Originally Posted by Redwoodz
I would not bother, you might not even be able to load a 1070 in that system due to no uefi support. New tech is making these old machines irrelevant. I bought a Ryzen 5 2600 for $149 last week. Running a single tower air cooler with 1 140mm fan I can run 4.1+GHz easy...even with 4 sticks RAM.
But did you get 4 sticks of ram and your 2600 build for $149? That's the real question here. You might argue that other used systems are better, but if he has to invest in DDR4 ram, maybe it's not... Hence the bang for buck question...
@OP, 2060 references were based on passmark scores, https://www.videocardbenchmark.net/directCompute.html
Passmark doesn't accomplish things, it's just a benchmark. If you have more accurate benchmarks from the workload you are using, refer to them. They will be more reliable for what you are doing.