Review: AMD Radeon RX 7900 XT and RX 7900 XTX


Temperature and power consumption:


In order to measure the temperatures, we opted for the Superposition stress test in Extreme mode. We opted for three 5 minutes runs with 10 minutes interval between each test. We took advantage of this benchmark to measure the power consumption of the graphics card for the table above.

In order to know the temperature in Idle, after having finished the three loops of the stress test, we let the card rest for 20 minutes before reading the temperature. It should be taken into account that most of the cards have the “0 dBa” technology and therefore, the fans turn off below a certain temperature, often between 50 and 55°C. This means that it takes longer to dissipate the heat after a period of stress testing or gaming. A card without this technology will be noisier than others at rest. Small reminder: our temperature readings are taken in Open-Air. In a closed case, the cards will necessarily be hotter.

As we expected, the temperatures are very good and very well contained despite the fact that the heat is only evacuated by the upper part of our graphics cards. Our measurements are made outside the case for all the cards. However, you should be careful to have a good air circulation inside your case since the heat will be evacuated inside the case.

Power Consumption (full configuration):

We use a wattmeter to measure the power consumption on the output of our power supply. Our modular power supply is a CORSAIR AX1600i. The result we propose is the average of the total consumption of our configuration. Only the graphics card changes between each reading. It is therefore easy to calculate the difference between each graphics card.

The least pleasant surprise of our test of this new generation is the power consumption of our two samples. Even if it improves compared to the RX 6950 XT, we are above 400 watts. So, in pure gaming, the RX 7900 XTX performed better than the RTX 4080 but we would have liked to have a more controlled power consumption as it was the case for the NVIDIA card.