Here's the test results I did on the KomputerBay 128gig 1000X CF.

The 128gig 1000X KomputerBay cards to work both on 5DmkII and 7D. The 128 gig 1050x WILL NOT.

This is due to firmware on the CF controller, its older than the one on the 1050X. But both controllers are the same.

The 128 gig is slightly slower than the 64 and 32 gig version and here is a comparison of resolutions and number of frames the 128 can do on the 5DmkII.

Raw video recorded frames on 5DmkII (compared to 64gig in red)

1880 x 1058 16:9 = 762 ( 1049 )

1880 x 940 2:1 = 14,641 ( continuous 21,763 )

1880 x 800 2.35:1 = 17,875 ( continuous 21,763 )

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1872 x 1054 16:9 = 686 ( 1,429 )

1872 x 850 2.20:1 = 16,777 ( continuous 21,763 )

1872 x 748 2.50:1 = Continuous

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1856 x 1044 16:9 = 702 ( 1,960 )

1856 x 790 2.35:1 = 19,192 approx 50 GB

1856 x 742 2.50:1 = 43,156 approx 100 GB

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1728 x 972 16:9 =15,578 ( continuous 21,763 )