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EwinRacing Flash Series Gaming Chairs

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Hello, I have been trying to downclock my HD4870 (from XFX with 512mb vram) because its idle temperature is around 155F.

I modded my vbios using RBE and set it at 200 for gpu and 500 for vram for 2D, and 500 and 700 for 3D.

Fortunately, it cooled down to 144F when Idle, but sometimes it gives me some flickering.

Is there anyway that I can troubleshoot this problem?

Thanks in advance.

Si Hyoung

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