ASRock Arc B570 Challenger OC Performance, Power Analysis & Noise Output

Part Analysis

The main parts of the graphics card are the backplate, the cooler, the PCB, and the fan assembly.

Photos of the PCB’s front and rear sides.

The cooling solution uses seven heatpipes, which pass through the block that comes in contact with the GPU.

The fans’ model number is FDC10U12S9-C. They are pretty strong, with a 0.45A max current rating. I couldn’t find any reliable information about their bearings, and I didn’t want to destroy them to find that out, either.

The BMG-G21 graphics processor uses the Arc Battlemage architecture. It is made by TSMC using a 5-nanometer process. Its die size is 272 mm², and it has 19.6 billion transistors.

A five-phase VRM circuit handles the GPU’s power delivery. The same circuit uses Alpha & Omega AOZ5517QI DrMOS, and the PWM controller is an Alpha & Omega AOZ71137QI IC.

Samsung makes the GDDR6 memory chips, which have a model number of K4ZAF325BC-SC20. They can typically operate at 2500 MHz, 20 Gbps GDDR6 effective.

RAM takes power from two VRMs, handled by an Alpha & Omega controller. The RAM voltage regulation circuit uses Alpha and Omega AOZ5507QI DrMOS.

The card’s power socket. It is a plain 6+2 pin PCIe header.

Apaq provides the polymer capacitors used by the PCB’s VRMs.

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