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F@H GTX 470 core and shader speeds just dropped

post #1 of 12
Thread Starter 
Hi,

My GTX 470 core just went from 790 to 405 and the shader dropped accordingly while folding. What could cause this. My voltage also dropped from 1.087 to 0.887. Also, my GPU usage went from 99% to 0 then jumped back.

Any help would be greatly appreciated.
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Black_Phoenix
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post #2 of 12
dude, when it's idle it'll downclock to 2D speeds to reduce heat/noise then when it's under load it'll jump back up again dont worry
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BallaTheTrollolol
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post #3 of 12
Thread Starter 
Right now it is at 99% usage according to afterburner and it is still reporting 405Mhz on the core and 810 on the core. Is it possible my oc is unstable?
Black_Phoenix
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Black_Phoenix
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post #4 of 12
405mhz is a result of instability. It will stay at those clocks until you reboot and will lock itself down again if you dont find out why you are unstable.
 
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post #5 of 12
probably unstable if it's downclocking under load
post #6 of 12
Thread Starter 
Thank you for your answers. It appears f@h is showing my OC is unstable. I will lower it and see if that fixes it. Thanks again for your answers.
Black_Phoenix
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Black_Phoenix
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post #7 of 12
It's an unstable overclock, as has been mentioned. The new WUs seem to be causing some stability issues for a few users from what I've seen. Either ton down the core clock or unlock the max voltage for increased stability.
    
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post #8 of 12
Def check your temps and your Folding Logs to see if there have been any errors or failed WUs.
 
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post #9 of 12
Thread Starter 
I did have a few EUE due to stability at 805, 800 and 795. I will try my core at 785 down from 790 and see if that works. Also, my temps only go up to 71c.
Black_Phoenix
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Black_Phoenix
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post #10 of 12
I see. Well looks like the clocks need to come down a touch more then (unless you want to voltage unlock as someone mentioned above).
 
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Corsair Performance Pro 256GB  Western Digital Elements 2TB Samsung F4 2TB EK Supremacy  
CoolingCoolingCoolingCooling
EK-CoolStream XTX 360 (X2) D5 w/ EK Top XSPC Photon 270 Tube Reservoir EK Compression Fittings 
CoolingOSMonitorKeyboard
Yate Loon Medium (x13) Windows 10 Pro x64 Dell UltraSharp U2715H  Corsair Strafe RGB w/ MX Cherry Silent 
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