i bought my pc from you guys in autumn last year with the intention of adding a second gtx 460 at a later date.So with this in mind i used your configurator and it told me that the minimum psu i would ned would be 650w and consequently i purchased that.I have indeed bought a seccond gtx 460 which is as of yet un installed. I had another check with your configurator just now and it informed me that a 750w psu is required.So .....is my psu suitable