I think you might be alright... the ones in the picture are Thermaltake SMART Series SP-750PCBUS 750W ATX 12V 2.3 80 PLUS BRONZE Certified Active PFC Power Supplies.
Thanks again for sharing. The pictures make a vivid point to all of us to watch the heat.
My PCI cables almost, sometimes feel a hint warm. Yeah, a good sign.
Just by turning mine vertical, dropped a few degrees. Thank you Strato!