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Overclocking MSI 470 GTX Twin Frozr 1280MB

Was running a test to see if I can increase core clock to 820, from 800. I tested 820 at 1025 core voltage, and then again, upping to 1037 voltage. On both of these tests at 820 I saw a few artifacts (looked like lasers out of star wars, wierdly...)

So my question, just to be absolutely certain: do the artifacts come about because there is not enough core voltage? Do I keep on upping it in until the artifacts do not appear (temperatures permitting)? Jimmy your first post seems to suggest this. Sorry if this is obvious, just wanted to double check and make sure, am new to this...! Thanks a lot. :)

1037mv / 820core / 1640shd / 1800mem

Unigine Tropical:
Render: direct3d11
Mode: 2560x1600 fullscreen
Shaders: high
Textures: high
Filter: trilinear
Anisotropy: 4x
Occlusion: enabled
Reflection: enabled
Refraction: enabled
Volumetric: enabled

In all tests so far GPU temps never exceed 72C.
 
my gtx470 with a zalman aftermarket cooler runs no hotter than 60*c,but my o/c is maxed out stable at 800ghz,doesnt matter what voltage i apply,(1.050 runs 800)
forget memory, makes no difference,
 
Quick question: when I run this card at 825 clock, I see a couple of artifacts in Unigine Tropical benchmark, but I can play ARMA 2 at 825 clock and not see any artifacts - is this because Tropical pushes the GPU harder and/or uses directX11?
 
Running 2 of these in SLi - 840 Core, 1900 Memory with max volts. 845 on the core showed the odd artifact here and there occasionally. Some room to improve on the memory but not fussed about it.

Peaks at 77°C in Furmark.

Really quiet all the time.

Well chuffed! :)
 
mines quiert but not had much time atm to test it out but tryed future mark 11 temps went up to 64 C . Noise levels pretty good on the card even at 100% it didnt seem to loud . running tf2 been getting upto 300 fps and sometimes going down to 90fps temps not over 54 on tf2 . There is plent of power there for me no need to overclock
just need a cpu cooler thats quiert too
 
alexkyriak said:
Was running a test to see if I can increase core clock to 820, from 800. I tested 820 at 1025 core voltage, and then again, upping to 1037 voltage. On both of these tests at 820 I saw a few artifacts (looked like lasers out of star wars, wierdly...)

So my question, just to be absolutely certain: do the artifacts come about because there is not enough core voltage? Do I keep on upping it in until the artifacts do not appear (temperatures permitting)? Jimmy your first post seems to suggest this. Sorry if this is obvious, just wanted to double check and make sure, am new to this...! Thanks a lot. :)

1037mv / 820core / 1640shd / 1800mem

Unigine Tropical:
Render: direct3d11
Mode: 2560x1600 fullscreen
Shaders: high
Textures: high
Filter: trilinear
Anisotropy: 4x
Occlusion: enabled
Reflection: enabled
Refraction: enabled
Volumetric: enabled

In all tests so far GPU temps never exceed 72C.
Click to expand...


Those kind of laser artefacts you describe are usually due to an unstable memory overclock. I notice you'd increased your mem clock for this run. I'd leave the other settings as they are and back your mem down a little bit.

Your power cut out with higher v on the GPU core could very well be because your old PSU is no longer putting out enough stable power on the 12v lines. It's a monster PSU, but as they age they can be unpredictable. I had similar problems with a decent 500W PSU that suddenly wouldn't support my overclocked 8800GT/Athlon 64 system. Should have had power to spare, but it was also about 3 or 4 years old and I just started getting random, but increasingly-frequent power-offs in games and benchmarks. It's ok now for you it seems, so you'll probably be okay, but just thought it might be useful to think of if it happens again or more frequently.
 
My afterburner was the same coolamasta, i uninstalled it and installed the one from the disc and the voltage now shows up.
 
Don't fart arse about, just whack the voltage up to 1.087 and the core straight upto 800-850, custom fan profile to ramp the fans up earlier, job done.

Few runs of heaven and crysis just to check and go for it.
 
rounddodger said:
Don't fart arse about, just whack the voltage up to 1.087 and the core straight upto 800-850, custom fan profile to ramp the fans up earlier, job done.

Few runs of heaven and crysis just to check and go for it.
Click to expand...

If you have a card that can do 800MHz on a lower voltage tho using 1.087 does increase heat and power use quite a bit compared to what you could be getting.

These cores respond the most to lower temps, but do need a voltage increase too, if you can get the temps down to <40C load (not really possible without a high end cooling setup) you can pretty much slide the clock setting all the way to the right with only minor voltage adjustment :D

In answer to the OP about voltage, fan speed and clock correlation - it varies from core to core they all respond differently you have to find the best settings for yourself - although rounddodger's brute force method will work for many of them.
 
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