http://www.tomshardware.com/reviews/sapphire-vapor-x-r9-290x-8gb,3977-5.html
I know it is total system power consumption, but there is little difference between the gtx 970 and the r9 290x 4gb on the review, while the actual tdp of the 970 is 145W and the 290x have 300W, which is a huge 155W difference. Sure they are overclocked, but shouldn't make much of a difference since both of them are overclocked. In the review, there is only a 34W difference when the difference between the gpus are 155W.
I know it is total system power consumption, but there is little difference between the gtx 970 and the r9 290x 4gb on the review, while the actual tdp of the 970 is 145W and the 290x have 300W, which is a huge 155W difference. Sure they are overclocked, but shouldn't make much of a difference since both of them are overclocked. In the review, there is only a 34W difference when the difference between the gpus are 155W.