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If i give voltage to the Zotac GTX 470 AMP it shut down computer

post #1 of 7
Thread Starter 
Hello. i am using msi after burner 2.1.0 and forceware 270.51 driver.

My cpu is i 2600k @ 4.8 GHZ working with 1.475 volt

i dont overclock graphic card memory yet just trying gpu

now let me explain details

when i give 1.087 or 1.050 volt even if i dont overclock the gpu it shut down the computer instantly in the last benchmark of MSI Kombustor(DX11) test - 1920 pixel default

i tried with default voltage 0.987 volt and 725 mhz gpu

it completed test successfully

http://www.ozone3d.net/msi_kombustor...00.php?id=8305


i am really confused here what may be causing this. i wanna give maximum voltage and increase 725 mhz gpu limit but it fails

i have silverstone 750 watt power supply
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post #2 of 7
That's very strange because your AMP 470 actually has very good VRM cooling so they should be up to the task of keeping them cool even at max voltage. I don't know what could be the issue exactly but you could always try making small increases to clockspeed and voltage rather than one big jump up to max.
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post #3 of 7
Thread Starter 
Quote:
Originally Posted by juano View Post
That's very strange because your AMP 470 actually has very good VRM cooling so they should be up to the task of keeping them cool even at max voltage. I don't know what could be the issue exactly but you could always try making small increases to clockspeed and voltage rather than one big jump up to max.
it is not about cooling that is for sure
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post #4 of 7
Show down = most of the cases its PSU not delivering the power required.

Might try and connect the GPU to a different PCIE connector and see if it goes the same.
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post #5 of 7
Need more juice....
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post #6 of 7
doing 800 on core at 1025 here on a reference design
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post #7 of 7
Thread Starter 
fixed problem

my psu has 2 pciex power output and each cable has 2 exit

so i had connected only 1 pciex power output now divived it 2

it works fine

http://www.ozone3d.net/msi_kombustor...00.php?id=8334

800 gpu 2000 mem
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3 X Raid 0 OCZ SSD Dvd Writer Windows 7 Ultimate Sp1 SyncMaster BX2450 
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CPUMotherboardGraphicsRAM
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3 X Raid 0 OCZ SSD Dvd Writer Windows 7 Ultimate Sp1 SyncMaster BX2450 
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