Overclocking your rig 2 (VIDEO)

Discussion in 'Mods, Guides & Overclocking' started by opium, Mar 30, 2005.

  1. opium

    opium New Member

    Video Card overclocking


    video card overclocking is more risky than cpu, but it also MAYBE simpler


    What is different is video card overclocking to cpu overclocking
    1. there is no multiplyer for de clock
    2. differ from console bios overclocking(no bios settings)
    3. cannot be voltage modded easily

    the most common overclocks are frequency changes on the gpu core and ram
    there are more overclocking methods (read lower down)

    GPU - the graphics processing unit, specialised processor to rendering pixels to give us the picture or video we see

    ram - this ram is similiar to the ram we use in our system but it operates at higher freq, and it deicated to the video card

    now to start overclocking.
    the first most important imformation u need, is the type and name vdeo card u have, what is the model, what chip it uses.
    then we find information about, the chip and ram speeds of the video card,

    get the latest drivers, which will help in stablity issues when overclocking
    nvidia ati

    to overclock u need special software to overclock, sometimes the manufactor supplies u software monitors for the video card and can come with overclocking software. if u need one u can use this RivaTuner for overclocking.

    now have the program running and lets overclock
    with a manufactor software look for setting which allows u to overclock
    (normally looks like sliding bars with core(gpu) and memory(ram) next to them)

    with rivatuner u need to go in to the driver settings and customise system settings
    and u will see overclocking,

    enable and slide the bars to test overclocking ablities

    now dont go jumping on overclocking take babysteps

    increase the increments by 5 and check for stablity (use TEST)
    if it hits where it cant be stable decrease until its stable and then increase by increments of 1 until u are maxed at sable

    now to increase ram speeds
    follow the same manner in overclocking the gpu
    (for ddr memory, i advise using half the freq of the core speed or higher)
    and u are done

    give em a test

    simple?

    now to unlocking capablities which will improve card prefomace

    again information is your friend

    certain cards has the ablity not all has this feature
    here are a few
    nvidia 6800(non gt and ultra)
    ati 9800SE
    ati 9500(non pro, Lshaped ram partten)

    these card comes with hidden pipelines which is locked becasue it maybe faulty, they were made to run at the speed it was meant for the bigger boys eg 6800 --> 6800gt

    ati cards are unlocked using Omega ATI drivers u will see the option to allow it

    nvidia cards u can use rivatuner.

    when the ati cards are unlocked and shows no sign of defects, we can fully unlock the card permanatly
    (recommend staying with software unlock)

    if u decide to take this step it requires some soldering and bios flashing
    *NOTE: this will indeed VOID your warrenty and it may render it usless*

    the risky voltage mod
    voltage mods ore not really nesessary but it will improve some preformance and increase overclock abilty
    this is done by relaying resistors at certain point of the video card, supplying more voltage to the core.
    *NOTE: VOIDS WARRENTY*

    to go into detail of each mod and overclocking is too much info to put up.

    instead if curious google it.

    again there are cons and pros about this
    cons
    excessive heat
    may void warrenty
    shorter life span of components

    pros
    performance
    faster fps
    gives u bragging rights of fps on $$$ spent
    fatter 3dmark scores

    any tips before overclocking?
    get better cooling for the video card and case


    now i eh tell u to fry your card is if u up to de challange
     
  2. PhoeniX

    PhoeniX New Member

    to me those cons will make someone stay away from OCing a vid card
    prob put in sum sweet cooling to help the prob

    wait opium youre telling me the "normal" cards (the 6800 and 9800SE) are just locked by the manufacturer so stop performance from getting out?
     
  3. opium

    opium New Member

    nope

    chips are made in batches or waffers

    they ramdomly test chips to see if the chips are up to standards.

    if not the chips are sold as lower quality chips

    the chips has all the features as the big boys but set to be used as a lower standard, that is why we "unlock" them to the full potential

    bear in mind there is a 50/50 chance of getting one that are fully functional or u might get one which is bad
     
  4. PhoeniX

    PhoeniX New Member

    ohhh ok then i catch

    another thing the first part about overclocking the OCing of the GPU....
    do you have to follow all the steps you put or i cud just follow up on one of them and leave the rest of the settings normal
    e.g i OC the GPU and leave the RAM and voltages the way the manufacturer gave them to me
     
  5. mojo

    mojo New Member

    ahh...phoenix... good question.... If I had started this thread, you might not be asking this question.

    Let me get to the point. Yes it can be done. It is possible to clock the vpu independently of the RAM. However, the board(card) is normally designed to cater for a specific ratio between vpu and RAM. Overclocking either component independently, often results in artifacts*. This happens when you lose sync between your RAM and vpu. It is possible with some cards, but it possible to oc much more if you maintain the vpu:RAM clock ratio.

    I guess I now have to rush to post the RAM overclocking thread so that people can underdtand this thread better.
     
  6. PhoeniX

    PhoeniX New Member

    ^^^^^^^^
    wheyss boi opium i wasn't takin dat !!!

    ok i catch mojo but the voltage tuning sounds like sumthing a "normal" person should not try to touch the GPU Oc and the RAM OC ratios seems ok but playing with the voltages just plain scary dred "soldering" thas madness
     
  7. Paradoxxx

    Paradoxxx New Member

    everyone is rushing the brush with respect to this topic. Its a topic that many of us have studied to some length. there was this pt in time where we were all ocing our videocards/systems and showing off 3dmark03 pts.
     
  8. mojo

    mojo New Member

    I feel that there is still much to be explained here about video card overclocking. My PC is down right now, so i'll depend on you guys to patch up loose ends here while I do my research for RAM.
     
  9. opium

    opium New Member

    the voltage mods are one of the most scariest mods out there for video cards.
    because u have to find the correct resistors and very good undestanding about your video card lay out, this is not for de normal ppl but more like the crazyiest ppl
    it will fry your card if not done correct, they normaly use old cards to over clock anyway
    increasing the freq on the core and mem is more simple and if anyting goes wrong.
    it can be easy fixed, say go safe mode uninstall drivers.

    it does really help in keeping in ratio as mojo said
    keeping the memory in sync or faster can improve in overclocking alot

    and remember not to go over
     

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