Have the exact same problem with my 1070Ti...!!!
Hi there. I've just bought Speccy Pro, but when I start the program, I see that My graphic card only shows as 4GB ddr, but it's 8GB. It's a "ASUS GeForce GTX 1070 Ti ROG Strix 8GB GDDR5, Advanced Edition" Please update your program. How can I trust the other info, when it tells wrong?