Test of simultaneous burn of iso disc image to 2 SuperDrives conducted on 07 Mac Pro & 09 Mac Pro both equipped with dual SuperDrives. 2007 Mac Pro: http://farm4.static.flickr.com/3587/3372220611_91e359f851_o.png 2009 Mac Pro: http://farm4.static.flickr.com/3552/3372346588_a7c4c57df1_o.png Hardware Configurations: 1. Mac Pro 2007 8 core 3GHz, 16GB RAM, RAID 5 (4x750GB), Optiarc AD-7170A dual 16X SuperDrive 2. Mac Pro 2009 8 core 2.93GHz, 6GB RAM, 640GB HD, no RAID, HL GH41N dual 18X SuperDrive Software Configurations: Toast 10 Titanium v10.0.1 with 2 instances of application running per computer. RESULTS: SATA SuperDrive in Mac Pro 09 trounces PATA (IDE) SuperDrive in Mac Pro 07 by 6x DVD burn rate. MP 07 averaging 4x, MP 09 averaging 10x. If the disc image was larger the sustained rate on the MP 09 would have been been 13x. The iso image was of Windows 7 Build 7000, file size 2.44 GB.