The card is 4.0 pcle, it's both + and -, because the patency is better, but you need a connector and a 4.0 pcle, if the connector is 4.0, and the 3.0 processor supports, the performance is lower than no more than 10%, in general, almost imperceptibly. So be careful when choosing. On tests, the temperature is not more than 70 degrees, the fans turn on only under load. Came whole sealed, no signs of opening. Took for 11k, price-quality 9.5/10.
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