Maximum write speed on Canon 70D?

[A Furry Peanut]

I need this mainly for shooting video if that makes a difference. 
I'm asking this because I read that even if an SD card has over 9000 write speed, the camera might bottleneck it and I can't seem to find a definitive answer anywhere.

 

[basroil]

Get a Sandisk Extreme Pro card (http://www.bhphotovideo.com/c/product/824149-REG/SanDisk_SDSDXPA_064G_A75_Extreme_Pro_64GB_SDHC_SDXC.html) and stop worrying about it. The price difference between lower end cards and great ones isn't that large, so you might as well get something that you know will work for this camera and any future upgrades.