- Feb 21, 2015
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Thanks for stopping by! So basically I have a GTX 645 OEM GPU in my Dell system and I have been overclocking this card for a while now and have been VERY happy with my results (+160 Core/ +500 Mem. all at max of 59°C! 
). But I can't change the voltage or power limit slider in MSI Afterburner. Is this since I'm using a pre-built system w/ BIOS limitations and stuff or just because the GPU doesn't physically have and other connections other than the PCIe slot for more power? Any help would be great! Thanks! 
). But I can't change the voltage or power limit slider in MSI Afterburner. Is this since I'm using a pre-built system w/ BIOS limitations and stuff or just because the GPU doesn't physically have and other connections other than the PCIe slot for more power? Any help would be great! Thanks! 
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