Thanks Joe! OK seems like it might be the EVGA or the Strix now instread of the MSI.
My case is closed and has no windows so silly flashing logo wont be an issue.
I've got both the MSI and a Strix and to be honest they are much of a muchness, the strix is capable of running very marginally faster but at the cost of being much noisier on higher fan settings... the MSI even on full is not very loud and is very comfortable on 80% and pretty much inaudible on 60%, where as the strix is comfortable at 50% but around 55-60% is my limit for gaming, any higher is purely benchmarking when the missus is out of the house territory
For "normal" usage I run them both at 1480 with the MSI on about 80% and the Strix on 50% and the strix in position 1 gets up to about 75C and the MSI in position 2 runs around 65C
Running a single card at 100% they will both do over 1500 without hitting 70C
the advantage the MSI has over the EVGA is that it has bigger fans, so for a given air flow the MSI will be slightly quieter than the EVGA
the heatsink on the EVGA is 266mm x 111mm
the heatsink on the MSI is 269mm x 140mm
so even the heatsink on the MSI is a fair big bigger as well