"By changing the resistance of the variable resistor and evaluating the overclockability of the card at different GPU voltages, I found the maximum GPU frequency at which the card was stable ? 640MHz. Thus, the frequencies of the reference graphics card were 640/1100MHz at extreme overclocking.
The voltage of the graphics processor was 1.233v at Windows XP startup, 1.562v after the load of the graphics card driver, in 2D mode, and 1.629v in 3D applications. Before the modification, these voltages were 1.233v, 1.431v and 1.477v, respectively"
"So, the power consumption of the GeForce 6600 GT cannot exceed 75.9W. But how can we measure it with more precision? It?s done simply, in the same way as I tested the AGP cards in my previous reports. I isolate the power contacts of the PCI Express x16 slot and send this power directly to the card, bypassing the slot."
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