1. NVIDIA GTX 1070
Core Clock: 1506Mhz
Mem Clock: 8Gbps
Memory: 8GB DDR5
Positives
Good hashrate to power ratio
High amount of memory
Negatives
Expensive to buy, may cause long return on purchase
Low stock pretty much everywhere
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2. RX 580
Core Clock: 1257Mhz
Mem Clock: 8Gbps
Memory: 8GB DDR
Positives
Great price compared to Nvidia
Stays relatively cool while mining with low power consumption
Negatives
Pretty much impossible to buy do to popularity
3. RX 480
Core Clock: 1120Mhz
Mem Clock: 8Gbps
Memory: 8GB DDR
Positives
Cheap as its an older model
Still performs very well compared to the RX580
Negatives
Very hard to find as majority of miners still use them
4. AMD Radeon RX Vega 56
Core Clock: 1156Mhz
Mem Clock: 800Mhz
Memory: 8GB HBM2
Positives
Very good mining hashrate
Can easily be tweaked to perform on par with a GTX1080
Negatives
Runs Very hot
Availability
5. Nvidia GTX 1080Ti
Core Clock: 1480Mhz
Mem Clock: 11Ghz
Memory: 11GB GDDR5X
Positives
Hugely powerful
Very High hashrates
Negatives
Extremely expensive to buy and to run