2009 MBP: Color difference between integrated VS dedicated?

I took two screen-shots of the desktop with two exact backgrounds, also the same color calibration settings for both. It turns out that running the dedicated card shows colors more vividly than the integrated graphics. Anyone else notice this?

No, what I did was I went into OS X under each card, integrated and dedicated, then use Grab to take a fullscreen image of it. Then I viewed both images both in integrated and dedicated. I also exported those images to my Mac Pro. I use a gateway and a samsung monitor, both showing the same result, the dedicated card keeps the original colors while the integrated card makes the color more washed out.
One of the image I tested with was this: http://interfacelift.com/wallpaperbeta/details/1894/tuliprace.html
If anyone else have a recent MBP with dual video GPU, I'd like to see your results using the same test.
I just uploaded the two shots, here they are. Again in both GPU, I use the same color calibration, the only change I made from the default is I increased the gamma to 2.2 instead of 1.8. Each picture are approx 2.2MB if you choose to download it.
http://img193.imageshack.us/i/test1dedicatedcalibrate.tif/
http://img193.imageshack.us/i/test2integratedcalibrat.tif/
Also even using the default color settings, the dedicated card still shows the original color vs the integrated.
Maybe not all GPU are not the same... or somebody needs to make a firmware update.
Message was edited by: Supreme Virtue

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[https://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/70a25d3a-e4fa-2a10-43b5-b4169ba3eb17]
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wooliudo wrote:
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2009 MBP: Color difference between integrated VS dedicated?

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