I am using a probably 10 year old Rosewill 1K and have a spare that has basically lived in a drawer as backup for the one I am using. I am planning on moving on up to a 4070 and was wondering if I can use the old connections that run my 3070 or is it time to toss it and get new? I run a vanilla set up X570, 5900, 2 NVMEs, and 2 SSDs, no spinnys and a single monitor. Opinions welcome.