R9270x mining

1. I don't know 7990. I haven't used it, but I used 290x. The general situation is as follows. If I is set to 20, the rejection rate is high, and the speed is a little more than 830k. I set it to 19, the speed is about 822k, the rejection rate is great. The 900K spread on the Internet is after overclocking, and the speed can reach 900 ~ 905. I haven't tested the power consumption after overclocking, but the actual mining power consumption is more than 200 watts. More accurate test, wait until the next shutdown! In addition, 7990 can only have 3 cards (6 cores) at most, and can support 4 cards (8 cores) with crack driver
in addition, 290x mining is not recommended. Because the noise is probably equivalent to the noise in the west of Yingze bridge in Taiyuan.

2. Can buy to see the color, do not change color, the kind of yellow

3. At present, it belongs to high-end graphics card. If you play it for three years, it's still middle end graphics card. You can play mainstream games. Just like the previous hd6850, mainstream games have no pressure, and most stand-alone games can run smoothly

4. Mining is possible, but this kind of old graphics card, energy consumption ratio is not high, from the point of view of electricity is a loss

5. There are a lot of mine cards, and it is difficult to distinguish them. It is better not to buy too many mine cards below the average price
generally, the probability of buying mine with invoice and full package is lower

6. There should be no problem.

7. The building owner's statement is not correct.
not only R9 280 and 290 series can mine, but also rx580, rx570, rx480 and rx470 series have strong mining calculation power and can support mining.

8. This card is feverish, 256 bit wide, 1280 stream processor, power about 200W, a card needless to say 7850 up mine card, many brands, my graphics card has been using micro star, still stable, suggest hawk clock frequency slightly higher than the normal version, boot 30 seconds fan reverse st, temperature control about 60 is still good. That's all I know!

9. 285280x is not as powerful as it is now. 480 is only 365g, 280x is 1000g. If you dig virtual coins that need double precision calculation, these old cards are faster. The only problem is power consumption, and they are old.