Pictures of my "mining-rig". Not as big as yours but.....

I see you have the Corsair 750M for 2 S3. I do have the Corsair CX600M with 2 PCI-e (on 1 cable) for 1 S3.
Question: Are your cables "hot" ?? I noticed that mine get pretty warm just with 1 S3 hooked up to it. NO OC!
Just wondering ...