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Zotac GTX 470 Fermi Edition Overclocking! HELP NEEDED :(!

post #1 of 15
Thread Starter 
Hey everyone,

As stated in the title I may need a little help, my card keeps locking up, not seen any artefacts as of yet. I hope my card isn't downclocking, I'll post 2 profiles I have for an overclock:

My main OC (Unstable):
Volts: 0.950
Core Clock: 800mhz
Shader Clock: 1600mhz
Memory Clock: 1800
Fan Speed: 50%
Temp at load: 46 - 56 degrees

Second OC:
Volts: 0.950
Core Clock: 760mhz
Shader Clock: 1520mhz
Memory Clock: 1750
Fan Speed: 50%
Temp at load: 45 - 55 degrees

Should I up the volts to 0.990, or will my card mess up? I don't know the boundaries of my card yet, and I'm worried!

GPUz says:

Name: NVIDIA GeForce GTX 470
GPU GF100
Revision A3
Technology 40nm
Die Size 526mm^2
Release Date Mar 26, 2010
Transistors 3200M
BIOS Version 70.00.21.00.03
Device ID 10DE-06CD
Subvendor NVIDIA (10DE)
ROPs 40
Bus Interface PCI-E 2.0 x16 @ x16 2.0
Shaders 448 unified
DirectX Support 11.0 / SM5.0
Pixel Fillrate 30.4GPixel/s
Texture Fillrate 42.6 G Texel/s
Memory Type GDDR5
Bus Width 320 Bit
Memory Size 1280MB
Bandwidth 140.0GB/s
Driver Version nvlddmkm 8.17.12.6099 (ForceWare 260.99) / Win7 64
GPU Clock 760MHz
Memory 875MHz
Shader 1520MHz
Default Clock 608MHz
Memory 837MHz
Shader 1215MHz
(/)OpenCL (/)CUDA (/)PhysX (/)DirectCompute 5.0

If anyone has any input I'd really appreciate it, any more info you guys require to help, I'd gladly offer!

Thanks
    
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post #2 of 15
I was once told by a freind, "if you smell burning... stop." However thats a little vague.
What is the stock voltage of your card?
Like cpus, upping the voltage in incriments tends to make your overclock more stable. And ofcourse it will in turn increase your temratures.
my first oc i went right up to 800 core aswell. It was also not stable, so when i felt brave enough, i unlocked the voltage in MSI afterburner and set it to 1037. i belive it to be my most stable OC to date. its not my fastest tho

This is my current settings, and its on the very brink of artifacts. (also remember my 470 is on a re-designed PCB from gigabyte that can handle power cleaner and more efficiently than the reference card:



So i hope that was helpfull. Good luck, and remember, if you smell burning... STOP!!!
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post #3 of 15
Thread Starter 
Stock Volt is 0.950!

So if I crank it up to 1v it won't go mental on me? lol
    
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post #4 of 15
just increase it in small increments, you may be fine. It's your card and your call.
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post #5 of 15
1.087 is the max spec for vanilla cards. If you keep the temps in check, it won't kill the card.

However, keep in mind that the shader and core is linked. Though higher vcore will help core stability, the faster the shader is going, the lower heat you need to keep it stable...
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post #6 of 15
Thread Starter 
Played Crysis at 0.987v, 800mhz, 1600mhz shader, 1800 memory clock, for about 30 minutes, was fine until I got some crazy artefacts and it totally locked up. Does this mean I should up the volts and lower the shader?
    
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post #7 of 15
what was it like when you played with stock v's? if your temps are still under 80C @ load (my idea of safe) than try 1.000
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post #8 of 15
Thread Starter 
My temperatures are like <50 lol! At all times! Never go beyond! It's at 1v now, will game for a bit, if it locks up I'll try upping the volts again :/ don't really want to have to! But as you say, mine is the vanilla card, and not as powerful, is there anyway I can unlock it? Unlock the shader cores, flash the bios or whatever?
    
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post #9 of 15
im not saying my card is more powerfull, it just has features that handle the supply of power more efficiently.
also on 400 series cards, the core and shaders are forever locked as you play with the core the shaders will follow
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post #10 of 15
Quote:
Originally Posted by Roxborough View Post
My temperatures are like <50 lol! At all times! Never go beyond! It's at 1v now, will game for a bit, if it locks up I'll try upping the volts again :/ don't really want to have to! But as you say, mine is the vanilla card, and not as powerful, is there anyway I can unlock it? Unlock the shader cores, flash the bios or whatever?
yes you can flash the bios for more voltage but if your only at 1v you still have a ways to go until 1087mv. increase the voltage to the max and sowly increase the core and memory up, every 3 or so increments start up kombustor to check stability and temps.


Edit: this is currently where I have mine at, 1137mv
Edited by Yumyums - 1/27/11 at 6:28pm
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