Mac Pro :: Calibrated Screens Not The Same As The Other Screen

I am running 2 (early 08) Mac Pros in my studio but try as I might I can't get the two Eizo screens to look the same.

1st MP is 2 x3.2GHz Quad Core with 32 GB Ram and ATI Radeon HD4870 connected via DVI to an Eizo CG211 (Coloredge display).

2nd MP is 2 x 2.8 GHz Quad Core with14 GB Ram and NVIDIA GeForce 8800 GT connect via DVI to an Eizo S2231W (Flexscan display).

The CG211 runs ColorNavigator, Eizo's in built calibration system, (described as hardware calibration) using a Datacolor Spyder 3 sensor.

The S2231W does not have hardware calibration and uses the same sensor Datacolor Spyder 3 and Datacolor's owner software Spyder3Elite 4.0.2.

I am pretty confident that I am running through the calibrations correctly. The ColorNavigator is idiot proof and I have created a similar target on the other machine Temp 6500K, Gamma 2.2, Brightness 90.

The Spyder3Elite is bringing back consistent results, consistent with previous calibrations, but just not the same as the other screen.

In general I would say that the FlexScan Spyder3Elite screen looks warmer (less blue) than the ColorEdge Screen.

They are next to each other on a long workbench so are under fairly similar lighting conditions.

I have spoken with Native Digital who sold me both screens, with Eizo and ColorData, but everyone is fairly unhelpful blaming each other's products and sometimes the graphics cards.