Note: I had the wrong codec, I didn't realize you had to use the Magix ACC/AVC render for the intel GPU to be used. It is slightly faster than the RX480 using this codec for 4K rendering and slightly slower for 1080P rendering. note the new times for the 4k render. I had some spare time today so I turned on the GPU in my i7700 and decided to test it against my RX480. I set the Intel GPU to the highest memory in setup for it (1 Gig) and then started Vegas 15. I do some cat videos for the 2K folks who are following the Feral Kittens we adopted from Canada. This is Panasonic 4k 2160 100mb base with titles, music, some grading on the six segments I used, some crop on a few of the segments, a high res still - generally the kind of stuff I do. video
Vegas shows the two GPUs (you have to close and restart when you change GPU's). AMD Ellesmere and Intel HD Graphics 630.
4K = 80 mbits 1920 = 28 mbits
File sizes for 4K: Magix ACC/AVC Size 438.78 Render 6:01 minutes Magix ACC Size 466.16 Render 6:21 minutes
1080P Hevc Size 124 Render 1:46 minutes Magix ACC Size 133.32 Render 1:34
The 4K render took 10:48 without Gpu
The Intel encoding does work but you have to use the Magix ACC/AVC encoding. Please disregard my next post where I suggest it does not work