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Also, my miner was working at 97 degrees I live in Venezuela the people who sold me the machine told me that temperature is ok.
Is that 97F ambient air temperature where the miner is located or 97C as reported miner temperature? The 921's run hot and mine routinely reported 98-104C miner temperature with no problems. That is with room air temperature being up to 92F (33.3C). They ran that way for over 2 years before I upgraded to the A10 series and took the 921's off line.Regarding the PCIe connectors, what PSU does it have?
The A921 requires one rated for at least 1,800W and when running hot it will pull up to 2,100W. If done properly, the higher the wattage a miner PSU is rated for the thicker the wires used for the cables, 16ga is preferred. That in turn better pulls away heat from the connectors. A PSU that is too small or cheaply made will use thinner wires and possibly instead of copper, aluminum wires which is even worse.
