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Nvidia GTX 480 SLI Overclock ?

post #1 of 7
Thread Starter 
Ok using something like a MSI Afterburner how do I overclock a Nvidia GTX 480 in SLI without touching the Voltage ? something safe that wount bring up the BSOD (Blue Screen OF Death) anyone no any stable settings that they have done with this graphics card ? I also have a i7 950 overclocked to 3.8GHz and Power supply is Corsair HX1000 if that makes any differance
post #2 of 7
Nice rig bro.

Just crank uo the core clock slider to 800 on both cards an run Vantage to check for artifacts an stability and Furmark to check for max temps.
And if u pass both ur done, then try an up it to 850. U might need to up the voltage to hit 850.
Edited by SadSoul - 11/4/10 at 4:33am
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The Liberator
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post #3 of 7
Are you sure you don't want to touch the voltage? As far as I know, you need to flash your GPU's BIOS to unlock any unsafe voltage settings. If you want to leave the volts, slowly start raising the core frequency. To start, raise it by 10-25MHz, and use a program such as OCCT or ATI Tool to check for artifacts. I would let that run for only about 3-5 minutes. If no artifacts are seen or picked up, raise it another 10-25MHz, and run OCCT again. Keep doing this until you run into artifacting, or sometimes a lock-up. This means you are past your stable clock frequency on the core or shader, which I believe are locked together on these cards. Drop your core frequency by about 25MHz from where the clock frequency was set when you had artifacting (or lock-up), then run OCCT again, this time for about 20-30 minutes. If you aren't artifacting at the new clocks, you can fine tune another 5-10MHz higher if you want, testing in OCCT for 20 minutes each time, but it's not really needed. If you are showing artifacts, drop you core frequency by another 10-25 MHz and try OCCT again for 20-30 minutes. Once stable, there's your core clock. Remember that setting, or write it down if you want. Reset core clock to stock. Now, with core clock at stock, repeat all the above steps for the memory clock frequency. Once you have found a stable core clock as well as a stable memory clock, you can set them both and run OCCT one last time. That is a very in-depth method, I usually can find my cards max OC in about 10 minutes plus a 20 minute OCCT run.
Sorry for WOT.
post #4 of 7
I dont recoomened OCCT at all. It can totally destroy perfectly good hardware. Avoid. Vantage an Furmark is more than enough.
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post #5 of 7
Quote:
Originally Posted by SadSoul View Post
I dont recoomened OCCT at all. It can totally destroy perfectly good hardware. Avoid. Vantage an Furmark is more than enough.
Really? I've never heard of that, so I'm kind of worried right now. Have a link or something that I can look at?
post #6 of 7
hey buddy i have safely overclocked my 480 sli to 775 core and 2000 memory successfully for hours of intensive gameplay like assassins creed black flag which is one of todays most demanding games. my rig

amd fx 6300 overclocked to 4.4 ghz (zalman 7500 cpu cooler)
msi 970a -g46 mobo
8gb g skill ddr3 1866 cl8
2 msi gtx 480
750w rosewill hive PSU
1tb Seagate

of course i have a full size atx and plenty of fans plus added gpu cooler. cpu temps on assassins nevr go higher than 60c usually. occasionally it will go higher depending on room temp. but it can handle temps at least 75c safely. for anyone who cares to know that. gpu temps usually stay around 70c to 77c. been running for like this for awhile now.
post #7 of 7
Quote:
Originally Posted by ffejster25 View Post

hey buddy i have safely overclocked my 480 sli to 775 core and 2000 memory successfully for hours of intensive gameplay like assassins creed black flag which is one of todays most demanding games. my rig

amd fx 6300 overclocked to 4.4 ghz (zalman 7500 cpu cooler)
msi 970a -g46 mobo
8gb g skill ddr3 1866 cl8
2 msi gtx 480
750w rosewill hive PSU
1tb Seagate

of course i have a full size atx and plenty of fans plus added gpu cooler. cpu temps on assassins nevr go higher than 60c usually. occasionally it will go higher depending on room temp. but it can handle temps at least 75c safely. for anyone who cares to know that. gpu temps usually stay around 70c to 77c. been running for like this for awhile now.

for got to say i was using msi afterburner and set voltages to 1.088 from 1.00 stock. kept it under 1.100 as much as possible since i don't want to push it to far. i want them to last a while. plus having two of them is plenty as is. especially with an amd 990fx mobo or an intel version both can support 100% sli usage
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