Does anyone know if using a 4 pin to 8 pin ATX converter on my second 8 Pin CPU power socket will make my overclock more stable?

http://www.amazon.co.uk/dp/B0051Y0B0...SIN=B0051Y0B0Y

My PSU only has an 8 pin + 4 Pin CPU power connectors, both of which are currently plugged in. Will using this cable to convert the 4 pin to an 8 pin output help at all?