Is there any differences between these 2 same GPU model

Hi

I want to ask if there is any differences between these 2 GPU for mining:

1) Sapphire 11265-01-20G Radeon NITRO+ RX 580 8GB GDDR5
2) Sapphire 11265-01 Radeon NITRO+ RX 580 8GB GDDR5

As you see the first one has "20G" at the end.
I found only #2 in my area so to know if there is any different in hashrate.