Get a 1060 or RX570, its already a shit ton faster than your current card, i estimate around 4x more horsepower
We've run hundreds of GPU benchmarks on Nvidia, AMD, and Intel graphics cards and ranked them in our comprehensive hierarchy, with over 80 GPUs tested.
www.tomshardware.com
Dont be stressed about the mining cards, these guys had to tune their cards to be efficient, underclocked them too as the PSU sata power cables would be the first thing to fail.. Sata power cables are used to power the GPU risers, and the plug would literally melt off if not optimally tuned.
Id suggest getting something with a bit more
IPC performance, perhaps look at some of the newer gen stuff once you get a chance..
These quotes are for CPU, MOBO and RAM
Has iGPU
www.evetech.co.za
Has no iGPU
www.evetech.co.za
i know its evetech and after sales service with them is questionable, but just using them as an example..