PCI bus and BlackMagic devices

[karamasov]

Hi, I have an Intensity Pro + a Decklink Extreme 3D installed in my MacPro 1.1 2x2.6 DualCore. Can it be that the PCI bus doesn´t have enough power to capture HD streams via HDMI from both? I get lag, choppy pictures, frame drops, tearing, all sorts of trouble, when both cards are in use.

[Stickygreen]

A MacPro has a server MoBo, and they usually have lots of PCI bandwidth, but your machine is fairly old..

I have two HD capture devices in my windows machine, and I made sure to put them on separate PCI lanes, 1x each, and it works fine.

I wonder if your MoBo doesn't have enough capacity to share the bandwidth it has, do you know any specs of your MoBo? such as are your PCEe slots 2x

[HerrNieDa]

there are also Problems with BM sdi cards and new macpro's....
it really depends on the slots you use, may try another configuration/combination.
normally this is a osx problem.
does the Cards work in Final Cut or other supported Software?

[karamasov]

Thanks for the info! Will try to (learn about and) check MoBo and PCI lane config etc.

Cheers,

K