GeForce GTX 1070 Ti vs GeForce RTX 3070 Ti specs and performance
According to the hardwareDB Benchmark, the GeForce RTX 3070 Ti GPU is faster than the GeForce GTX 1070 Ti in gaming.
In our comparison, the GeForce GTX 1070 Ti has a slightly higher core clock speed. The core clock speed (or base speed) is the frequency at which the GPU core runs. This metric makes sense when comparing GPUs of a similar architecture or generation. Despite this, the GeForce RTX 3070 Ti has a slightly higher boost clock speed: the maximum frequency the chip can reach if power delivery and thermals allow.
Next up, in terms of GPU memory, they both have the same amount of memory at 8 GiB. Memory size doesn't directly affect performance, but too little memory will certainly degrade gaming performance.
In addition, the GeForce GTX 1070 Ti has a significantly lower TDP at 180 W when compared to the GeForce RTX 3070 Ti at 290 W. Heat output doesn't match power consumption directly but, it's a good estimate.
In conclusion, all specs and GPU benchmarks considered, will recommend the GeForce RTX 3070 Ti over the GeForce GTX 1070 Ti.