocking GeForce 4 440

Discussion in 'Hardware Components and Aftermarket Upgrades' started by alekkh, Nov 6, 2004.

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  1. alekkh

    alekkh Notebook Evangelist

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    I have zv5000z and I wonder how safe it will be to overclock the video card?

    I installed omega drivers, didn't like them, returned back to the NVidia driver and found that the clock option is still available in the GPU settings (apparently, rolling back the driver did not modify the registry entirely back).

    - The default NVidia values are- Core clock 189 MHz and Memory clock 400MHz.

    - I've been able to use 250MHz and 600MHz without a problem.

    - The maximum possible values are 380 and 960 MHz.

    How safe it will be to push the frequncies up and what frequancies are known to work? Which clock - core or memory - increases performance more? Can I damage the GPU?
     
  2. brianstretch

    brianstretch Notebook Virtuoso

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    I've been running 250/500 for a while now, but I rarely play games on this notebook. I have a desktop Athlon 64 machine for that.

    It's always possible to burn out the GPU, but as a rule you'll see image artifacts (rendering glitches) if the GPU gets too hot. That's how I knew to stop at 250/500 on my notebook. Your notebook is likely newer than mine, mine is one of the first zv5000z's.

    Hiking the memory speed will help the most at higher resolutions. Hiking the GPU speed will help all around. Suffice it to say you need every edge you can get with this antique GPU.

    Setting HKLMSoftwareNVIDIA CorporationGlobalNVTweakCoolBits to 3 (DWORD) in the Windows registry (regedit.exe) enables the clock frequency settings page.
     
  3. alekkh

    alekkh Notebook Evangelist

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    Thanks, I've been able to use 250/550 without artifacts, and it looked noticeably faster. The card would even go 300/600, but would freeze with OpenGL 3D apps.

    Yet, something make me think "why is 189/400 the default, not 191/410 or smthing like that". So, i turned the clock back ... I value a working laptop more than the slight GPU improvement :)

     
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